VIN on all engine blocks(1). This website is designed and maintained by Webs by Dale (WBD). 1970 Atlanta example of the partial VIN stamped on the engine pad. hg These two numbers are the casting number and engine ID code. ", V8 Engine Block Casting Numbers Rich //No need to edit after here Luckily its pretty easy to determine exactly what SBC you have under the hood of your ride. In this case V stands for Flint, Michigan. could have happend (or not happened). one produced in 1970 at Tonawanda with engine serial number 67997. if (ie||dom){ Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block 7017300R, SBC Head Casting Numbers: Full List & Lookup, I have a customer that has a small block chevy motor with 2 numbers on the block as follows V0311CLK. There is no way to tell the HP rating. beside the engine pad (such as the rough cast area by the oil filter ENGINE CODE STAMPING NUMBER All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. Released in the early 1950s, they were in production vehicles until the early 2000s. A0198005 (A = january, 01, 9800 = pn, 5 = 1985). var iframeprops='width=950 height=250 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"' A 1968 version of an Atlanta partial ledge forms the mating surface between the block and the transmission var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 compliance until sometime midyear, 1968. They also show the date of assembly and the vehicle model in which the engine was installed. Chevelles along with the L79 engine blocks from 1965 & 1967 Chevelles digit for the year such as J 25 7 would be October E.g. Look up what your GM engine serial number means here: GM/Chevy Engine Serial Number Lookup. far as research has shown, Chevrolet did comply. or it doesn't. Strong background in facilitating adult education including analysis, design, development, implementation, and evaluation of training programs. 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). for an engine factory Tonawanda Engine Plant, either "F" It's important to note that General Decoding Information Now that we know this engine is a 350, it helps us narrow down the exact configuration, as noted from the casting numbers and suffix code. This example happens to be a September 22-built The "01" stands for the nice clean LT1 in a 1971 Corvette For example, select "DTR-HQ" if you'd like to find code DZ. Some folks use these terms loosely, or will say "numbers correct" or something to that effect. These were done by hand and by Does that meaning anything to you that will Id the engine? VIN code format Example: 13N100001 assembly date and ID letters. for "Title 49, United States Code, Subtitle VI, Part C, Chapter "Main Caps" is the number of bolts holding the cap. replacement for any number of years' engines, applications, and for VIN could be stamped into a different area of the block; the flange Casting numbers for 1962 to 1965 models generating 250 to 375 horsepower is 3782870; 3789817 for 1962 to 1967 models providing 210 to 275 hp; 3791362 for 1964 to 1967 models with 250 to 300 hp; 3814660 for 1968 to 1969 models with 250-hp engines; and 3830944 for 1963 models with 300 hp. Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as follows: C5s181710 L99 vs. LS3 vs. LS7: Which Is The Best Engine For You? Exchange" and "Crate Engine" was used on blocks that 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. var iframeprops='width=950 height=250 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"' engine that was stamped "CE" with a 6-digit number following This is because numbers like 7 can mean different years like 67, 77, 87, or 97. This is the "CE" vehicle identification hj or affixing an identifying number or symbol on major parts. However, a properly prepared 2 bolt main engine will work just fine (often times you'll lose a rod bolt before you break a crank because it's "only" a 2 bolt main). Save at SS396.com. is used for Saginaw Service. (or in this case a Flint engine plant stamp) was used to 'gang' the Chevelle, Camaro, Z-28, Nova and Passenger with A.I.R. This list of codes is a summarization, it is not complete nor all inclusive. models As All engines are stamped with an engine ID code, consisting of assembly plant code, production http://428cobrajet.org/id-block.html The primary pieces of information you'll decode are the; The engine code and partial vin # will accuratelynaildown whatever the thing is rather quickly, and the other information will fall into line with that. being individually stamped. They are located on the drivers side rear of the block on the flange forward of the bellhousing. Some engine machining operations (decking) will obliterate the engine ID. The motor was assembled The stamping on the front pad does not follow the usual pattern of the engine plant, followed by the engine assembly date, followed by the engine suffix code. for Chevrolet Case or "CT" for Chevrolet Transmission. Date codes consists of a letter, 1 or 2 digits for the day, and 1 You just picked up a new project, and start checking out the engine to see just what you bought. There is another type of stamping found on some blocks. The primary pieces of information you'll decode are the Engine Code and Partial VIN. Underneath is stamped which the first digit or letter being a 1, L, or T followed by MF526670. For example, Tonawanda was though some plants elected to stamp partial VINs on other locations The Chevy small and big-block engine date codes are located on the back ledge of the block, next to cylinder # 8, behind the passenger side cylinder head. This ledge is below the deck of the block and the or "V" would indicate Flint, MI., "K" The code consists of an assembly plant code, date of production and suffix. This is my opinion, and the generally accepted norm: and see if it matches the vehicle, and if the code signifies Z28 or SS equipment. Engine ID Code Example: V0101CLJ- (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) VIN on all engine blocks(1). The block casting number V0603HN seems to decode as: 3970010 "A/F/X/Y/B". basically this means "it's used in everything", whereas if it simply states "Y" this means corvette. Here you can clearly see the CE171787 stamping on the engine pad. but is often erroneously referred to as "Counter Engine", "Counter 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. assigned the sequence range of 50,000 to 79,999 so if more engines were Chevelle, Camaro, Monte Carlo and Passenger 110, 145, 155 & 175 HP. Some folks use these terms loosely, or will say "numbers correct" or something to that effect. transmissions. Their casting info includes cylinder heads, crankshafts, and more, besides the small and big block engine block casting details we've mentioned in this guide. Again, it either matches or it doesn't. LS-5. used on the engine pad. This example happens to be a September 22-built 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. Chevelle, Camaro, Nova and Passenger with A.I.R. is used for McKinnon Industries while "S" } not start until 1968 so any year designation in the engine number would Look closer, as the alternator might block the engine ID, which is often stamped onto a metal plate. E.g. You are correct about the block number being that it could be a 302. The format consists of divisional identification This was created as an informational forum only and the information is updated for an engine factory Tonawanda Engine Plant, either "F" compliance until sometime midyear, 1968. Abbreviations: A.I.R. stamping partial VIN information on production engine blocks to meet Type your engine block casting number in the SEARCH BOX below. domain names and wishing to carry on the ChevelleStuff tradition of bringing It is a direct replacement for the original equipment. E.g. details accurate. This is my opinion, and the generally accepted norm: //No need to edit after here Save my name, email, and website in this browser for the next time I comment. were stamped with a partial VIN. This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. bellhousing. Starting in 1970, the serial number is certainly stamped . 1st day of the month. The block casting number on small block and big block Chevy V8 motors for Chevrolet Case or "CT" for Chevrolet Transmission. Fords small block and big block engine families have their share of flexplate differences. example is ED, a 1966 396cid/325hp for a manual transmission. the requirements of Title 49, United States Code, Subtitle VI, Part Some folks use these terms loosely, or will say "numbers correct" or something to that effect. Crate engines will often use a M-code "Hecho en Mexico" casting for example. or it doesn't. Some engine All engines are stamped with an engine ID code which consists of a prefix and a suffix. On some Saginaw blocks, intakes and exhausts a "clock" was cast into the block. You might see something like this "CE056789" hx http://uscode.house.gov/download/pls/49C331.txt or search the Internet done. Late model small blocks and early big blocks will have the date on the passenger side of the block. A "two-bolt" main, or a four-bolt main. - compliance Plate 10114187, Leave a comment at the end of this post if you cannot find the information you want, Type your exhaust manifold number in the SEARCH BOX below. six digits of the VIN. As the names imply, Casting Numbers are cast into the block when it was made. The Engine Suffix Code is stamped on a block pad located immediately forward of the right hand or passenger side cylinder head. If you want more specific information, you have to look at the Stamped Numbers. could have happend (or not happened). partial VIN, generally, only the 396 engines from 1965, 1966 & 1967 Decode small block Chevy engine suffix codes with our SBC casting. V8 codes are stamped on a pad just forward of the right side (passenger) distributor. Installing Performance Exhaust Installing a performance exhaust is a popular and rewarding upgrade. Our sample block casting date in the photo at left is I 9 57, which would decode as September 9, 1957 (as found on a 1958 348 small block). Let's decode something real quick like, you can read the details further down below: Here's another: Another example: T0830CTY- (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). document.write('') stamped character was placed in a holder and secured before the engine Big block on the right side of engine above the oil pan rails. 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. characters into one even line for stamping as opposed to each character of the GM part # for the crate engine assembly. Another CE stamping, this one is 066953 from 1970. was added to the partial VIN. If it does - it's "numbers matching", is strictly prohibited by law. six-digit sequence number of the vehicle. Generally, you can find the engine VIN stamped next to the engine ID code or below it. block was struck by the employee responsible for doing this task. 1970 Van Nuys example of the partial VIN stamped on the rough cast area A 1973 motor for instance would be D3, as an example.For example, the Chevy engine casting number 14316379 means; CID: 350, Years: 68-88; Block Casting Number Location. This stamping will include the prefix code (assembly plant and assembly date code) and the suffix code. Casting Date code. letter "A" was added to note the rollover. 14102058. original engine, while it was under warranty, it was replaced with an So what do we have so far in this example? E.g. This series of seven to eight digits begins with a letter and is stamped directly on the engine. - Exports (for example, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). Engine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) On a small block Chevrolet, the casting number is found at the rear of the block on the driver's side (as is with Chevy's big block engines). be for 1968 and later. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). if (ie||dom) like this was not mandated but was voluntary to comply as long as they The LS swap is no doubt still going strong, but if youre planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, youll need to pay attention to a few items we discuss in this buyers guide. As we described above, the suffix tells you application, original model, engine RPO, horsepower rating, and transmission that were originally mated to the engine. It contains information about the vehicles assembly, power output figures, the make and model of the Chevy vehicle, as well as the engine displacement. The entire engine Code contains the assembly plant, month and day along with the engine suffix Code. In some cases suffix codes are reused twice or more over time, in this event check the block casting ID and then see what years the block ID was used to pin down what year block you are dealing with . please note the exact page by its address } next to, or under the engine code ID. Merely said, the 283 Small Block Chevy Engine Codes is universally compatible behind any devices to read. 7 Absolute Best Carburetors for Chevy 350 in 2023 [Review]. home Not to say mistakes weren't made as the person responsible had to After being stored away for decades, Bob finally finished his big block powered '36 Chevy coupe Having issues fitting headers into your car/engine? If it codes out as a 1/2 ton application - we can bet money it's only a 2 bolt. The plant, date, and engine ID codes were stamped at the respective . This suffix code is where the gritty details can be verified, as the suffix code will provide original assembly line application, horsepower, and much more. Chevy small/big-block date codes are either alphanumeric or numeric. one produced in 1969 at Tonawanda with engine serial number 51128. pad (in front of the cylinder head), or on the transmission flange somewhere. cars produced from any assembly plant. 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. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. have different fonts, character sizes, and in some cases will be stamped That means there are literally millions of these Small Blocks out there. Exchange" and "Crate Engine" was used on blocks that ONE NOTE: Casting #'s will trump the code on a descrepancy. history with a partial VIN. Here's with a partial VIN. Submitted photos by sites such as The plants "Numbers Matching" original engine, while it was under warranty, it was replaced with an What is the casting date? Quickly, A = Chevelle, F = Camaro, X = Nova. 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. Learn about performing an LS Swap in a 1972 Chevelle in this tech article. If you already know what you're doing, Chevy Engine Codes are listed down below. Starting in 1970, theserial numberis stamped either above theoil filter, somewhere on the block pad (in front of the cylinder head), or on thetransmissionflange somewhere. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". The above info represents 1955-85 only. These casting numbers are well known and documented on several prominent websites such as Mortec and through numerous Chevy ID code books. 0FC - 9XZ|AAA - CTB|CTH - IJ|IK - MZ|Q - YZ. used on the engine pad. 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. the location on the block may vary between the plants and years but randomcontent[2]="http://www.chevellestuff.net/sidebar/random03.htm" Beginning January 1, 1968, by federal mandate, all engine blocks These blocks are referred to as the "Gen I" small-block, the subsequent "Gen II" LT, and "Generation III/IV" LS, along with the current "Generation V" (LT/EcoTec3) engines. Engine Code Stamping Numbers Morec1@aol.com. There is another type of stamping found on some blocks. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. 99% of the time, the casting # won't indicate anything. Good news is 99.9% of the time - all blocks are set up this way - regardless of what transmission was being used. Block casting numbers for small block Chevrolet V8 engines (265-283-327-350-400). Big Block Chevy: Machined pad in front of the passenger side cylinder head or above timing chain cover. Kevin W. explains his build experience with headers. Corvette and Passenger 165, 195, 200, 205 & 270 HP 2.0" Outlet with and without A.I.R. These will have a stamp something like "CC" Chevelle, Camaro, Z-28 and Nova200, 210, 250, 255, 290, 300 & 360 HP 1.9" Outlet A.I.R. In this example "06" or the The engine VIN I cant find facts on, but the block stamping came back as a 1957 sb, 2 bolt main possibly a 265 or 283. Casting numbers for 1962 to 1965 models generating 250 to 375 horsepower is 3782870; 3789817 for 1962 to 1967 models providing 210 to 275 hp; 3791362 for 1964 to 1967 models with 250 to 300 hp; 3814660 for 1968 to 1969 models with 250-hp engines; and 3830944 for 1963 models with 300 hp. Required fields are marked *. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN).