Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block The suffix tells you application, original model, Engine RPO, and HP and transmission that were originally mated to the engine. Chevy Smallblock Decoding Since there are several numbers on the block, we need to identify the ones we're gonna use. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. Engine Code Stamping Numbers distributor. For example, the casting number 3743096 belongs to 327-cubic-inch V-8 engines on the 1962 to 1967 GMC pickup trucks. Click here for Chevy Engine Code Listings. Chevy Small Block Engine Casting Codes The Engine Block Casting code is one of the best ways to identify a Chevy engine block. With that said, most Chevy bells will physically fit Small Blocks from 1955 on up, 6 cylinders from 1963 on, and all Big Block engines, W engines, as long as they are Chevrolet engines. All pre-'68 327's had small-journal forged cranks. Search your casting number. 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 168 Tooth . This match is done via the PARTIAL VIN stamp on the component. Small Block Chevy Engine Block Identification General Engine Block Specifications While 6 different bore size blocks have been produced, the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Small Block Chevy Crankshafts. 283 blocks (3.875" bore, 2.3" main), 302/327/350 blocks (4" bore, 2.3" or 2.45" mains), and 400 blocks (4.126", 2.65" mains). Lastly, in extreme cases, you'll want to verify the numbers stamped onto the component were the ones stamped into it originally and aren't restamped. If it's a Saginaw/Flint casting, it's a desirable item for '62-'65 Corvette restorers; they're always looking for good 870 blocks. It is completely assembled with 1.94/1.50-inch valves, and 64 cc combustion chambers. It can be machined for 2.20/1.60-inch valves. The casting number is a six-, seven- or eight-digit number, depending on the model year and model of the vehicle, found stamped on the head. ... Pontiac/Chevy Aluminum Small Rectangle port. V8 codes are stamped on a pad just forward of the right side (passenger) The two locations in which you can find the casting numbers on Mopar cylinder heads. here. Look on the top on either side of center. Small block casting date is located on driver side rear of block on flange forward of bellhousing. Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec, Chevy Small Block - Engine Block Casting Numbers, QUICKLY IDENTIFY A CHEVY ENGINE CLICK HERE, Click here for Chevy Engine Code Listings. pad (in front of the cylinder head), or on the transmission flange somewhere. Some engine This Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange. Casting Dates All crankshafts have a casting number located on one of the rough finished throws or counterweights towards the front of the crank. 1954-1955 235 Engine 3835913; 1956-1962 235 Engine 3836848; 1956-1962 261 Engine 3836850 Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Small Block Chevrolet engine suffix codes. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). As new castings are released on late models keep your eyes open for the new numbers. We appreciate the support and encouragement we have received from our visitors around the world for the past 20 years. This Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange. I only put the numbers here that I can prove, so this is a short list. We are always looking for new castings numbers. could have happend (or not happened). Re: Engine Casting Block #3970010 02-12-06 08:07 PM - Post# 873994 In response to joeysworld The difference is the suffix code on the block. Casting numbers for small-block cylinder heads are usually located between the valve spring seats under the valve cover for Gen I and Gen II heads and in the valve galley on the newer cylinder heads. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. VIN Code Format CHEVY SMALLBLOCK V-8 Crankshaft Casting Numbers SBC TWO PIECE REAR MAIN OIL SEALS 1130.......327.......forged..mediumjournal...3.25" stroke That block casting number was also used in 1964-67 passenger cars including the Chevelle and Camaro as well as Chevrolet trucks. Numbers matching is important when you're trying to decode a Z28 or Super Sport where the VIN won't identify the vehicle as such. GM used engines from other divisions in Chevy cars. Small block casting date is located on driver side rear of block on flange forward of bellhousing. It can be a bit hard to see with the ignition shielding in place but the numbers are fairly large. Small-Block Chevy V8 Casting numbers by Mortec Chevy BB and SB casting number "go-to" site from outintheshop.com Smallblock info from nastyz28.com SBC ID from www.73-87.com SBC casting numbers from classictruckshop.com Chevelle-specific block casting number info Inline engine casting numbers from inliners.org BBC casting numbers. The Chevrolet small-block engine is a series of V8 automobile engines used in normal production by the Chevrolet division of General Motors between 1954 and 2003, using the same basic engine block.Referred to as a "small-block" for its comparative size relative to the physically much larger Chevrolet big-block engines, The small block family spanned from … 72cc Bowtie Aluminum Rectangular port 400cc intake. The engine date must precede the car build date, otherwise something is amiss. The small-block family line was honored as one of the 10 Best Engines of the 20th Century by the automotive magazine Ward’s AutoWorld. date and suffix code. done. The point of this article is to help you figure out how to decode stuff. The Engine Code page is where this topic is further detailed. If you are looking for the actual Chevy engine codes that are stamped into the block during assembly, Nasty Z-28.com has an excellent block stamping number decoder. 427. or it doesn't. But numbers correct is not numbers matching. 2532080 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves. Chevrolet issued The casting number on my 1966 is 3858174 which is identified as a 327 ci V8 block. Engine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) Chevy V8 Casting Number Locations 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 … If it doesn't match - is it correct? If you have ever heard that the new style 235 gets better compression numbers with an "848" Head, look for the last three numbers of that Casting Number. Some folks use these terms loosely, or will say "numbers correct" or something to that effect. 2.19/1.88. When people say "It's numbers matching" - what they mean is the engine (or other component, i.e the transmission) can be MATCHED to the vehicle it was Casting #3729001 Chevy 168 Tooth Cast Iron. QUICKLY IDENTIFY A CHEVY ENGINE CLICK HERE - for decoding engine codes. To learn how to locate your casting numbers, casting dates and suffix codes, see Chevy V8 Casting Number Locations Page 1 and Page 2. To 90-94. … 6 cylinder engines are stamped on the passenger side of the block behind the The vin code format is stamped onto most engines. next to, or under the engine code ID. otherwise - it's not. Chevy block casting numbers can usually be found on the rear of the block adjacent to where the block and transmission meet. 283 blocks (3.875" bore, 2.3" main), 302/327/350 blocks (4" bore, 2.3" or 2.45" mains), and 400 blocks (4.126", 2.65" mains). 10036033 Small Block V8 350, 4-bolt, Goodwrench crate engine, 2-piece rear seal The format consists of divisional identification Engine Code Years Cid Application Engine Vin Hp Bbl Gm Body Comments ; 1: C: 1957: 265 end of story. The partial VIN will match the vehicles VIN. Small block chevy head castings; Casting # Combustion Chamber size CCs Intake valve Exhaust valve Production Years Misc Engine; 10033867: 62cc: 2.02: 1.60: over the counter 23 degree, angle plug, 196 cc intake runner, Aluminum You need to decode the engine technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what Block Casting Number The block casting number on smallblock and big block Chevy V-8 motors is located on a ledge found at the rear of the block, most often on the driver's side. Two types of crankshafts are offered, cast nodular iron and forged steel. Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)). machining operations (decking) will obliterate the engine ID. This page has basic information on it, but it's a portion of the Small Block Chevy numbers information. cylinder head. General Decoding Information Chevy/Olds Rocket block 4.00"-4.190" bores 400 mains journal sizes splayed steel caps wet sump raised cam 2-piece rear seal 9.300" deck We would like to thank everyone that has contributed to the data provided on this site. 10052902. Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. Chevrolet Small V-8 Cylinder Block Casting Numbers 1955-1985 These listings … This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. 2465315 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves. Specific numbers identified the time period it was built and its horsepower range. originally used in. Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. Again, it either matches The difference is the code on the front of the passenger side. Generation I Small-Block. If it does - it's "numbers matching", The engine code and partial vin # will accurately nail down whatever the thing is rather quickly, and the other information will fall into line with that. The Chevy small block 327-cubic-inch V-8 engine can be identified by its engine code stamping numbers. The primary pieces of information you'll decode are the Engine Code and Partial VIN. Chevy V-8 Casting Number Locations by Mortec Chevy BB and SB casting number "go-to" site from outintheshop.com Smallblock info from nastyz28.com Small Block Chevy Engine Block Identification General Engine Block Specifications While 6 different bore size blocks have been produced, the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. For a list of assembly plants, click 2536178 – 1966, 273 LA-series small-block… All engines are stamped with an engine ID code, consisting of assembly plant code, production 2268341 – 1962-1967, 318 LA-series small-block, 1.84/1.56 valves. 454. Chevy engine casting numbers. 10051128. Small Block Chevrolet Cylinder Head casting numbers /minuit10 / corvette /head chevy /corvette l82 What You Can Learn From Small Block Chevy Casting Numbers All engines are stamped with an ID serial number showing plant code, production date, and suffix code. :thumbsup: JohnZ This is my opinion, and the generally accepted norm: Thanks! Big block on the right side of engine above the oil pan rails. Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! LA Small-Block Mopar Cylinder Head Casting Numbers. VIN code format Example: 13N100001 You can decode the casting number. If you have some information you want to share with us and our visitors, stop by the Forum and leave us a post! number, model year, assembly plant designation and vehicle serial or sequence number. Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). Here is a list of casting numbers, along with their original applications. Could be a DZ 302. The first one I usually use is the block casting number which is located at the back of the driver's side cylinder head and will look something like: 3970010. Just above where the water pump bolts. "Numbers Matching" Big block on the right side of engine above the oil pan rails. And you can check dates. In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped Choose Group to View Engine Block Codes Select Block Casting Group ALL Block Codes 262, 265, 267 302, 305 or 307 327 350 400 Could be a 145 HP 350 from a 1975 caprice. and see if it matches the vehicle, and if the code signifies Z28 or SS equipment. Chevy cylinder head Identification - Small block casting numbers, Big block …