Stock bbc head flow numbers


stock bbc head flow numbers '08. So that 170cc cylinder head that you've been looking at -with its . The exhaust port flows an amazing 335 cfm through only a 1. Shop performance parts online at JEGS High Performance Parts. Price for a set starts at $2,200. High performance cylinder head and billet intake manifold manufacturer for LS, HEMI, Small and Big Block Chevy platforms. /Lbs. Jun 08, 2021 · These types of heads will have 3 factory-drilled holes on the driver side head, and up to as many as 5 holes on the passenger side head. numbers are "I-056" for cast iron heads and "I-057" for aluminum heads. We carry cylinder heads from both Air Flow Research and TrickFlow Specialties. A mold of the D2VE-AA exhaust runner clearly shows why exhaust flow numbers are poor. 880″, Bare Castings World Products MERLIN series has earned a reputation as the performance industry standard for Big Block Chevy power. FLOTEK’s medium sized 290cc oval port cylinder head with 112 combustion chamber is recommended for moderate street or street/strip big block Chevys with displacements up to 509 cubic inches, operating at or below 6500 RPM. and 35-45 Hp! These heads have incredible flow numbers, yet retain very high air speed due to its smaller 375cc port volume. 15. 500" lift, which is frankly a completely arbitrary way of doing it. But those max flow numbers aren't the only significant competitive advantage the MBE’s Big 9 holds over every other Big Chief head out there. Designed from the ground up as a large cubic inch head with matching cast 4 intakes available the Brodix is capable of 900+ hp with a single 4 And well over 1,000 hp with Nitrous. 07”/1. 700 lift. INTERESTING LINK ON MAKING STOCK BBC OVAL PORT HEADS WORK . my pro stock heads flow 345 exh and 515 intake stock. Of course, the exhaust side is also important, and all the AFR heads match an excellent exhaust port with the intakes, which create a great opportunity to make power. 429 or 460 short block. 88 valves, mild port and blend lift intake 1 intake 2 exhaust . 200 deck heights. 300″ x 1. Slawko Racing Heads. BBC TWO PIECE REAR MAIN OIL SEALS 3. Oct 20, 2020 · EQ CYLINDER HEADS: FLOW NUMBERS EQ strictly by the numbers. MD3 88 MONTE CARLO NOSE. We can customize these specifications and components to your application, just give us a call at 812-576-2371. 2015. And alot more to think about when choosing a set than just the raw flow numbers in stock . from $4495. 603 Crate Motor Heads. 00 – $ 1,294. Oct 16, 2008 · Rich Halsey said: I am a huge fan of the old 990 heads. Constriction due to the massive valve guide boss hampers flow along the top of the runner. BBC Pro1 24° 335cc CNC Heads. These cylinder heads meet GM’s stringent quality standards and provide excellent service and durability not found in used cylinder heads. #3---Edelbrock Victor Cylinder Heads. Was: $689. Dart PRO1 24° 335cc CNC heads are professional quality competition cylinder heads. The cylinder heads have rectangular intake . The Superflow data set include numbers for effective flow area, flow coefficient and a number called “valve velocity”. to 122cc and added the larger valves 2. Mar 15, 2013 · Then you would be far better off with 049 or 781 heads if stock type oval ports are required or 088-990 style heads if rectangle port heads can be used. Machines called flow benches deliver a measurement of CFM (cubic . ProFiler. 400 265 257 200 . 880" 11/32" valve stems. 190IN. Zip. 600 304 281 237 if these numbers look realistic. This is all of our spread port and pro stock experience tossed into one cylinder head. 450-inch lift… you get the picture. It does not work on Mark IV engines. Improvements have been made in the water jackets to increase coolant flow and reduce head temperatures. 90-inch bore. 200"-160/97. Several varieties are available with different port and chamber options, including Edelbrock’s “pro-port” version, where a CNC porting program can be used to get flow numbers in excess of 370 cfm from the heads. 0/1. Edelbrock part #61019 Performer RPM complete cylinder head is designed for 1955-86 Small-Block Chevy applications that are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. Not recommended for racing. by createaaron » Sun Apr 30, 2017 7:26 pm. 26 bores for comparison. New Sniper Intake. 28. my pro stock heads flow 345 exh and 515 intake . I have flow sheets from some 781 heads I purchased, 2. Featuring a precision machined aircraft quality A355-T6 casting the CFE 15 degree head is available with a multitude of application specific CNC porting options engineered to maximize the power output of your combination. Our collection of aftermarket auto parts contains over 1 million parts & 800 automotive brands to choose from. 2008. 06%: 276/198 The flow numbers for Modern Cylinder Head were from a number of different sources, their Web Site updated Nov. Starting @ $1,150. It was basically a blank canvas as most heads of that class are. These stock numbers can be found online for most engines, and flow . '13 — and were converted from 10" to 28". Spring Options. Factory passenger car conn rods. (Most likely for pro stock or that era pro mod) So, there is no way to know what the chamber is but to measure it. 800 Lift) Tool Steel Retainers Fully CNC Ported Competition Valve Job 168CC Chamber Viton Seals Assembled and Ready to Bolt on! Priced Per Pair Please allow 3 weeks turnaround time for these . Closed Chamber Chevy BB Oval Port Iron Heads. Sep 24, 2015 · The flow numbers are exceptionally high for the runner sizes, which make these heads so versatile. AFR has released an all new 375 cc Magnum Series BBC head, the largest and highest flowing BBC product in its line-up with flow numbers that are closer to 18 degree Pro-stock style heads. Dart is one of the biggest head companies around, they have great quality control and flow great numbers. Brodix Pontiac. 6,514 likes · 6 talking about this · 93 were here. AFR is proud to announce our answer to that with our all new 385 cc Magnum, the largest and highest flowing BBC product in our line-up with flow numbers that . Used on 396ci, 402ci, 366ci truck, 427ci truck, and 454ci truck. Part Number: TFS-51410004-M61. So, if you are running a 224/224 cam, you will receive more milling than if you were to run our MS4 (239/242) cam. Chevrolet. Mar 21, 2006 · The 385 head is a 15 degree valve angle. Cylinder head casting numbers are usually located on top of one of the intake . 200" and . I used the closed chamber heads years ago back when they were plentiful on smaller 400 inch type BBC. $1,928. 810" Exhaust. SBC 200cc – View More Details. 300 intakes, & 1. Use these casting numbers to identify the heads you have. CFE offers a 15 degree small block Chevy head specifically designed for use in high horsepower drag racing applications. We Start Every Custom Build Of Our Cylinder Heads With Brand New Dart Castings And Specifically Selected Components - These Heads Are Never "Factory Assembled"! These Newest Design heads have made a great head even better! We've seen a 10-15HP improvement over the originals. B - February. Check out the flow numbers for our standard Raylar CNC heads and our special-order CNC Extreme cylinder heads using the link below. The LS3 heads hit the flow bench. Double Hump Heads. I was wanting to go with a Tunnel Ram on this engine, but do not want to break the engine apart since it runs so well. Bowtie Aluminum Signature Series fits MKIV Gen. Utilizing a . 84″ valve, we machined the valve seat to accept a 1. 14044861. To convert to gallons per hour, divide this figure by 5. " Sep 11, 2014 · In my opinion, they're a great alternative to re-working D0VE/D3VE iron heads, and performance is about on par or even a bit better when compression ratio and weight advantages are realized. 95. They are not a 427. Feb 20, 2019 · Big-Block Chevy Cylinder Head Casting Numbers 330864: ’68 through ’84 oval port, open chamber, 2. 250/1. 0L Mustang and TPI Camaro models. Exhaust. E-STREET ™ CYLINDER HEADS. This is our most powerfull standard bore spacing head for N . “That is because the more streetable camshafts will not have extremely high lift. Mar 29, 2017 · The factory-built motor dished out about 430 horsepower right out of the gate, and the cylinder heads play no small role in that impressive output. Dave Hughes. 030-over 454). for increased flow and velocity over standard big-block cylinder heads; . 1L cylinder head on the market. Chevy V8 SBC Block and Head Casting Numbers Chevy V8 BBC Block and Head Casting Numbers Chevy V8 "W" Motor 348-409 Casting Numbers Chevy V8 Crankshaft Casting Numbers Chevy V8 Crankshaft Journal Sizes Chevy V8 Bore and Stroke List Chevy V8 Notes SBC Crate Motors BBC Crate Motors SBC Cylinder Heads Holley Carb Information Holley Tuning Tips Essentially a 243 head with different casting numbers, the 799/243 heads are considered to be the top of the line, factory, cathedral-port offerings. All flow numbers for MORGO Systems come from them Updated Sept. Plug Option. Exhaust port exits are raised 3/4 inch and feature a distinctive vane, giving rise to the poplar nickname of the “W” port head. Over 7,500 RPM, 500+ cubic inches, great head for maximum effort comp or bracket cars. I assume cast pistons and two bolt mains. The first test was to compare the Bow Tie head to the Sportsman II with 2. I actually have the peanut port heads on my engine, my casting #'s are 346236 from 1976. Casting Number/Date for Big Block Iron Heads Available from Tracy Performance. If you buy heads that flow a gazillion cfm at . 6 psi is . Brodix’s PB 1600 is a conventional port head with a 16-degree valve angle, It’s 416cc port flows a whopping 515 cfm and is suited well for a big-inch . Therefore, the more work that is done for better flow, the more horse power there is to be had. In fact it was the founders Brian & Ken Murphy that designed and developed the first aftermarket air intake systems & performance throttle bodies for the then newly fuel injected 5. CNC cylinder head porting services . 700'', N/A, N/A. Chevy V8 SBC Block and Head Casting Numbers Chevy V8 BBC Block and Head Casting Numbers Chevy V8 "W" Motor 348-409 Casting Numbers Chevy V8 Crankshaft Casting Numbers Chevy V8 Crankshaft Journal Sizes Chevy V8 Bore and Stroke List Chevy V8 Notes SBC Crate Motors BBC Crate Motors SBC Cylinder Heads Holley Carb Information Holley Tuning Tips Pro Elite GM LS3 CNC-Port 6-Bolt Aluminum Cylinder Head - Assembled w/ . The F460 heads has a slightly filled floor for higher velocity lower runner volume. Stock BBC Fel-Pro 1635: Exhaust Gasket: Std BBC (match to header size) 4. Dec 11, 2006 · The flow numbers I posted where for a 2. They are very similar, but the 427's are an 18 degree. 20 to 1 range. SKU 54550-03STS. Texas Size Conventional Heads! These Heads Bend The Rules For Conventional Head Warfare Like No Other. 365/385 cc CNC 415-430/300 cfm. 6/25/2014. 500" lift the head will produce a better power curve than if the valve must be opened to . Valve Job and Surfacing. Stock Replacement Reman Cylinder Head. Each of the castings flow within 1% of each other and is CNC ported . In stock form, oval-port heads (Top) are capable of flowing enough . A cam and spring swap alone on stock heads is worth 100HP. 360cc. Factory Chevy Heads. Please choose a manufacturer. Jul 18, 2012 · The airflow data suggested that the stock iron heads would support over 650 hp, but on this 496, the heads managed to produce peak numbers of 630 hp at 6,600 rpm and 577 lb-ft of torque at 5,300 rpm. 12 Month/12,000 Mile Warranty. 78-87 Columbia, MO, USA. 76" STROKE used on '65-'90 Mark IV 366T, 396, 402, 427 or 427T . 59 in (40 mm) exhaust valves, and a 15 degree valve angle. The high riser casting should be ported for best results. of 38 degrees timing. 880" Valves (NO PORTING DONE YET)In Depth 620+ HP 454 Big Block Chevy Engine Build Sep 22, 2006 · I think it would be a waste of money to put $500 in porting in these heads and still be less than what a set of unported 781's or 049's would flow. Stud . 060, 4 bolt main, with stock crank and rods with flat top pistons and a set of ported 781's cut for 2. Kit includes: Dart Big Chief or Pro-FIler Intake, Dart Big Chief 14° & 18°, Big Duke 18° or Pro Filer 12° Heads, Jessel Shaft Rockers, Aluminum Sheet Metal Valve Covers, Cyl Head Stud Set, Wiseco / JE Pistons, Speed Pro Rings, Clevite Bearings, Custom Ground Camshaft (4/7 swap), Comp Cams Lifter Set, . Products 631 - 981 . The lower the lift at which that number is reached, the better the port design. this long block i bought in early 70s and still in the crate waiting for the right boat. Sorry if this has been discussed recently. 12. Pro-FilerP/N 174-29 24 Deg BBC: 290/--119-148/129 87. maybe i can find a way to export this. Either way the heads are to small for a BBC swinging a 4. 19 intake valves tend to be very heavy. Feb 23, 2008 · Here's a CamQuest comparison between stock port OEM 990's and out of the box Dart Pro 1 310 heads using my blower motor as the platform. 500 lift. Developed To Fit The Texas Pro Stock Association Rules, These 20° Castings Offer All Of The Reliability Of Conventional Design With The Power Of 14 - 18° Big Chief Style Heads. 25 valve, . These heads are stock unported, unpolished. 0s and 351Ws, plus stroker engine kits, cams, rocker arms, pistons, and other pieces of performance wonderfulness. Valves. 0's all day long. Redesigned water flow for greater thermal conductivity. V Gen. Hardened exhaust seats. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. May 01, 2006 · I'm trying to get an idea of what the flow #'s are for GM 049 BBC heads. 310-345 $ 2,695. 0 mm) intake valves, 1. Your talking BBC 781's right? We discussed this last week, . 65 lbs/hr/hp bsfc) = 325 lbs/hr fuel flow. Our goal is to offer the most powerful 23 degree cylinder head available today! It will be developed, all machining done in-house (including 5-axis cnc porting), and sold by Mullins Race Engines. The PowerPort 270 heads rocker shaft and runner areas have been enhanced to increase strength, and the oil holes for the rocker shafts were relocated to improve oiling. Feb 11, 2020 · The head didn't determine the flow, there was enough stock to cut about any shape you wanted into it. Posted Today, 12:50 AM Early Access. Mar 31, 2011 · Dart is about to release their new iron 8. large oval'd the intake port mouths and then did bowl work on them so that he got them from 201 up to 224 cc's, then added 2. A special thanks to Paul Shufelt for helping me with some of the numbers below. $2,495. The CJ heads can have both BBF or BBC exhaust flange. Aug 27, 2011 · Hey Guys, Im was lucky enough to find a 396 BBC in a Chevy truck that does not need rebuilding. The LS6 and the later LQ9-LQ4 heads used reshaped intake ports and D-shaped -- as opposed to oval-shaped -- exhaust ports for better flow: 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's. 400 206. The piston swap increased the static compression from pathetically low to a more reasonable 9. Cylinder Head Flow Data Table: AMC: Manufacturer /Part Number: Port/Vol . Chevrolet Performance service replacement cylinder heads are direct replacements on most 1990-and-later GM Big-Block 454-cubic-inch and 502-cubic-inch engines. World Products 030040 – Cylinder Head Cast Iron Chevy Big Block MERLIN 269cc Oval Port 269cc 119cc 26Degree 2. It should be pointed out that the 799 head featured a 2. Here is a 406 built in my shop in about 2006. 400"-274/181. 94-inch valves. 1 that made 525hp/560 lb/ft on 87 octane with ported truck heads, stock . The most common dimension include: 3 5/8" between the top 2 drivers side holes, 3 1/2" between the top 2 passenger side holes, and 4 3/16" between the top left corner and bottom right corner passenger side holes. RFD 18 Degree BRODIX. Details. 5 and 4. CNC machined guides and seats. 500 300 273 220 . 800 lift/28” Head Bolts/studs: Bolts . 00 . Cast at aircraft foundries using Alcoa A356 aluminum with a T-6 certified heat treat, a stainless steel shot blast finish, and machined surfaces. These cylinder heads are exclusively made by Mullins Race Engines. Ferrea # F5060. KMJ Performance Cylinder Heads - 1. This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros. Joined Feb 20, 2005. These heads are compatible with all OEM equipment and require a 3. . 5 stainless valves-. 28 Posts. Mar 10, 2016 · We mill each set of cylinder heads for a specific size camshaft. Improved flow design to resist cracking. Price: $8,750. 5 in stroke. It was a crate gm engine, we put a roller cam and a dominator on it with a single stage fogger system and in a 3300lb Camaro and it would run 8. Cylinder Head Flow Comparison "Header-Proof" Ceramic Spark Plugs Ceramic Spark Plug Wires - $340 Maxx 183 SBC(Sold in Pairs) Maxx 183 SBC. We open up the Intake Port enough to still use the same Intake Manifold and gain overall performance without making the Casting thin. 140" Intake and 1. 99. ·. Note: Milling head deck will affect flow numbers. It's also common for cylinder head companies to include port flow numbers. Feb 21, 2005 · Registered. Edelbrock E-Street Cylinder Heads for Big Block Chevy . 500″ raised 440 cc intake port with a 2. I do a lot of these heads. A - January. that was my intentions 5 years ago but just never got around to it . E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5,500 rpm range. This got me thinking that I should be able to pull right at 40hp less than Jims project with the stock heads. 59 exhaust valves Stock retainers, locks, and valve seals Prices include checking your valve guides for proper size, if your heads require guide replacement the cost is $9. Cylinder heads are normally date coded in the form of a letter for the month (see table below), two numbers for the day and a single number for the year. 1 heads are $654 a piece bare, 26 pairs are being machined, 16 are spoken for, orders are being taken. 19 intake 1. , Ford, Small Block, Each. BBC 360cc/121cc – View More Details. #2 · Aug 5, 2007. there-- cylinder head flow numbers/valve dimensions etc plus fuel injectors info too. 88 valve 781's that made 560 hp and 560 tq with an hyd roller cam in the high. 16%: 213/162 76. So, to get an idea of what constituted "good" flow numbers versus "bad" flow numbers, we started compiling this chart. 050, . Raylar big block Chevy / GMC cylinder heads out flow every 8. 2014. 50 per guide. 400 and. Jun 06, 2003 · Both data sets are at 28” water, with no pipe on the exhaust ports. Chevy Open Aluminum Outlaw Heads. Therefore, a fuel pump capable of providing a minimum fuel flow of 55. Bow-Tie Heads. 3872702. The 375 Sniper-X is a “DIRECT Replacement” for your BBC race engine. For example, a stock production 049 oval port big-block iron head with stock valves starts life with a 253cc intake port and flows 232 cfm at 0. Flow numbers are in cfm. BBC Heads need to know Oct 20, 2020 · EQ CYLINDER HEADS: FLOW NUMBERS EQ strictly by the numbers. . 600 exhaust valves (Chart A). Cylinder Head, Twisted Wedge® 170, Fast As Cast®, Assy, 61cc Chamber, 1. rect . 00. What they don't go into detail about is the port work, intake, camshaft profile needed to get into the 700+ range. 3" Bore Spacing. Choose an option 64 CC 72 CC. Exhaust Head Bolts: 1” longer than stock (4) ea. Stock 1. All flow-bench tests were done at 28 inches of water at consistent barometric pressure. In response to greg_moreira. hit the net and buy a book called how to hot rod big block chevys, printed in 70s and in the back will list all . 880 inches. Suckers were grunt motor from hell heads on a mild 502. The Save $15 Off $299, $25 Off $499, $50 Off $799, $100 Off $1,599 Orders Dart BBC Pro1 335/355 CNC Cylinder Heads. First up, we needed a suitable test motor. Chevy V8 BBC Block and Head Casting Numbers Chevy V8 "W" Motor . 602 Crate Motor Heads. Test head: ‘450 casting number Chevy 305 head with “UnderCover Porting”. The one dimension that had a little gravity is the intake valve axis to cylinder bore axis was about 9 degrees as designed. BES / GM LS7 Heads - Flow Numbers. Could have been made a couple degrees up or down from . Approximate RPM Range*. 1 GEN 7 BBC heads. edelbrock performer intake with holley 750 vac secondary carb. Range C (Hydraulic: 210° - 225° Effective . to stock heads from the outside but have taller bolt provisions. 72-inch valves Valve Intake Exhaust Lift . Lq-4 Engine Family. 125 bore LPE CNC L92 LS3 Flow Specs Intake valve lift / Exhaust valve lift Edelbrock and Robert Pond Motorsports both make excellent aluminum heads, patterned after the 427 medium riser heads. aren't 049's the peanut ports? ZAG said: if anybody has 781 or 049 bbc heads flow charts please post them. Flow, Exhaust: 303 cfm @. 19 1. The Dart iron 8. We figure they'll end up around 117/118 after porting/polishing. You can flow more "out of the box" with any of these castings. Nov 19, 2020 · The first release — P/N: 030630CNC — is a 26-degree BBC head, with a 365cc CNC intake runner, 128cc CNC-profiled combustion chamber, along with 2. Tested on a flow bench, the 799 head offered right at 249 cfm at . 88 exhaust May 01, 2010 · Its Head Hunter and BB-4 and BB-5 series are conventional style heads that both offer huge flow numbers and advanced features such as rolled valve angles and raised intake ports (BB series). 19 intake, 1. With RightCast 320cc and 345cc intake runners, you can expect solid gains in air/fuel mixture combustion charges. 5-Axis CNC Ported for 2. Based on Pro-Stock technology, the Hitman offers an out-of-the-box port design that allows any racer or engine builder to have an efficient, high velocity airflow cylinder head within their grasp. June 22 at 7:07 AM ·. I am referencing the site below. BBC. D - April. Recommended spring pressure 105 lbs. 0's without nitrous. The casting number is located on the right of the head, between the second set of rocker studs. That's where the oval port heads really stand out. 84″ valve. In testing on engines ranging from 540-632cid, the Sniper-X has shown gains of 25-35 Ft. 13. I haven't been around in a while. Sale: $600. The flow numbers for the TBI 454 head are: GM 236 Iron Peanut Oval Port 2. 650" lift on stock 440 Ports. 377cc Head Hunter CNC 469/308 cfm. Stock and ported?? - AS fall is here I need to refresh heads this winter since . this is from the 4th paragraph, it only states at. This head is designed for Pro Stock and similar all-out racing engines which range in displacement from 450 to 600 cubic inches. The charts below show the difference between stock flow numbers as well as . The LS6 powered the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. The heads are the Oval port 3933148 (122cc, open champer heads . for valve open. We applied the airflow technology developed in our championship winning Pro . 600" lift. The peanut-port heads received a light surface and performance valve job, but were not ported in any way. Replaces casting numbers: 10141279, 12560241. C/R from 9. 87 lbs/gal = 55. 250 duration @. Intake. AS-CAST PORTED Feb 23, 2008 · Heads: Stock Vortec Cam: Stock hyd roller, 196/210 at 0. 375 Bore Head Gaskets: Cometic C5329-XXX (xxx = thickness) 4. 750" lift. One of the most accurate, best flowing out-of-the-box cylinder heads is now available. the head that suceeded the 915 was the 906 and all the heads there after were open chamber heads. 880EX. CHEVY BIG BLOCK V-8 Crankshaft Casting Numbers. Deck. Trick Flow has cemented its reputation with more go-fast stuff—Twisted Wedge and R-Series heads for small Chevy, heads and intakes for 429/460 big block Fords, EFI intake manifolds and for 5. For the unportred flow numbers, I used somewhat of an average between the 156 and 236 peanut port, and the posted numbers for the 049 heads. Where you can gain substantially more power is by concentrating on the exhaust side of the head. After market cylinder heads usually flow more air, so naturally another option would be to buy better cylinder heads to start with, then mira-cut and pocket port them for . This article from Chevy High Performance in June '08 documents 4 days on the dyno with 7 different Big Block Chevy cylinder heads to see who comes out top of the pack. Air Flow Research An As Cast head that is just as efficient as competition's . Replacement head for P/N 14011076. Aluminum fits MKIV "C-port" also sold as a "solid" head. They feature partially CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. 400-inch and 250 cfm at 0. Ran 10. 06/1. I understand from research that the 516 heads and the 67 only 915 heads are the only closed chamber heads that were produced. Flow Charts. 115cc. Dart made an excellent platform for RFD to build the most powerfull spread port head available. AFR BBC Enforcer Cylinder Head Flowsheet . 2009. 1 heads with porting as used for the HP3 engines. The PB 1800 and PB 1801 were the original designs in this legendary series. 20 to 4. 8:1 CR as delivered by the flat-top pistons and basic-ported Dart aluminum heads, this solid-roller cam street-driver produced 558 hp at 5,900 rpm, and 549 ft-lbs at 4,300 rpm. Mar 21, 2010 · BBC 336781 Heads? Building a 468, going in an 84 Chevy Pickup, 454, bored . Lift is in inches. Ideal for a truck or full size car application. Select a Sub-Category. 240 to low. 4 gals/hr at a pressure of 21. Trick Flow Specialties TFS-51410004-M61 - Trick Flow® Twisted Wedge® 170 Cylinder Heads for Small Block Ford. These heads will really respond to higher compression ratios, and are ideally suited for hot street/strip cars. 500-inch valve lifts. And fwiw, the pp heads range from 198 to maybe 230 cc's! The late John L. If maximum flow is reached at . 474” / . RECTANGULAR PORT - Valve size 2. Shop Now. I put some work into them like opened up the intake port vol. instead simply buying a cylinder head that has the highest flow numbers, . Identifying an OEM LS7 head from the OE LS3, LS9 and L92 head is fairly easy . For example: Lets take a head that flows a maximum of 300CFM. 800 valve. AFR vs Brodix vs Dart vs Edelbrock vs TFS vs RHS vs World Products. BBC Head Casting Numbers Edelbrock 614469 Pro Port DR-23 BBC Cylinder Head, . 84-96. Part Number EQ-CH454C. non ported D0VE-C iron heads. The Edelbrock #60547 Performer RPM Bare NHRA Stock/Super Stock Rectangle Port . Sep 23, 2012 · One BBC head costs the same as a PAIR of SBC heads. World identifies Windsor head casting numbers as "I-051" for cast-iron models and "I-034 for aluminum models. and 1. Best Match Lowest Price Highest Price List A-Z List Z-A Newest Oldest. Sep 01, 2009 · Air Flow Research. Finally I need help filling in some of the blank spaces in the charts. The Hitman BBC 12° Spread Port Head takes the guess work out of trying to find the right cylinder head for the most power. 900 Stainless Valves PAC Locks PAC Roller Springs (. If you are around town driving and staying below 6500 rpm max, I think a good 781 casting head would do great. , the flow numbers are as follows: . If GM thought a 320cc head was fine on a 427CID BBC, then why don't . This chart is a collection of published flow numbers for different types of cylinder heads. I know it is open chamber, I assume large oval ports. Please call 812-576-2371 for details ask for Preston. BRODIX BRX 20 DEGREE BB/CHEV RACING HEADS. 9's to 9. Valve sizes are 2. The 5. I have a friend with a 9. 325 lbs/hr / 5. I wanted a relatively stock appearing big block that runs 10s on . It is a big-valve service replacement head with 325-cc rectangular intake ports, 118-cc chambers, and 2. Stock axle ratio 3. Just did four pairs of 781's last month. 88 valve with under cut stems, bowl blend,gasket match and some combustion chamber work that I did. PCE . Price: $4,250 Price is for complete set. Capable of flowing 367 CFM at 0. Email. SBC 180cc – View More Details. One thing most people don't realize is that they require a CJ flange header/manifold, and it's raised about . Recommended for street, towing, or street/strip engines with displacements up to 468 cubic inches, operating up to . Standard features are A-356 virgin aluminum alloy, phosphorous bronze valve guides, valve seats for use with unleaded fuel, ends milled and drilled for accessories, and a straight spark plug angle. BBC 360cc/133cc – View More Details. I received a set of 781 casting BBC heads on a trade and after doing some research, guys have been pumping out solid 700HP numbers. BIG BIG difference between a pair of stock 990's with a 2. Gen II LT1 angle plug aluminum reverse flow cooling 175/68cc ports . Air flow facts on 305 heads. If you have any of this missing info or some of this is wrong please e-mail me. Olds/Chevy DRCE 2 Pro Stock . 10. I did not take measurements of the stock heads, but here is a . 0 to 1 to 9. Cylinder Heads Featured Products. Speedmaster has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. We have three sets of Dart 215 cc/49cc straight plug platinum iron cylinder heads in stock. 7L LS6 is the most powerful Gen. 18/1. He had his heads flow tested and they flowed 290 cfm @. High Velocity Heads. Aluminum performance cylinder head. It is an improved version of the LS1 produced for the 2001 Z06 Corvette. 500-inch valve lift on the intake side. 3 angle valve finish. 87. Sep 28, 2014 · The heads that I have on the engine now are 516 heads. 600″ of lift; tested on Super Flow Bench 1020. BBC Heads 820 vs 292 Stock and Super Stock Tech. Higher-performance versions required larger ports that flow more air at . Oct 27, 2005 · I also ran merlin "vr" grumpy jenkins heads until this year with 310 or 315cc intake runners. To demonstrate the difference in exhaust runner shape and contour between the Edelbrock head and the factory 429 head we took silicone molds of both heads. Dual plane air gap and a 770 street avenger. Out of Stock. All of this combined to dramatically increase airflow over the stock heads, with peak flow checking in at 277 cfm vs just 157 cfm for the stock heads. For what ever you use make sure the threads in the block are clean. Trick Flow PowerPort® 270 heads for big block Mopar are far better than stock and other aftermarket aluminum heads for several reasons. 2003. 5 to 1 or less. 600-inch lift while maintaining excellent flow numbers even at the mid-lift positions. 25"/1. Cylinder Head Requirements Request More Info: Intake Manifold: Cast single dominator or tunnel ram manifolds are available for 9. 2018. Technically, there is no winner or loser. A rocker arm layout modeled after MBE’s Pro Stock systems creates the most rigid, efficient Big Chief style valve train available. 1967 C heads had this number; 68-9's did not. 14081045. I want to know if the TR will operate fine on just a basic 396. Although flow numbers are not he most important aspect to a great cylinder head it is important. Will work with stock or slightly modified engine, stock automatic or manual transmission. 650 Holly Run on ZZ4 short block May 02, 2017 · 781 casting BBC heads. Report. (Sold in Pairs) $ 791. 105cc. Combustion Chamber Size. If it's an A, B, or C head, look for the engine unit number/ID code as detailed in the Blocks section under Big Block Unit Numbers. How our heads stack up. We focused on proper Cross-Sectional Area (CSA) and quality airflow. 300 217 208 175 . When I talk about good flow numbers, I mean numbers that are at least . The casting number is 12563934 and it has 7/16-inch accessory holes. They are available for popular V8 engines. “Flow numbers matter, as you need to know how much air will be able . 3. Exhaust Lifters: Qty 8 @ on-center: Valve Cover: Requires a standard Big Chief valve cover and valve cover gasket. for valve on seat; 265 lbs. Windsor Jr. Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O . 94/1. BB CONVERSION KITS - BIG CHIEF / BIG DUKE / PRO-FILER. to 244cc and the exh. NEW 444cc INTAKE PORTFLOWS 495CFMs OUT OF BOX. Flow Numbers Average 300 cfm at . It all depends on the application. cole ss said: I have a 1990 stock 454 hardin marine engine, 330 HP. Bowtie Aluminum MkIV "raw" casting of "861" MKIV 1st design. The 385 AFR head is a nice head flows nice in the exhaust side super important for a bbc. 500"-302/216. 63 Bore Head Gaskets: Cometic C5331-XXX (xxx = thickness) or Fel-Pro 1057: Valve Covers: Standard BBC Bolt Pattern Pro-Filer PN 191: Rockers: BES / BBC Brodix Head Hunters - Stainless Valves - Flow Numbers Intake: Exhaust. Jul 13, 2006 · 3/4 and 1 ton as well as 1990 454SS 80 lb/hr injectors (9-13 psi low pressure fuel system) TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm. In the As Cast form this 440 head has many CFM choke points. 54 Bore Head Gaskets: Cometic C5330-XXX (xxx = thickness) or Fel-Pro 1017: 4. The LS7 cylinder head is unique, with identification number 8452. X- Clearance Items. Vortec Bow-Tie Heads. Factory dura spark distributor 14 initial and 24 centrifugal for a total. US $1,232. 96-up. 500" lift. 880-inch exhaust valves. Flow numbers on the 220cc AFR head are on the order of over 280 cfm at 0. Just like the smaller truck heads, the 215s come fully assembled for $2,340. 800 exhaust valves, Guides & seats included More Info » Pontiac Cast Iron Cylinder Heads flow 460cc intake runners which are raised and relocated to enhance airflow. 72” valves with stock (rather poor) valve job and 3/8” valve stems. Shaft Rocker System (required) Jesel: KPS-23097: T&D: 3036: Head Stud Part . 120 thick intake gasket. Here you go jackbn, if it's not here it don't exist, stock, ported, big valevs little valves, you will need the casting #'s not the 291 #. 7. 2020. 06- and 1. Build to Order. Combo #1. View. As you can see by the flow numbers, these new CNC-ported heads are a significant improvement over the previous big-dog Merlin cast-iron cylinder head . The Vortec heads are much like other stock small-block heads in . The 990's seem to do a good job of providing flow and delivering HP/TQ with this build - 671 blower @ 8psi, 427 ci, 8:1 forged, hydraulic roller [email protected] 300 from the stock location. Jan 18, 2018 · “Flow numbers are meaningful in a street engine, but the low-lift flow numbers will be more meaningful, ” said McInnis. General Q & A - Merlin 345 Grumpy Jenkins flow numbers. 200-. 88 exhaust. 3 small block engine as it came from the factory. It's my opinion that you'd be best off finding a pair of matching stock Vortec heads, grind the sharp points off the swirl inducers, give them a valve job, install new springs, and put a cam in it. We stock all of our cylinder heads with various mill numbers, so we will most likely have multiple sets of heads in stock that will match your setup! Stage V Engineering replacement HEMI Heads, Fully CNC Ported and Assembled With Roller Springs Stage V Engineering HEMI Replacement Castings 2. Choose an option Bare Hydraulic Flat Tap Hydraulic Roller Solid Roller Solid Roller Titanium. Jan 04, 2018 · LS6 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. 320cc. 200 126. The Teflon-coated composition-style Victor VR2000-series head gasket (PN 3852) is included in full set FS3852. 88" valves. But if you plan on shifting it at 7000 plus than the 990 head is pretty good. 510” LIFT Carb. Z - Wanted Parts. 75 to 1. 190" / 1. Air Flow Enhancers; . We are selling these CNC ported, with or without parts. Maximum performance, bracket racing, heads up and super classes. Professional cylinder head shop with 5-axis CNC porting and programming capabilities offering competition port programs and. 5:1 468 with cleaned up 2. BBC 290cc – View More Details. Air flow with 1. 120" thick-wall pushrods. V8 C ylinder Head Casting Month Codes. Priced Per Pair. Sep 11, 2014 · In my opinion, they're a great alternative to re-working D0VE/D3VE iron heads, and performance is about on par or even a bit better when compression ratio and weight advantages are realized. Boat Engines. For Head Studs or aftermarket bolts CHECK YOUR INSTRUCTIONS, BBC studs are available in a ton of different styles depending on heads and stud diameter (7/16" and 1/2"). For every 1. 25/1. Chevrolet Performance service replacement cylinder heads are direct replacements on most 1990-and-later Big-Block 454-cubic-inch and 502-cubic-inch engines. check more around on the net, and check again. The current “bad-boy” Bowtie race head is PN 12363425 (casting number 14044861), a bare head with 380-cc intakes and valve seats for 2. 454SS (91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque. 750-inch lift and your cam only has . 612 lift, 110 LSA. That engine took 8 years of Halsey abuse and is still . Without checking any dimensions, valve seat location, etc. The team has shared all the finest moments in the numerous accolades for its people, its products, and its approach. 46" Sp. 1. So they have been fully done by someone. This is a "positive" size for us. Mills - Flat or angle mills could affect flow numbers and might require a thicker intake gasket. There shortcoming is they have a crappy 62-65 % intake to exhaust ratio. The first has to do with port shape. The LS3, LS9 and L92 all use essentially the same cylinder head foundation, featuring a four-digit identification number (top of head just outside the valve cover rail) 5364. 500 212. 600" Z-28 Spring-Stock Appearing Screw in Stud. These stock numbers can be found online for most engines, and flow numbers can be compared directly if valve sizes are the same. 080 Chome Moly Pushrods, Complete Gasket Set . ATK HP2CM3 CHEV 350 92-97 LT-1 HEAD The 18° Pro Stock style cylinder heads from BRODIX are the Big Dukes. Intake Runner Volume. Aug 04, 2007 · 11,208 Posts. Latest flow is over 360cfm @ . Additional power would be possible with porting, as the stock head flow was certainly limiting power of our 461 (. May 18, 2012 · This meant gathering a number of different oval-port cylinder heads and putting them through their paces, both on the flow bench and the engine dyno. We have no desire to sell our cylinder heads based on silly flow numbers that any company or individual . 600 Lift. Example: (500 boosted hp) x (. 3:1. No Reviews . Full CNC Porting. Chevrolet Big Block Cylinder Head Casting Numbers. We . 700" lift or more to get the flow. while not very impressive ,by todays big block performance cylinder head flow numbers, . 100"-66/29. 4. The stock 2. Apr 12, 2019 · This number is a representative figure of how a given head will perform on an engine by simulating how much air it can flow. #6 · Nov 4, 2008. Picking up some 40-50 cfm over stock. 4 CFM gain in cylinder head flow, there is a 1 horse power gain. Updated as of 10/20/2020 DYNO RESULTS – CAM . Wish List Compare. 2019. 2016. 020 intake and 1. 18. We spend part of every week doing R&D on head porting and design all year long. *Note that this is an approximate RPM range guideline only –there are too many individual engine variables such as: rod length and bore/stroke ratio, rotating assembly weight, valvetrain weight, induction, camshaft characteristics . So, if your C head has a stamped ID like V2023456G in figures about ¼" tall, that'd be from a 1967 400-4V, possibly a W-30. More Laps - Same Power - Less Money - A Winning Combination! BB Spread Port Conversion Kits 555-632. After the head was flow tested with the 1. Sep 04, 2011 · Those heads are about 320cc intake ports and can handle up to about 725-750 hp. The F460 have just the BBC exhaust like an A460 head. Machined for 2. Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match AFR heads. Also, the 385s were only available in a raw casting. This is for stock 2. Bowtie Aluminum MkIV "raised runners" 1st design. ( 15 ) Estimated Ship Date: 11/30/2021 (if ordered today) Free Shipping. The LS3’s 319-T5 aluminum alloy cylinder heads use 2. PCE Chevy BBC 454 Hyd FT Cylinder Head Top End Engine Combo Kit. 30. 25 point quality check on every head. 2005. By studying the flow data between these two heads you'll see that the factory 429 head flows relatively well on the intake side. ≈ 3500-7300+. Pro Action™ BBC 24° (360cc Intake Runner/119cc Chamber) Mechanical/Solid Roller Assembled Cylinder Head. (HP3 still born 8. BBC 320cc – View More Details. The PB 1802 is a cast ported version of the PB 1800 capable of flowing over 480 cfm. I think it could possibly do better than that due to the intake Jim used I think restricted his engines potential. 500-565+. 110-cc exhaust ports. SKU 11012-03. /Inconel Exh. With quality assurance as our main focus, this . 310 bore, the stock iron heads checked in with peak intake flow numbers of 335 cfm. The Performer RPM head flowed an average of 229 cfm between the same lift range. Our ports flow the appropriate amount of air designed for the application. casting number 2406516-10. 11. Thanks, Sum. The flow numbers and cross section area are good on theses heads. Nov 30, 2008 · I would do more checking around on the numbers, ls7 heads are 627 2990 G M 1T block 14015445. 5. When larger engines (454 to 540ci) require added flow, choose the Merlin Rectangle Port cylinder heads. The Pontiac Super Duty Pro Stock cylinder head (PN 10045427) featured intake ports that were spread apart to even out the flow differential inherent in the original Chevrolet siamesed port design, and the shallow valve angles required substantially raised intake ports to straighten the airflow path from the port entrance to the valve seat. 900″ valve. E - May. 8. Good choice for light towing. Post. I have used rec port open chamber heads on a bunch of 460 type BBC engines. 468-500+. The Brodix 18" is the most bad azz 18º head available for big inch small blocks. i've got the flow coefficient, but without the valve flow area, it's useless. Oct 04, 2005 · A stock set of 781/049's with the stock valve size is will flow around 265 cfm @. 350-inch intake and 1. Tested on the flow bench with a 4. from $3999. Chevrolet Performance DRCE (Drag Racing Competition Engine) Pro Stock cylinder heads are the choice of professional drag racing champions. 800 or 10. F - June. heads are also marked with "J/R. When it comes to performance, Air Flow Research has always been at the top of the list. * Must Supply Your Own Cores *. it is a stock exit-location port, the exhaust-flow numbers are not as . If you go on a search for chevy headflow you should be able to find the superchevy website that has most the heads out there shown with flow #s and intake to exhaust ratios,Smitty head gaskets retained by ARP 1/2-inch studs (ARP PN 135-4007). Blue Thunder cylinder heads are pressure checked to 60psi. My head casting number is 14092360. 600 213. Aluminum Head #12562317 Or 12572035. 050 Exhaust: Hooker 1-3/4, 3-inch collectors, 18-inch extensions, no mufflers Dyno: Superflow 902 engine dyno at Westech Performance Peak power numbers: 350hp @ 5,000 rpm, 450 lb-ft @ 3,800 rpm (I need to double-check the rpm points) This will give your fuel flow requirement in 1bs/hr. Part 12 - GM 781 Cylinder Head Flow Bench Testing -In Depth Performance Engine Build620+ Horse Power Street/Strip Pump Gas 454 Big Block Chevy Here’s a cast-iron bare replacement head (PN 12562925) for Gen V and VI only. 165 in (55. 1" longer head bolts needed on four bottom exhaust bolt holes. The BEST head for Top Sportsman , Top Dragster, Truck & Tractor pull or all out Marine. Below are flow numbers for our standard Raylar CNC heads and our special-order CNC Extreme cylinder heads. Mar 16, 2017 · The flow numbers suggested the Edelbrock heads would support more than 530 hp on a wilder application, but they performed well on our mild 331, adding 85 hp. 315-cc rectangular intake ports. I ran Dart 325cc heads on my 509 and they were a little small on my 540. 400 intake valve, this head flows an unheard of 507 cfm. 3856206. ProMAXX Performance has designed a complete new line of performance heads that meet or exceed the big names in the industry. BBC 315cc – View More Details. 19/1. Open Chamber Heads. #2 · Feb 21, 2005. The Vortec heads offer great intake port flow despite the rather small 1. 1L cylinder head in both 4. Even in unmodified and neglected form, the stock casting flowed an average of 216 cfm between . you ported will support about 480hp/520tq with those flow numbers and . Does anybody have a DD2000 flow file? That would be great. The Dart 275 heads not only have strong intake-port flow numbers, . 300"-226/152. 72-inch valves. Edelbrocks Newest Offering for Chryslers. Much more variation than stock small block heads. For example, C259 indicates a date of March 25, 1969. VI "raised runners" 2nd design. I had a 454 with bone stock 990's . AFR’s 265cc “As Cast” heads are the cost effective performance choice over re-worked factory heads. front tab T0118 XCH. 700 lift on the intake and 191 cfm on the exhaust. 88 valves. I never had the ability to flow any of these but I could run faster with the heads I ported and installed bigger valves in. BRODIX Big Block Chev 20 Degree Racing Heads Flow 495 out of the box. Minimum of 4 bore size recommended flow numbers are measured on 4. The numbers were generated on Creative Flow Management's Audie Technology flow bench at 28 inches of water. The RHS BBC Pro Action and Pro Elite BBC heads utilize stock rocker arms, . For example, a Dart 24-degree, 308cc rectangle port Iron Eagle big-block head can deliver 325 cfm of air at 0. 300 173. 2. most of the time there not right. 4 gals/hr fuel flow. Angle mills might require a . 604 Crate Motor Heads. The BBK brand has been synonymous with bolt on performance for the modern muscle car since its beginning in 1988. Sort. ≈ 4000-7500+. With a 10. Pretty new to the BBC stuff. When using the Max Wedge port heads flow is up to 379cfm @ . All of our designed cast aluminum cylinder heads are hipped (hot isostatic pressing) This process forces trapped gasses, voids, porosity to the surface making the complete head to be more dense, and up to 20% stronger. 00 US $1,760. That's hardly impressive . There are three basic differences between the LS1 and LS6 heads. This is excellent information to prove that oval port heads are the best choice for "milder" applications that are under 500 CI and have a max RPM in the 6500 range. Apr 06, 2018 · Your question relates to porting the Vortec heads to improve the flow, which is a great idea. accueil engine code. These heads feature 210 cc intake ports and flow 287 cfm while utilizing all standard components. Edelbrock 60547 - Edelbrock Performer RPM Bare NHRA Stock/Super Stock Cylinder Heads Cylinder Head, NHRA Legal, Aluminum, Bare, 118cc Chamber, 315cc Intake Runner, Chevy, Big Block, Each Part Number: EDL-60547 May 23, 2016 · These numbers also show the Edelbrock manifold produces far better numbers at far higher RPM than Edelbrock claim. All heads CJ and F460 come with stock factory CJ valve angles and valve spacing. I just wanted to show you that the CNC porting is not 100% perfect. Vortec Heads. Racing Head Service offers bare or assembled Pro Action BBC 24-degree cylinder heads with either 320cc or 360cc intake runners; both feature 119cc combustion chambers. There are a lot of people out there that believe that if their heads are CNC ported every runner is going to flow the EXACT CFM's. Nov 03, 2008 · 3,895 Posts. 88-inch valves. C - March. So, low and mid lift flow numbers are VERY important. 200 148 . To allow for the newly designed 95 cc combustion chamber, the intake valve angle of this head has been rolled to 20 degrees. Remember that velocity produces low rpm torque, and flow produces high rpm horsepower. Compression 9. Bare 356-T6 Aluminum, 400+ cfm flow out of box, 50cc combustion chamber, 310cc intake port, Will accept up to 2. Part 20GM 781 Cylinder Head Flow Test with Bigger 2. PROMAXX Performance Products specializes in all types of automotive cylinder head for any budget, carrying Performance cylinder heads, diesel cylinder heads and stock replacement cylinder heads. AFR 180cc -- AFR 190cc -- AFR Race 210cc -- AFR 205cc LS1 Mongoose Street Head -- AFR 205cc LS1 . Dec 15, 2015 · The port volume will depend on the size of the valve and length of the port, but the stock exhaust port volume and valve size can be used as a reference point for comparing aftermarket heads to stock heads. We’ve included the Dart Iron Eagle 8. CHEVY SMALL . 12 24 48 50 60 96. 55 valve combination. Flow numbers on the 8. E-brock's 2-O fits them. 23. Edelbrock E-Street Aluminum Cylinder Heads offer American-made quality and affordable performance. 700" Lift Springs & Stainless Int. 250"/1. Crankshaft Coalition Wiki -- hot rod tech articles Apr 07, 2015 · In my opinion all the BBC heads have potential, but there are some that have a whole lot more. 050 range. SBC 220cc – View More Details. They are sorted by max intake flow at 0. I would really like to get the flow #'s at . BBC Shootout. You will notice that the charts are a little more detailed at low and high lift, which are generally considered most critical. I am trying to find out information on this motor, such as compression ratio. AFR recommends the use of . 600"-318/249. Aug 07, 2014 · A Look at Some OEM Heads. stock bbc head flow numbers