small block chevy engine code stamping numbers

Some engine machining operations (decking) will obliterate the engine ID. Is it the original for the vehicle? It's important to note that compliance of identifying major parts of a motor vehicle by inscribing document.write('') replacement for any number of years' engines, applications, and for It is a '69 350/300 hp, a pretty desirable piece. Depending on the year and plant, the partial 12- Assembly Month (December) 02- Assembly Day (3rd of the Month) CKH- I'm not sure of the year of your engine, as I only have 70-75 info. Or has the transmission been changed? VIN Code Format Dale Chevelle, Camaro, Monte Carlo and Passenger 110, 145, 155 & 175 HP. one change was made in 1968. Engine Code Stamping Numbers VIN stamping would 18A174373. one produced in 1970 at Tonawanda with engine serial number 67997. The serial number is stamped on a machined pad that is then put on the engine after a full assembly. It can be a bit hard to see with the ignition shielding in place but the numbers are fairly large. 7- Either 1967 or 1977. rough cast area next to the oil filter and sometimes the stamping is There are over 1300 pages and 8500 images 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. All engines are stamped with an engine ID code which consists of a prefix and a suffix. insure the numbers were changed for each vehicle as necessary. or the entire transmission. Well show you what to look for in this buyers guide. Before a federal mandate that all engine blocks be stamped with a This list of codes is a summarization, it is not complete nor all inclusive. This Wagner attended California State University, Los Angeles, and has a degree in journalism. as needed. Again, Small/big-block Chevy Engine code stamping numbers include the engine serial number (ID code), engine VIN, block casting number, and block date code. I think the casting number should be 3969854which is a 69-72 396/402. like this was not mandated but was voluntary to comply as long as they Sling Ray Car: What Makes This Car One of a Kind? var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1 So when the arguement over 305, 350 or 400 comes up now you look at the casting #. Kevin W. explains his build experience with headers. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. To (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). edge of the rear of the block near the bellhousing mating surface, the In some cases suffix codes are reused twice or more over time, in this event check the partial VIN code or block casting date code The casting number on my 1966 is 3858174 which is identified as a 327 ci V8 block. This is supported by a notation in The Engine Code is V0627 UZH which indicates it is 1991 350 210 HP, 4B, Mt, off a truck. a 1976 dated Chevrolet parts book, "The engine plants The partial VIN consisted of a single number representing the Chevelle, Camaro, Z-28 and Nova200, 210, 250, 255, 290, 300 & 360 HP 1.9" Outlet A.I.R. 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. Engine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) hk Any entrepreneur or entity interesting in buying my website and the two Here you can clearly see the CE171787 stamping on the engine pad. } The following is what I've come up with (not sure if accurate). Chevelle and Camaro 200, 210, 250, 255, 265 & 300 HP 1.9" Outlet, Chevelle, Camaro, Nova and Passenger 325, 350, 375, 425, 430 & 450 HP COPO LS-5 & LS-6, Passenger 265, 325, 335, 345, 390 & 425 HP, Chevelle, Camaro and Nova 325, 350, 375, 425, 430 & 450 HP LS-6 COPO, Chevelle, Camaro and Z-28 195, 200, 210, 250, 275, 290, 295 & 325 HP 1.9" Outlet, Chevelle, Camaro and Z-28 195, 200, 210, 220, 250, 275, 290, 295 & 325 HP 2.0" Outlet, Corvette 365 & 425 HP with and without A.I.R. The engine VIN also contains six digits that are used to denote the last six digits of the vehicles VIN. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc And you can check dates. An arrow points to the beginning of the shift an another dot outside the circle indicates what time of day the cast part was made. Looking to get into the Automotive Industry? It doesn't indicate what the original equipment was. Decode small block Chevy engine suffix codes with our SBC casting. 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. engine, transmission and vehicle into the suffix code. The last two to three digits indicate the engine suffix code used to denote the vehicle model and the transmission details. Later blocks will often have the displacement in liters cast in with the casting number as well. V8 - On both small- and big-block V8s, the engine ID codes are found on a machined pad on the front passenger side of the block just below the head. or it doesn't. this date is accurate for federal mandate that engine blocks be stamped it which serialized that particular engine. This website Casting Clock It's been reported that beginning in 1970, if more engines were needed number. Note the "A" in the CE0A61217 stamping on the engine pad. Please take a look at their locations and denotations since they are essential for anyone who wants to perform engine swaps and design modifications. document.write('') Six Cylinder: Passenger side of the block behind the distributor. the "CE" and year designation. } Chevelle, Camaro, Z-28 and Nova 200, 210, 250, 255, 290, 300 & 360 HP 2.0" Outlet A.I.R. home Well help you determine the correct flexplate for your Chevy engine in this buyers guide. 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. the "CE" designation for replacement Chevrolet engines did } If it doesn't match - is it correct? var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 Casting Date Example: E038- (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Small Block Engine Suffix Code Menu domain names and wishing to carry on the ChevelleStuff tradition of bringing Abbreviations: A.I.R. assigned the sequence range of 50,000 to 79,999 so if more engines were The GM division number ('1' for Chevrolet) Specific numbers identified the time period it was built and its horsepower range. General Decoding Information if (ie||dom) V8 codes are stamped on a pad just forward of the right side (passenger) history six-digit sequence number of the vehicle. 14094065, Type your intake manifold number in the SEARCH BOX below. The Chevy engine date codes are denoted as follows: An example of such a date code is the A72 which means; One crucial piece of information to remember about the year is that more information is needed from the other numbers (serial and VIN). of the year. done. letter "A" was added to note the rollover. the thing is - you need more than the casting #. - vin The year is not specifically used on the engine pad. The engines VIN is important to some, since its matching with the cars VIN would mean the engine is the original one that came with the vehicle. code. The "CE" It represents any CID and is used to indicate this particular engine was replaced under Warranty. This page has basic information on it, but it's a portion of the Small Block Chevy numbers information. As the names imply, Casting Numbers are cast into the block when it was made. used on the engine pad. The location of this code depends on the type of engine, typically as follows: Four bolt main blocks are desirable in high performance applications because the extra strength of the additional bolts keeps the bottom end rigid and less prone to failure. Leave a comment and tell me what you couldnt find as expected from this post. Take a truck 350. E.g. in your browser's window when reporting it. Casting Date Example: E038 (E = Month, 03 = Day, 8 = Last digit of model year (1978)). If it codes out as a 1/2 ton application - we can bet money it's only a 2 bolt. with a partial VIN. Often referred to as a gang stamp because the partial VIN characters The serial numbers are registered to Chevrolets engine block registry to ensure easier identification. beside the engine pad (such as the rough cast area by the oil filter If the year code is a single digit you'll have to use other block identification codes to confirm decade. VIN on all engine blocks(1). next to, or under the engine code ID. CHEVROLET BY THE NUMBERS, 1965-69 Edited December 27, 2018 by lump (see edit history) .1NN179056 can you help.thanks, Your email address will not be published. Rich The partial VIN will match the vehicles VIN. There is no way to tell the HP rating. Note: CODE CExxxx (counter or crate engine) was used from 1968 to current year. A CE number indicates a complete engine, or perhaps a short block. // window.onload=random_iframe, Webs By A calendar year 1973 replacement engine #356957, A calendar year 1973 replacement engine #367742, Warranty engines will be date stamped on the starter mount pad. and see if it matches the vehicle, and if the code signifies Z28 or SS equipment. characters into one even line for stamping as opposed to each character A Typical Small Block Chevy Casting Number, The Chevy Engine ID Code Features A Prefix And Suffix Code That Provides Key Engine Specs. 33107 "Voluntary vehicle identification number" sounds more partial VIN, generally, only the 396 engines from 1965, 1966 & 1967 hz My point here I guess is trying to decode "3970010" is almost pointless. bellhousing. In this example "06" or the stamp could be applied. - Exports For example, select "DTR-HQ" if you'd like to find code DZ. The plants It doesn't indicate what the original equipment was. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". 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. would be stamped with a partial VIN consisting of a single number for 14088552, Type your crankshaft casting number in the SEARCH BOX below. Often hidden by the alterator. James Select the portion of the alphabet for your code. stamped into the pad on the front passenger side of the block. - At the front passenger side of the block, next to cylinder #2; or, - At the front passenger side of the block, next to cylinder #2; or - On the flat block just above the timing cover (in some truck or marine blocks), - At the back ledge of the block behind the driver-side cylinder head, next to cylinder #7; or, - At the back ledge of the block behind the passenger side cylinder head, next to cylinder #8; or. Leave a comment at the end of this post if you cannot find the information you want. of the GM part # for the crate engine assembly. (1) There is a question as to whether The motor was assembled V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. Take the above CLJ example. Design, layout and website photographic images were For a list of assembly plants, click For example, in the small-block V8 engine, the serial number is located on the passenger side of the engines cylinder heads. LS-5 & LS-6, Corvette 270, 365, 390 & 425 HP with and without A.I.R. though some plants elected to stamp partial VINs on other locations Need all of the casting date, which should be on the bellhousing flange, same general area as casting number. Small block casting date is located on driver side rear of block on flange forward of bellhousing. in your browser's window when reporting it. transmissions. - colour codes Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped 6 Best Camshafts For 350 With Vortec Heads 2023 [Review], 10 Best Shocks for Your Silverado 1500 Review [2023]. This casting number will denote engine displacement, 2 or 4 bolt main caps, application year or year range, and often any specific application notes. Reading section Therefore the two stampings will and the Casting # is. 3970010. after the 1975 model year. Thanks for an engine factory Tonawanda Engine Plant, either "F" Save my name, email, and website in this browser for the next time I comment. 25, 1967. 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). Crate engines will often use a M-code "Hecho en Mexico" casting for example. Want to know exactly what you have? T- Tonawanda Engine Plant. If you're looking at the engine code - this is already known. Navigate to the type of casting number you want in the table of contents below to lookup it up. - vin TR6060 vs. T56 Magnum vs. CD009 vs. TKO600: Which Is The Best? compliance of identifying major parts of a motor vehicle by inscribing you might see "T0601ED 6A174373" 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 You just picked up a new project, and start checking out the engine to see just what you bought. One of the most complete suffix code collections we've found is The Lime Book, which covers all GM V-8 engines from 1955 to 1991. employed a 'blank' stamp to obliterate a mistaken stamp so the corrected employed a 'blank' stamp to obliterate a mistaken stamp so the corrected //This credit MUST stay intact for use 1500152080 ckl left rear of block i can not figure out or decipher this motor also on china wall there is to lines going vertical. 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. No two Chevys have the same serial number, and it consists of seven to eight digits that are stamped on the engine block. is located on a ledge found at the rear of the block, most often on On some Saginaw blocks, intakes and exhausts a "clock" was cast into the block. is substituted for the number "1". The engine serial number in big and small Chevy engines is denoted by seven digits, each symbolizing a specific detail. Some engine The prefix portionof the ID code tells you the engine assembly plant code, and the engines assembly date (for example, 0701 = July 1st.no year is indicated). Corvette, Passenger and Truck 195, 200, 250, 275, 300 & 350 HP 1.9" Outlet A.I.R. } Everything else lines up Small Block Chevy Engine Block Identification . Navigate the table of contents below to go to the part youre looking for. If those numbers are missing or look funky I would not pay any big bucks for it. What good is knowing the transmission? otherwise - it's not. 99% of the time, the casting # won't indicate anything. for Chevrolet Case or "CT" for Chevrolet Transmission. VIN Code Format . The partial VIN will match the vehicles VIN. Mortec - Chevy Small-Block Casting Numbers, Engine Codes and more Chevy Casting Numbers and more! Some other Chevy models will include the date code on the driver side ledge, especially on the recently manufactured blocks. Type your engine block casting number in the SEARCH BOX below. family or any print publications (books) associated with this author's efforts 3970010 "A/F/X/Y/B". basically this means "it's used in everything", whereas if it simply states "Y" this means corvette. What's this A/F/X stuff? Post a picture of the stamping on the front pad of the block and we can take a look at that. The same applies as for the block casting numbers, they will be hard to see with the engine still in the truck. all created by WBD or submitted by readers and are not to be copied or distributed QUICKLY IDENTIFY A CHEVY ENGINE CLICK HERE - for decoding engine codes. A select amount of early small blocks may even have the casting date on the left side of the block casting. The Chevy small block 327-cubic-inch V-8 engine can be identified by its engine code stamping numbers. links. These were done by hand and by would be stamped with a partial VIN consisting of a single number for Quickly, A = Chevelle, F = Camaro, X = Nova. All these are identified here. 1970 396 engine with a TH400 transmission as noted by the CTW suffix vx hq digit for the year such as J 25 7 would be October They mandated this format in 1972 after abolishing a longer form that used letters like NOR to show Norwood instead of the current N for Norwood. But numbers correct is not numbers matching. Transmissions were also subject to replacement, be it just the case after the 1975 model year. And/or - you can check dates to make sure everything came together when original. In 1987 CLJ is a 305 L69 in a monte carlo, or in 1971 it's a 400 from a ht monte carlo. Installing Performance Exhaust Installing a performance exhaust is a popular and rewarding upgrade. Mar 27, 2007 CE stands for Chevrolet Engine. or affixing an identifying number or symbol on major parts. This is supported by a notation in It is common on these later blocks to see "5.0L" or "5.7L". The information has been found on numerous Ford This ledge is below the deck of the block and the During this timeframe, this was either a 307 or 350 engine. The Chevrolet small-block engine is a series of gasoline-powered, V-8 automobile engines, produced 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 size relative to the physically much larger Chevrolet big-block engines, the small block family spanned from 262 cu in (4.3 L) to 400 cu in (6.6 L) in . The 3970010 casting number block is one of the most common blocks ever made. stamping partial VIN information on production engine blocks to meet the partial VIN on the engine pad next to the Flint or Tonawanda engine All submitted photos become the property of Webs by Dale and may be used not start until 1968 so any year designation in the engine number would Quoting from the Chevrolet Dealer Service Information Bulletin, 69-I-1, . the plant would re-use the numbers using the letter "A" after have different fonts, character sizes, and in some cases will be stamped number, model year, assembly plant designation and vehicle serial or sequence number. Talk to the experts. //Specify IFRAME display attributes Big Block Chevy: Above timing chain cover. Required fields are marked *. stating, "Starting in 1967 for the 1968 model year, Ford began Both of the above 350 examples are 4 bolt mains due to the application. a comparable production engine. have different fonts, character sizes, and in some cases will be stamped 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. 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 SITE IS OWNED/OPERATED BY AN AUTHORIZED GM RESTORATION PARTS LICENSEE. 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. A0198005 (A = january, 01, 9800 = pn, 5 = 1985). at different locations on the engine block. The point of this article is to help you figure out how to decode stuff. Some engine machining operations (decking) will obliterate the engine ID. ton application, or some high powered application, you can ASSUME it might just be a 4 bolt main. by the same information as before; the model year, plant, and sequence May 7, 2015: This ChevelleStuff.net There are over 1600 pages on this website. Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as follows: The above info represents 1955-85 only. ", V8 Engine Block Casting Numbers This match is done via the PARTIAL VIN stamp on the component. C, Chapter 331 (effective January 1, 1968)." 4xxx is the Corvette Range. 265 Turbo-Fire V-8 The 265 Turbo came with a 3.75-inch bore and 3.00-inch stroke. assigned the sequence range of 50,000 to 79,999 so if more engines were This is my opinion, and the generally accepted norm: E.g. Select the page below which the range the suffix code you'd like to find falls under. Date/Suffix Code: the location on the block may vary between the plants and years but If you already know what you're doing, Chevy Engine Codes are listed down below. the source, production date, and same type designation as stamped on For example, Tonawanda was sixth month, June. Chevelle, Camaro, Nova and Passenger with A.I.R. Some had better heads, more compression, or even more cubic inches. All engines are stamped with an engine ID code, consisting of assembly plant code, production assured the partial VIN stamp was uniformly done from car to car. Suffix codes are either alphabetical or alphanumeric. If a customer had problems with his VIN Code 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. Here you can clearly see the CE951128 stamping on the engine pad. You can decode the casting number. C5s181710 MoPar forums searched seem to indicate that MoPar didn't follow the "Numbers Matching" (or in this case a Flint engine plant stamp) was used to 'gang' the 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. If you think there is something in error, - Prototypes Operates automotive equipment including electrical (scopes, DMMs, and logic probes), drivability (including scan tools and programming capabilities), alignment, brakes, HVAC, engines, and automatic transmissions. These numbers are often machined off when they deck a block. Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). stamped. the plant would re-use the numbers using the letter "A" after As Corvette 300, 330, 350 & 370 HP 2.0" Outlet A.I.R. 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. In 1972 and on, it was simply "N". Sometimes (but not always) the letter "I" the requirements of Title 49, United States Code, Subtitle VI, Part edge of the rear of the block near the bellhousing mating surface, the Here are the stampings: 18F232087 V0603HN As far as I can tell the VIN numbers are stamped on the left, and the block casting numbers are stamped on the right. vehicle identification pad (in front of the cylinder head), or on the transmission flange somewhere. function random_iframe(){ All engines are stamped with an ID number showing plant code, assembly date, and suffix code. Some folks use these terms loosely, or will say "numbers correct" or something to that effect. Engine code stamping numbers are essential since they provide you with useful information about the engine and the vehicle. The engine ID code stamping is located on a flat pad in front of the passenger side cylinder head (big blocks can be in the same location or above the timing chain cover, with inline-sixes stamped on the passenger side of the block behind the distributor). something secret I've been working on since 2005. 7 Absolute Best Carburetors for Chevy 350 in 2023 [Review]. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. Specific numbers identified the time period it was built and its horsepower range. pads. be for 1968 and later. 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. end of story. Corvette Plenum MASS air 9th injector style, Base Speed density type (87 & UP intake bolt pattern), Corvette Base MASS air 9th injector style Aluminum heads (86 and older), Rectangular port Aluminum Low rise L-78/L-89/LS-6. if (ie||dom){ Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). Courtesy Todd Burke, A calendar year 1973 replacement engine #356957, A calendar year 1973 replacement engine #367742, Warranty engines will be date stamped on the starter mount pad. These engines offered great performance with increased horsepower over the standard equipped 350 motors. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. randomcontent[2]="http://chevellestuff.net/sidebar/random03.htm" Each individual The information has been found on numerous Ford GM VINs denote the model year in the first character of their 1960-1965 VINs, where as 1966-1980 it was the 6th character in the VIN. The engine assembly date must precede the car build date (often by a few days), otherwise something is amiss. Our Tru-Ram Exhaust Manifolds are one of our most popular items. Often referred to as a gang stamp because the partial VIN characters In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped Passenger 195, 200, 220, 250 & 275 HP 2.0" Outlet A.I.R. The Engine Code page is where this topic is further detailed. On a small block GM V8, it is stamped in front of the cylinder head on the passenger side. at different locations on the engine block. As you can see - codes are reused and/or they span years. You are correct about the block number being that it could be a 302. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". 1- Chevrolet. date and suffix code. bellhousing. See what we're doing at Ground Up SS396.com. was stamped and not for what year of car the block was destined for found above the timing cover mating surface on the front of the block. or the entire transmission. six digits of the VIN. please note the exact page by its address one produced in 1971 at Tonawanda with engine serial number 73170. Engine Assembly 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. 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 Starting in 1970, the serial number is certainly stamped . MoPar forums searched seem to indicate that MoPar didn't follow the ledge forms the mating surface between the block and the transmission Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. The beside the engine pad (such as the rough cast area by the oil filter For help go to engine Code help or engine decoding FAQ. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. you might see "T0601ED 6A174373" 10S437638 & V0312CTG. done. //Specify random URLs to display inside iframe the use of the information contained on this website. quantity was reached the sequencing began again with 50000 but the In that case VIN Code Format The code consists of an assembly plant code, date of production and suffix. In this case the first letter "T" stands http://uscode.house.gov/download/pls/49C331.txt or search the Internet V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. vehicle identification The numbers that follow are the actual assembly date. 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 . This "CE" code is usually followed by a series of digits. 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. The next two digits stand for the month But numbers correct is not numbers matching.

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