Big Block Chevy Heads Casting Numbers

GM LS6 Pistons and 7/16" Dimpled rods. on the passanger side of the front of the block a number 6696 is there. Block, Crankshaft, and Cylinder Head CASTING NUMBERS. 88 inch exhaust valves. The prefix portion of the ID code tells you the engine assembly plant code, and the engine's assembly date (for example, 0701 = July 1st…. Remanufactured Engines Chevy Big Block. Now, when the question “what heads are these, and will they work for me?” arises while walking around a swap meet, you can at least know what is sitting on the ground or table in front of you. BluePrint Engines 496 c. 5:1 compression would be plenty to dial up a nice street combo in a 396but even that amount of compression is harder to attain with the big chambers of those heads on a small motor. Fifty-five years of manufacturing have left us with an endless number of different cylinder heads for the SBC engines. Number of bids. If you see (or don't see) anything that needs corrected or added, please e-mail me. Chevy-Big Block; BBC 336781 Heads? on the port that about it. With the devolopment of these heads it made almost all other stock factory head obsolete. be/q7unh0qkxey. 348-409 Chevrolet Cylinder Heads. These bore sizes along with a stroke of 4. Big Block Chevy Cylinder Heads Open vs. block c/n 10243880 would be called an "880" block. I have a chevy 350 engine with a casting code of 8870010 and suffix code Ko21o cmj can you tell me what year this - Chevrolet 350 ENGINE 5. Big Block Chevy Suffix Codes: CTH - IJ. BBC Head Casting Numbers. A wide variety of classified ads Buy, rent, sell and find anything - chevy caprice bumpers listings. 19 intake, 1. With stock heads this engine makes an honest 440 horsepower and 475 torque, and is an ideal replacement or upgrade for your old big block. Big Block Heads Home; Casting Number/Date for Big Block Iron Heads Available from Tracy Performance. Chevy-Big Block; BBC 336781 Heads? on the port that about it. We have compiled one of the most extensive lists of block, crankshaft, and cylinder head casting numbers available on the internet. do NOT contact me with unsolicited services or offers. found out too late that due to the shape of the combustion chamber (next to the exhaust valve) that the gasket generally used for the engines (such as fel-pro 1047) protrudes into the combustion chamber. See pictures. 02 valve heads would be a "186" casting numbered head common to the 69 Z/28 302's' some other applications had smaller valves as HK1837 noted. With the valve covers and intake manifold on 99% of BBC heads look the same. Dart Machinery, LTD. 5:1 compression ratio running on E85. 00 6h500-casting Number Yamaha Carburetor Set Of 3 50 Hp. Casting number 156, 454/502 heads. I'm putting a 360 in my scamp come spring and am wondering about these heads. Small Block Casting Numbers. Big Block Performance Heads Tips Block Exhaust Crossover Install cap plugs (2 per head) to block off the crossover passages. The CE060689 is a Chevy Replacement number and I believe is was from theTonwanda plant. This is another quick way to ID a core as a 425 (head number 423) when junkyard hunting, etc. I have futher: head casting number 10141279, I think these are oval port closed chamber (100cc) vortec 7400 heads. If a vehicle was ordered with as "high-performance" with a big block, that engine received rectangular-port heads. Cylinder heads. 10% off on all gasket sets with the purchase of a cylinder head. Casting # CID Year Copied from Chevrolet Big Block Parts Interchange Manual Magazine. $396 OBO Or Best Offer!. If the serial number and/or model decals are missing, the Marine Engines code will help to determine the engine model. Chevy Forums FREE technical assistance for your restoration and repair. Chevrolet Big Block Cylinder Head Casting Numbers. Take a look at the flow bench numbers of this big-block cylinder head flow. These heads were used by GM on 1966 396/325HP, 396/360HP, and 427/390HP engines. BBB Accredited Business. On the underside of the head on an intake runner, and under the valve cover on an intake runner. 14015445 Casting Number On A 454 Chevy. 1999 -’04 – 5. on the passanger side of the front of the block a number 6696 is there. 00 Had these built for my boat but found a set of aluminum heads and need to sell these I will deleiver up to 100 miles. The W-series design placed the spark plugs at a straight-in position. A letter indicates a big block, a number indicates a small block. RHS is the leading developer of high performance cylinder heads, engine blocks, intake manifolds and related components for street performance and race engines. Find Expert Advice on About. All 67-up AMC V8 blocks were cast, bored and stroked out of the same block. Or they are trying to fugure out what the engine is in a car they have. Although also offered as a large car and truck option, the 454 was most famously used in Camaro and Chevelle SS models from 1970 through 1973. The Hi-Torque manifolds feature state of the art design with a single wall internal casting that is enclosed in a press formed aluminum jacket creating a fully water cooled manifold. This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. 94″ intake valves in 305 heads. The second location is on the underside of the intake runner on the cylinder head. COPO,L78 HEADS good DATES 396 427 BIG BLOCK CHEVY - for sale in geneva, OH, Price: $100 Real deal casting number 842 pair have valves with 163 intake. Reference: Chevy Engine Block Casting Numbers By Bobby Kimbrough September 19, 2013 The Chevrolet small-block engine is a series of automobile V8 engines built by the Chevrolet Division of General Motors using the same basic, and for a V8, smaller engine block. This is probably the best cylinder head casting that Chevrolet has ever produced for a production small block Chevy. Look on the top on either side of center. The block casting number on small block and big block Chevrolet V8 motors is located on a ledge found at the rear of the block, most often on the driver's side. the second heads, they flow about 152 cfm through the intake valve and 93. on the side of the block there is a number 088. updated video of small block chevy casting numbers locations with shots of the numbers visible. Big Block GM Hi-Torque Standard Kit. You will likely not acquire a fully numbers matching piece with a VIN number, but you can certainly equip your build with an original block and heads with the correct casting and date numbers and features that came on the original car and that's a great start toward building a pretty legit piece. Scrape the oily goo off and read the letter at the lower left corner of the head, near the #1 or #8 spark plug hole, a letter about 1. Cylinder Head, DHC™ 175, Fast As Cast®, Assembled, 1. The Hi-Torque manifolds feature state of the art design with a single wall internal casting that is enclosed in a press formed aluminum jacket creating a fully water cooled manifold. Big Block Chevy Casting Numbers ; Small Block Ford. com - Hot Rods - Musclecars - Project Cars - Farm Trucks. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Olds/Chevy DRCE 2 Pro Stock aluminum. A letter indicates a big block, a number indicates a small block. BBB Accredited Business. If a vehicle was ordered with as "high-performance" with a big block, that engine received rectangular-port heads. We've compiled some history and a massive library of parts swap knowledge into a comprehensive resource. Small Block Heads; 348-409 Heads; Big Block Heads; Intake Manifolds. do NOT contact me with unsolicited services or offers. Chevy Big Block Casting Numbers. Check this casting carefully to determine which features it may have. This engine block was one of nine different blocks used to produce the "396 Big Block" engine. they have been in a garage for over 20 years and the condition reflects. I'm trying to get as much information as possible from the casting numbers of a motor I just purchased without tearing into it. Got some questions? Looking to post regarding this information, CLICK HERE! Interactive casting number pages can be viewed by following these links: 300/340. Casting Number. These heads have large oval intake ports and closed combustion chambers. Casting Date Small block casting date is located on driver side rear of block on flange forward of bellhousing. The third place the casting number can be found is on the top of the left (driver's fromt, passenger's rear) exhaust port. Big Block Chevy. 75" or 14") or number of teeth is more accurate because some 168 tooth flywheels are drilled with multiple bolt patterns, and the aftermarket makes a 153 tooth flywheel that a 11" clutch and pressure plate will fit. rectangular port, closed chamber, 2. Block Numbers. Our new, highly efficient port designs outflow the competition at. 5" high followed by the casting number. 454 big block chevy 4 bolt main, roller cam and roller lifters, 1 piece rear main seal, flat top pistons, Gen 6 big block. All V8 engine casting numbers are located on the top left flange at the rear of the block where the flywheel attachment is formed. With 200cc intake and 69cc exhaust ports, World’s Sportsman II cylinder heads offer 30-70 horsepower gains over OEM cast iron heads, yet are 50-state emissions legal. Big Block Chevy Parts Below you will find parts for big block Chevy engines. HEAD CASTING MARK vs CASTING NUMBER:. The W-series design placed the spark plugs at a straight-in position. Casting flash is excess material that flowed between the cores during casting. Here we have the venerable E7TE-PA 5. The Edelbrock #60459 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants perform. I have a restored 1948 Chevy 3600, and the engine has a 235 block id stamp ( 3837004), but the valve cover looks like the 216 configuration with the 2 bolts running down the center. by Ron Dettling For those of you who rummage around wrecking yards, swap meets or other likely places to find basic GMC engine parts, blocks, cranks, heads, etc. Casting Number. If you see the casting numbers 3951509, or 330817, you will know that you have a 2bolt main 400. A letter indicates a big block, a number indicates a small block. World Products’ Merlin IV engine block is the latest evolution of its aftermarket big-block Chevy block. Square Port heads, GM Part Number 14096188 (Bare Heads) I have had the heads cleaned and Magnafluxed since these pictures. The casting number should be 3951511. Presenting in stock and ready to ship now online! Large Blank Trailer Id Data Plate Vin Number Tag Nameplate. Big Block Performance Heads Tips Block Exhaust Crossover Install cap plugs (2 per head) to block off the crossover passages. In '87 GM introduced the new Gen V engine with Vortec heads and a stroker crank to pump out 496 cubes (8. These heads have rectangular intake ports and closed combustion chambers. com, the official website of Sport Truck. Some heads do not respond to our C. The block casting number on small block and big block Chevrolet V8 motors is located on a ledge found at the rear of the block, most often on the driver's side. 000-inch-diameter intake and 1. Locate your engine casting number on the left hand side of the engine. 454 big block chevy 4 bolt main, roller cam and roller lifters, 1 piece rear main seal, flat top pistons, Gen 6 big block. The "peanut port" or small oval port heads started showing up on 1977 model year light duty trucks, not all 1977 454's got the peanut port heads. Find 10128213 Standard In Stock Now. You may have to register before you can post: click the register link above to proceed. As mentioned, if you remove one of the valve covers you can find the cylinder head casting number. Chevy Chevrolet small block V8 engine casting numbers - WaywardGarage. It came with the block that I bought I am rebuilding the 402 BB but I need to know what carb the intake manifold takes. 5" high followed by the casting number. 88" exhaust valve. Edelbrock Performer RPM Oval Port Cylinder Heads Part Number: 350-60455. Our new, highly efficient port designs outflow the competition at. Flow measured at 28" of depression. GM SBC Block casting numbers ID Chevy big block Ford. Part #: BP4962CTC. BBC Chevy Big Block Heads 049 - $349. One of the most rare cylinder head for the big block chevy is the 375 horsepower 396 and the ZL-1 427 aluminum head. Chevrolet Performance Big Block Chevy Bow Tie Aluminum Cylinder Heads Show Product Info Chevrolet Performance Bow Tie Cylinder Heads are an ideal combination of street drivability and drag strip performance. HEAD CASTING MARK vs CASTING NUMBER:. Chevy V-8 Big Block Casting Numbers; Chevy Engine Codes (Lots of Engine Related Information & Numbers) Corvette Options. Stage1 heads do not have a special casting number over non-stage1 heads. 3500 ask. With the devolopment of these heads it made almost all other stock factory head obsolete. Alright, a little Big Block Oval Port Head history here. This item is not sold as a pair, this is a single cylinder head. Price: - Item head casting #3931063 dates j 10 8 and h. com It shows that you are unregistered, or not logged in to The Forum. Date coded for March 1966. Engine Blocks. RHS is the leading developer of high performance cylinder heads, engine blocks, intake manifolds and related components for street performance and race engines. The peanut port heads are actually not bad for low to mid rpm performance, lots of torque. World Products’ Merlin IV engine block is the latest evolution of its aftermarket big-block Chevy block. Air flow facts on 305 heads. Click Header to Sort. Flow data based on Cylinder #1 intake and exhaust port. If you have to have original heads, a book of chevy casting numbers is a must. Highly recommend Clearwater Cylinder Heads have purchased two sets of heads for my business totally satisfied with everything I love the fact they do not charge you core they give you 30 days to get the vehicle running and return the cores at their cost this is a great thing we are corms transmissions and Complete Auto Care Monroe City Missouri will continue using Clearwater Cylinder Heads. The specific model/vintage of Big Block V8 Mercruiser Marine Engines can be determined by looking at the last letters of the engine code which is stamped by General Motors at the time of assembly on all complete Marine Longblocks. Small Block Chevy Engine Block Identification; Chevy Small Block V-8 Casting Numbers; Chevy V-8 Big Block Casting Numbers; Chevy Engine Codes (Lots of Engine Related Information & Numbers) Chevy II - Nova Options. 4L/454 Cylinder Heads with Cast iron Cylinder Head Material and get Free Shipping on Orders Over $99 at Summit Racing!. Chevrolet Head Casting Number Reference Small Blocks 330545 350 73 Corvette 76cc 2. Original matching numbers. As mentioned, if you remove one of the valve covers you can find the cylinder head casting number. Can you tell which water pump is for pre-1969 applications? Does the complete casting number always appear on all crankshafts? Answers to these questions and many more fill this complete guide to all 1955-93 Chevy V-8s. See pictures. 6 Duramax Diesel Cylinder Head Pair 2001-2004 Lb7. A big block measures 14" between the heads at the manifold base. However that doesn't mean you can't realize very good performance for other head castings. 19 inch intake and 1. Aluminum Olds/Chevy DRCE 2 "Pro Stock" for blocks with 4. These cylinder heads have a 320cc intake runner and 128cc exhaust runner, so they are great for street and off-road application were you would like to have good low in power. GM LS6 Pistons and 7/16" Dimpled rods. Small Block Chevy Cylinder Head Casting Numbers. stands behind each product we manufacture 100%. The AC spark plug has the four green rings. Production Numbers for the Chevrolet Corvette (If You Dig Around) General Corvette Information. Please see the attachments below for a list of cylinder block, head, and crankshaft casting numbers used on Ford big block engines. Flywheel Diameter (12. Casting # CID Year Copied from Chevrolet Big Block Parts Interchange Manual Magazine. These heads are bare and ready for your valve train setup. Watch as we compare popular oval-port big-block Chevy cylinder heads on the flow bench and the dyno. Each component undergoes a detailed manufacturing process that involves the hundreds of calculated and precision steps to ensure the finest quality possible. The block is a 1970 402 the heads are 427 heads and I don't know what the intake was to. The most common modification done to these small-block Olds castings is to install the 2. I am always getting phone calls from people with a bunch of engine casting numbers wanting me to help them identify engine parts. Presenting in stock and ready to ship now online! Large Blank Trailer Id Data Plate Vin Number Tag Nameplate. big block GM style stroker crate engine - dressed longblock with carburetor. your building a budget small block chevy what heads should you be looking for and what to stay away from see part 2 http://youtu. Watch as we compare popular oval-port big-block Chevy cylinder heads on the flow bench and the dyno. 1969 Chevrolet Kingswood wagon 427 big block impala caprice chevy chevelle. I plan to resell it and I want to know what I have. Different chamber volumes, port volumes, port locations, valve sizes, etc. Big Block Chevy Cylinder Heads Open vs. Highly recommend Clearwater Cylinder Heads have purchased two sets of heads for my business totally satisfied with everything I love the fact they do not charge you core they give you 30 days to get the vehicle running and return the cores at their cost this is a great thing we are corms transmissions and Complete Auto Care Monroe City Missouri will continue using Clearwater Cylinder Heads. It is street legal for 396, 402, 427 and 454 V8's with OEM 4-bbl carb. If a vehicle was ordered with as “high-performance” with a big block, that engine received rectangular-port heads. 94″ intake valves in 305 heads. Casting numbers for Chevrolet big-block engines uniquely identify the engine type and intended use of the engine and may contain additional information about the engine's unique features. V8 Block & Head Casting Numbers. 3L Chevy V-6 - Hot Rod Magazine. The casting number is probably the most significant feature on a cylinder head as it's the hardest to alter. Block casting number - 3963512, tab number - CE074627,Date of Build J-11-9, Pass hi-perf. 6 Valves 333881 350 74-75 76cc 2. 5" high followed by the casting number. Part Numbers are located and stamped on the ends of the heads prior to 2005, then engraved on the ends of the heads after 2005. Find great deals on eBay for big block chevy engine parts and used big block chevy engines. M 454 crate motor, the block #is #12550313, the head #is1611415, an the intake is #165839, I was told - Answered by a verified Chevy Mechanic. This 1973-1984, small-valve iron head displays the casting number (353049) and the PASS logo along with a good example of the large amount of casting flash characteristic of iron big-block heads. I'm putting a 360 in my scamp come spring and am wondering about these heads. bikeg block in Bloomington, Indiana at AmericanListed. I am looking for something that will breathe a little beter. com It shows that you are unregistered, or not logged in to The Forum. Chevy Big Block V8 Engine Block Casting Numbers If this is your first visit, be sure to check out the FAQ by clicking the link above. big block chevy bbc weiand 7544 intake manifold oval port Casting number of 10141279 The GM Performance Parts L29 Vortec Big Block Cylinder Head was used on 1997. We have compiled one of the most extensive lists of block, crankshaft, and cylinder head casting numbers available on the internet. You may have to register before you can post: click the register link above to proceed. Corvette Original 702 Big Block Cylinder. Engine Schematics, torque specs-chevy,international shipping rates,engine parts. That's why we have put together this short big-block Chevy head ID guide to help you identify that swap-meet gold. If you are talking about the small block V-8 Chevy engine, there is a small flat pad with an engine id number located on the block, in front and below the passengers side cylinder head. I "might" get a C5. I actually went through several lists and made some corrections before making this list. Please select a quantity of 2 on the following page to order a pair of cylinders 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. Aprox 80 cylinder heads. 000-inch-diameter intake and 1. 7 V8 94-95 COMP question. Exceptions are Edelbrock cylinder head numbers #6040, #6045 and #6055, all of which require custom pistons. No block-clearance grinding was needed, even with a 0. If you're looking at the engine code - this is already known. 94 intakes, 1. 14015445 Block Casting High Performance. Closed Chamber Chevy BB Oval Port Iron Heads. Mercury Force 819857a3 Cylinder Head Force 90 Nos Casting 650518-1 Buy Now. Includes 30 month / 50,000 warranty & BPE Dyno Promise. do NOT contact me with unsolicited services or offers. Time will tell. 5:1 compression would be plenty to dial up a nice street combo in a 396but even that amount of compression is harder to attain with the big chambers of those heads on a small motor. For example, the code may be cast as C6ZZ-A in 1966 and C8ZZ-A in 1968 even though they are the same cylinder head. RB/B, LA Cylinder Head Casting Numbers: The casting numbers for most RB, B, LA heads are found in two places. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. Yes, a better head will flow more, but that larger flow is generally only needed at the higher rpms. This is a complete 427 Big Block Chevy Engine casting 39663512 date stamping 19J117795 build stamping numbers T1019LE this is a 1969 427 was rebuilt standard bore and put in a camaro I pulled it before selling the car and put it on the stand, it is complete with cast intake with numbers 3855287 and cast manifolds with numbers 3916178 heads have. 88 exhaust: Casting # Years: CID: Chamber: HP/RPO/Comments: 3904392: 1967: 427. 1971 402 Chevy engine - Casting number on block 3969854 - Date code on block B5 71. The flow numbers for Modern Cylinder Head were from a number of different sources, their Web Site updated Nov. Enginequest 119 Cc Big Block Chevy Iron Bare Cylinder Head Pn Enqch454b. I have a collection of blocks/heads/cranks. World Products’ Merlin IV engine block is the latest evolution of its aftermarket big-block Chevy block. The twin-turbo 540 cid big block Chevy engine ended up at a 10. Casting Number. they have been in a garage for over 20 years and the condition reflects. Unfollow big block chevy cylinder heads to stop getting updates on your eBay Feed. The cast number for this head is P/N 14101083 or 14096217. for SBC casting number information. Air flow with 1. They are ready to bolt onto your short block. On the underside of the head on an intake runner, and under the valve cover on an intake runner. The easiest way to ID the LS heads is the 3 digit casting number on the spark plug side of the head. Has a compression ratio of 9. This is a complete 427 Big Block Chevy Engine casting 39663512 date stamping 19J117795 build stamping numbers T1019LE this is a 1969 427 was rebuilt standard bore and put in a camaro I pulled it before selling the car and put it on the stand, it is complete with cast intake with numbers 3855287 and cast manifolds with numbers 3916178 heads have. 360 heads, came on cop cars, trucks vans etc. Chevy Engine Identification Numbers Decoder. Aprox 80 cylinder heads. The casting number on each head is 3919842. A big block measures 14" between the heads at the manifold base. Most flow numbers for MBE LLC heads were from MBE LLC or their Web Site updated Aug. 14015445 Block Casting High Performance. Excellent condition Chevy big block heads. Only 14 left in stock - order soon. Can you tell which water pump is for pre-1969 applications? Does the complete casting number always appear on all crankshafts? Answers to these questions and many more fill this complete guide to all 1955-93 Chevy V-8s. With the devolopment of these heads it made almost all other stock factory head obsolete. Casting # Years made Valve Size. In 1975 General Motors painted all engines corperate blue. 094: 2 & 4 bolt main with spin on oil filter: 3782870: 1968-76: 427: 4. The casting number on Chevy V8's is located on the drivers side of the engine where the block is connected to the bellhousing. The casting number on each head is 6262990 as shown. 94″ intake valves in 305 heads. Edelbrock Performer RPM Aluminum Cylinder Heads for Big Block Chevy Show Product Info. GM body designation. It’s also a 289 casting 454 block. Ford FE Engine Block Casting Numbers NOTE - The information presented here was gathered from a variety of sources. The Edelbrock 615469 Big Block Chevy DR-17 Pro-Port Cylinder head is designed specifically for the professional cylinder head porter and engine builder. Canadian Poncho Homepage-> Canadian Poncho-> Canadian Pontiac/Acadian/Beaumont Parts For Sale-> BBC BIG BLOCK CHEVY FACTORY ALUMINUM HEADS 3946074 SNOWFLAKE Start A New Topic Reply Post Info. The sun will rise each morning, Newton's apple will fall, and if you are going to make power with a big-block Chevy, you have to use rectangle-port cylinder heads. Chevy Chevrolet small block V8 engine casting numbers - WaywardGarage. A Small Block Chevy tech site with Block casting numbers, Cylinder head casting numbers and much more information. Cylinder heads. The block casting number on small block and big block Chevy V8 motors is located on a ledge found at the rear of the block, most often on the driver's side. Casting flash is excess material that flowed between the cores during casting. Small Block Chevy LS Cylinder Heads by Casting Number 10215339 - LS Small Block V8 1997 346, LS1, aluminum, 68cc chambers. Big block Chevy valve sizes? My cylinder head casting number is 6272292, and the Mor-Tec website lists this as an open chamber oval port head. The Casting Number for a LS Series Block is located on the rear of the block just below the drive side head. Actually these heads are ok, I have them on my 71 Nova with a 468 big block. block ( 6 1/2" overall, top) and a shorter. Remanufactured Engines Chevy Big Block. Lot 1 Used Camaro 1965-1990 Big Blocks Nova 300 Corvette Chevy Of Bare Chevelle Blocks Chevy Chevelle Nova Bare Used Of Corvette 300 1965-1990 Camaro Big 1 Lot 1965-1990 Corvette. Engine Build 620 HP 454 Big Block Chevy Part 3 Oval Port Head Core Selection Before Porting. 3500 ask. Chevrolet Head Casting Number Reference Small Blocks 330545 350, 73, Corvette, 76cc, 2. Great prices on chevy cylinder head! Featuring our varied catalog of chevy cylinder head for sale today on the internet. 12480005 - LS Small Block V8 2000 LS1, GTZ, aluminum, 38cc chambers,. HEAD CASTING MARK vs CASTING NUMBER:. big block chevy bbc weiand 7544 intake manifold oval port Casting number of 10141279 The GM Performance Parts L29 Vortec Big Block Cylinder Head was used on 1997. Edelbrock Performer RPM Oval Port Cylinder Heads Part Number: 350-60455. Here we have the venerable E7TE-PA 5. 1975-76 heads are 76cc, open chamber. You may have to register before you can post: click the register link above to proceed. Call or text if interested (650) 224-eight four 56. As of mid 2012 the Part Number was moved to the intake face just under the valve cover rail. usually came on a 1969 chevelle 375 hp, 396 engine but could have been from a corvette 427 motor. With the valve covers and intake manifold on 99% of BBC heads look the same. Unfollow big block chevy cylinder heads to stop getting updates on your eBay Feed. Mercury Force 819857a3 Cylinder Head Force 90 Nos Casting 650518-1 Buy Now. Watch as we compare popular oval-port big-block Chevy cylinder heads on the flow bench and the dyno. Not original. Ford FE Engine Block Casting Numbers NOTE - The information presented here was gathered from a variety of sources. Chevy small block casting number cross reference Small Block Chevy Casting Numbers. A Chevy big block engine can be identified by the engine code or casting numbers that are stamped on the engine. Block casting number - 3963512, tab number - CE074627,Date of Build J-11-9, Pass hi-perf. Is that correct?. 1973, AAS, Truck, 427. 12480005 - LS Small Block V8 2000 LS1, GTZ, aluminum, 38cc chambers,. 1L / 496 engine. 348-409 Chevrolet Cylinder Heads. A few years back MFR426 (Mike) built a mild hyd cam 500in motor with non-ported stealth heads. 750 lift cam Titanium retainers and 10deg locks Fresh 3 angle Valve Job and spring install. A letter indicates a big block, a number indicates a small block. Founded in 2007, we offer an extensive selection of cylinder heads for Ford, Chevrolet, and GMC performance engines. 348 and 409 block casting codes, head casting numbers, exhaust manifold casting numbers, and intake manifold casting numbers. 72-inch valves. 6 Gm V-6 Dohc Cylinder Heads. I did a little reaserch and from what i was able to find they are hp. big block chevy stamped numbers the other number is the block stamping id which is kinda like the name implies stamped into a machined pad at the front of the passenger side cylinder big block chevy e. , it is highly frustrating to find a treasure that you know is GMC, but which you can't easily identify. Intake Manifold – Intake casting numbers on most all Chevrolet V8s are found on the top side close to the carburetor mounting pad. Photos and diagrams of Chevy casting number locations for blocks and heads for big block and small block engines.