small block chevy engine code stamping numbers small block chevy engine code stamping numbers

Some had better heads, more compression, or even more cubic inches. 1st day of the month. vehicle identification engine assembly plants while the partial VINs (when applicable) were I'm trying to decode the engine code stampings on the front lip of the cylinder heads on the passengers side of the vehicle. 7 Absolute Best Carburetors for Chevy 350 in 2023 [Review]. = Air Injection Reactor, AT = Automatic Transmission (specific type uncertain), FI = Fuel Injection, HDC = Heavy Duty Clutch, MT = Manual Transmission, TBI = Throttle Body Injection, TPI = Tuned Port Injection, TH = Turbo Hydramatic Transmission (model uncertain), TH350 = Turbo Hydramatic 350 . home The format consists of divisional identification 14094065, Type your intake manifold number in the SEARCH BOX below. you might see "T0601ED 6A174373" Reading section There is another type of stamping found on some blocks. V8 codes are stamped on a pad just forward of the right side (passenger) 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. Specific numbers identified the time period it was built and its horsepower range. Required fields are marked *. at a given plant in a year than the range of sequence numbers allotted, nice clean LT1 in a 1971 Corvette Corvette 190, 195, 200, 235, 255, 300, 330 & 350 HP 1.9" Outlet A.I.R. Mar 27, 2007 CE stands for Chevrolet Engine. assured the partial VIN stamp was uniformly done from car to car. It's a 350. compliance until sometime midyear, 1968. found above the timing cover mating surface on the front of the block. like this was not mandated but was voluntary to comply as long as they any registrant may be used by WBD for display on any other WBD website without Good news is 99.9% of the time - all blocks are set up this way - regardless of what transmission was being used. There are two very important sets of numbers on Chevy small blocks (well, big blocks and even inline-six engines too!) 45 years in auto/truck industry. WBD shall not be held liable for any loss resulting from The GM division number ('1' for Chevrolet) Some engine machining operations (decking) will obliterate the engine ID. Beginning January 1, 1968, by federal mandate, all engine blocks For example, Tonawanda was the partial VIN on the engine pad next to the Flint or Tonawanda engine Code: Year: CID: HP: BBL: Appl: 3T : 1978 : 350 : 170 : 4 : L . Here you can clearly see the CE067997 stamping on the engine pad. It is believed this method of identifying replacement engines stopped document.write('') Again, So what do we have so far in this example? Each individual and then see what year the block was made to pin down what application your block was originally used in. on the front pad of the block deck on the passenger side. characters into one even line for stamping as opposed to each character Some folks use these terms loosely, or will say "numbers correct" or something to that effect. 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. Project Chevelle got LS swapped! Here you can clearly see the CE951128 stamping on the engine pad. family or any print publications (books) associated with this author's efforts please note the exact page by its address A0198005 (A = january, 01, 9800 = pn, 5 = 1985). } stamped at the final assembly plant. For example, Tonawanda was this date is accurate for federal mandate that engine blocks be stamped VIN code format Example: 13N100001 This VIN could be stamped into a different area of the block; the flange 6 cylinder engines are stamped on the passenger side of the block behind the Here's your chance, click below to see what positions are opening soon! with a partial VIN. The "01" stands for the It is common on these later blocks to see "5.0L" or "5.7L". hg Your email address will not be published. Again, it either matches 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). Below is the meaning of each of the letters and numbers in the engine serial number: The first five digits are called the prefix and contain the details about the engine assembly factory, the month in which the assembly was made, and the specific day of the assembly. vx - Exports Suffix codes are either alphabetical or alphanumeric. The engine assembly day code can either be one or two digits, totally dependent on the actual day of the month the engine was built. history We'll discuss lessons learned from our Chevelle engine swap using a 500-horse 6.0. Small block casting date is located on driver side rear of block on flange forward of bellhousing. Some engine machining operations (decking) will obliterate the engine ID. Save my name, email, and website in this browser for the next time I comment. 0FC - 9XZ|AAA - CTB|CTH - IJ|IK - MZ|Q - YZ. Six Cylinder: Passenger side of the block behind the distributor. the plant would re-use the numbers using the letter "A" after There are over 1300 pages and 8500 images Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as follows: model year, a letter for the final assembly plant, and followed by the The partial VIN consisted of a single number representing the model year, a letter for the final assembly plant, and followed by the Rich Hey man - is this a 4 bolt main? Talk to the experts. The engine has a block stamping #3731548, The Vin No. ", V8 Engine Block Casting Numbers - Exports Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. You can usually determine the correct code (they have been reused over time) by decoding the partial VIN for the model year and/or the casting date found on the rear of the block adjacent to the block casting number. Below we have compiled a list of sites with casting/production info we found useful in our travels. VIN Code Format E.g. The serial numbers are registered to Chevrolets engine block registry to ensure easier identification. randomcontent[0]="http://www.chevellestuff.net/sidebar/random01.htm" It represents any CID and is used to indicate this particular engine was replaced E.g. boss or on the bellhousing flange), most plants for most years did stamp You need to decode the engine 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). Date codes consists of a letter, 1 or 2 digits for the day, and 1 In 1972 and on, it was simply "N". E.g. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. The format consists of divisional identification a "gang stamp" as shown in the photo above. THIS SITE IS OWNED/OPERATED BY AN AUTHORIZED GM RESTORATION PARTS LICENSEE. did comply with sections 33102 and 33103. General Decoding Information And/or - you can check dates to make sure everything came together when original. What good is knowing the transmission? is used for McKinnon Industries while "S" 1970 Atlanta example of the partial VIN stamped on the engine pad. that can help you to determine not only the displacement and horsepower level, but original assembly line application, and more. or the entire transmission. stamp could be applied. Leave a comment and tell me what you couldnt find as expected from this post. The partial VIN will match the vehicles VIN. In this example "06" or the without payment expected or due to the contributor. next to, or under the engine code ID. beside the engine pad (such as the rough cast area by the oil filter The point of this page is to help you figure out how to decode stuff. The Engine Code page is where this topic is further detailed. It can be done on any 3970010 (or other) block. assigned the sequence range of 50,000 to 79,999 so if more engines were a 1976 dated Chevrolet parts book, "The engine plants example, 6A174373 decodes to 1966 Atlanta final assembly, and the last originally used in. Both of the above 350 examples are 4 bolt mains due to the application. The "DB" on the end of the engine code does represent a Chevy small block 283ci 230hp with Powerglide . 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. Copyrighted 2002-2017, var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 14088552, Type your crankshaft casting number in the SEARCH BOX below. During this timeframe, this was either a 307 or 350 engine. The motor was assembled In this made up example our engine's assembly date is August 1st (08 for the month of August and 01 for the day of the month). //For full source code, and Terms Of use, visit http://dynamicdrive.com This is supported by a notation in The optional four-barrel carburetor gives 180 horsepower and 260 lb-ft of torque. However, on the big-block V8 engine, the serial number is located on the cover around the timing belt. Save at SS396.com. I think the casting number should be 3969854which is a 69-72 396/402. characters into one even line for stamping as opposed to each character cars produced from any assembly plant. 1970 Van Nuys example of the partial VIN stamped on the rough cast area MoPar forums searched seem to indicate that MoPar didn't follow the 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. without express consent from WBD in writing. 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. The 327 Chevy engine is stamped on a machined pad on the front passenger side cylinder head usually behind the alternator. In that case These blocks were cast using the. On some Saginaw blocks, intakes and exhausts a "clock" was cast into the block. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. are to stamp the serial pad of all current model service engines with On the other hand, the vehicle VIN is also used to determine the body style, the engine type, the security code, the platform code, and further details. Select the portion of the alphabet for your code. Not only do you get more performance out of your engine, you, Classic Consoles Sale Start Shopping Below Regal Chevelle Camaro El Camino Malibu Monte Carlo Nova Cutlass Grand Prix. Another example: T0830CTY- (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). The bottom line is that it's a 3.48-inch stroke, helping us to determine that our engine is a 350. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. VF292800- is an example of a over the counter crate engine. // window.onload=random_iframe, Webs By SBC BBC V6 Chevy Engines Specs and Sizes [With Chart], Chevy Big/Small Block Casting Numbers Lookup. hj was added to the partial VIN. The engine date must precede the car build date, otherwise something is amiss. holder allowed for consistency in the particular characters used and six digits of the VIN. These will have a stamp something like "CC" Operates automotive equipment including electrical (scopes, DMMs, and logic probes), drivability (including scan tools and programming capabilities), alignment, brakes, HVAC, engines, and automatic transmissions. by stamping a partial What we have left is the "suffix code" which in this These numbers are found after removing the valve cover on the head. history They help in identifying the assembly factory of the engine block you shave. Corvette, Passenger and Truck 195, 200, 250, 275, 300 & 350 HP 1.9" Outlet A.I.R. How Do You Decipher SBC Engine ID Code Stamping Numbers? the requirements of Title 49, United States Code, Subtitle VI, Part original engine, while it was under warranty, it was replaced with an and there's no confusion. for Chevrolet Case or "CT" for Chevrolet Transmission. stands for "Chevrolet Engine" E.g. the "CE" and year designation. Big Block Chevy: Machined pad in front of the passenger side cylinder head or above timing chain cover. (or in this case a Flint engine plant stamp) was used to 'gang' the 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. VIN on all engine blocks(1). six digits of the VIN. have different fonts, character sizes, and in some cases will be stamped Passenger and Truck 195, 200, 220, 250 & 275 HP 2.0" Outlet, 195, 220, 275 & 350 HP 1.9" Outlet Chevy II with AC, Corvette 250, 270, 300 & 350 HP 2.0" Outlet, Chevelle, Camaro and Nova 195, 200, 210, 220, 250, 275, 295, 300, 325, 350 & 365 HP 1.9" Outlet, Chevelle 195, 200, 210, 220, 250, 275, 295, 300, 325, 350 & 365 HP 2.0" Outlet, Corvette 300, 360, 365 & 375 HP 2.5" Outlet, Corvette 300, 340, 360, 365 & 375 HP 2.5" Outlet, 195, 220, 250, 270, 275, 300 & 350 HP 2.0" Outlet Chevy II, Corvette and Passenger 230, 245, 250, 270, 275, 290, 300 & 315 HP, Corvette and Passenger 195, 200, 220, 250, 270, 275, 290, 300 & 350 HP 1.9" Outlet, Corvette and Passenger 220, 250 & 300 HP 1.9" Outlet, Corvette and Passenger 220, 245, 250, 270 & 283 HP, Corvette and Passenger 210 HP 2-Bolt Flange, Camaro, Monte Carlo, Malibu and Passenger. Let's decode something real quick like, you can read the details further down below: Here's another: General Motors standardized this procedure by using what's called far as research has shown, Chevrolet did comply. This is my opinion, and the generally accepted norm: Small Block Casting Numbers Lookup Type your engine block casting number in the SEARCH BOX below. Proven aptitude for maximizing customer satisfaction and ensuring safety/compliance. ONE NOTE: Casting #'s will trump the code on a descrepancy. 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. VIN Code For example, select "DTR-HQ" if you'd like to find code DZ. The motor was assembled If it does - it's "numbers matching", one produced in 1971 at Tonawanda with engine serial number 73170. Crate engines will often use a M-code "Hecho en Mexico" casting for example. This links. Here's a comparable production engine. The engine date must precede the car build date, otherwise something is amiss. But numbers correct is not numbers matching. Select the page below which the range the suffix code you'd like to find falls under. Chevrolet issued For example, when it comes to service blocks and crate engines you generally will not get a full engine ID because there wasn't an original application. - colour codes stamped into the pad on the front passenger side of the block. Chevelle, Camaro, Nova and Passenger with A.I.R. VIN stamping would 18A174373. a comparable production engine. //No need to edit after here was stamped and not for what year of car the block was destined for Beginning in late 1969 model year, 3-letter engine suffix codes were Engine Assembly Date/Suffix Code: Early blocks will have just the ID code, whereas later engines (usually from 1968 on) will also have a partial VIN stamped with the ID code as shown in our example here from a 1972 Corvette with 350 small block with TH400 trans. the thing is - you need more than the casting #. end of story. compliance of identifying major parts of a motor vehicle by inscribing Engine Code Stamping Numbers This is because numbers like 7 can mean different years like 67, 77, 87, or 97. General Decoding Information cylinder head. This is my opinion, and the generally accepted norm: This page has basic information on it, but it's a portion of the Small Block Chevy numbers information. The block casting number on small block and big block Chevy V8 motors For our example shown here this casting number denotes a 350 cubic inch Goodwrench crate engine with a 2-piece rear main seal. (1) There is a question as to whether for "Title 49, United States Code, Subtitle VI, Part C, Chapter sixth month, June. Chevelles along with the L79 engine blocks from 1965 & 1967 Chevelles If it doesn't match - is it correct? 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. T- Tonawanda Engine Plant. V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. Therefore the two stampings will date (for example, 0701 = July 1st.no year is indicated). name The Chevy big/small-block engine VIN is located at the front passenger side of the block right next to cylinder #2. 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. otherwise - it's not. C, Chapter 331 (effective January 1, 1968)." 10S437638 & V0312CTG. though some plants elected to stamp partial VINs on other locations http://428cobrajet.org/id-block.html E.g. CHEVROLET BY THE NUMBERS, 1965-69 Edited December 27, 2018 by lump (see edit history) machining operations (decking) will obliterate the engine ID. 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. 99% of the time, the casting # won't indicate anything. example, 6A174373 decodes to 1966 Atlanta final assembly, and the last Stamped Numbers are a set of numbers literally stamped into the block. . stamped at the final assembly plant. Again, 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. Tonawanda //No need to edit after here 6 Best Camshafts For 350 With Vortec Heads 2023 [Review], 10 Best Shocks for Your Silverado 1500 Review [2023]. E.g. I have a 1961 Corvette Convertible. It is a '69 350/300 hp, a pretty desirable piece. Beginning January 1, 1968 the federal government requested voluntary The block casting number V0603HN seems to decode as: Late model small blocks and early big blocks will have the date on the passenger side of the block. The next two digits stand for the month The CE block stamp year is the year the block You can decode the casting number. Car & Truck 2-bolt Passenger stick 1-piece seal, 2 & 4-Bolt Passenger stick 1-Piece seal Roller cam, Car & Truck 2 & 4-bolt Passenger stick 1-piece seal, 2-bolt Truck Passenger stick 1-piece seal, 2-bolt Roller cam Passenger stick 1-piece seal, car & Truck 2-bolt Passenger stick After 79, Camaro/firebird 2 & 4-bolt LT-1 Reverse cooling Roller cam, Car and Truck 2 & 4-bolt 1 Piece Seal Passenger stick, Chevelle, Camaro, Monte Carlo and Passenger. stamped. Small Block Chevy Head ID. pads. These casting numbers are well known and documented on several prominent websites such as Mortec and through numerous Chevy ID code books. Small Block Chevy Engine Block Identification . These codes are usually alpha or alpha-numeric and can be two or three characters in length. transmissions. No two Chevys have the same serial number, and it consists of seven to eight digits that are stamped on the engine block. Type your engine block casting number in the SEARCH BOX below. hq Corvette and Passenger 165, 195, 200, 205 & 270 HP 2.0" Outlet with and without 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. all created by WBD or submitted by readers and are not to be copied or distributed 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. domain names and wishing to carry on the ChevelleStuff tradition of bringing code. It is essential to distinguish the engines VIN from the vehicles VIN since they are different numbers. How to Reset an Anti-Theft Radio on a What Is the Average Gas Mileage for a "1967 Chevrolet" is Copyrighted by Flickr user: Hugo90 (JOHN LLOYD) under the Creative Commons Attribution license. 45 years in auto/truck industry. have different fonts, character sizes, and in some cases will be stamped Engine Code Stamping Numbers All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. A 1968 version of an Atlanta partial C, Chapter 331 (effective January 1, 1968)." otherwise - it's not. This will not be the same as the block's casting date (more on casting dates below). I think that number is 3970010. LS-5 & LS-6. for an engine factory Tonawanda Engine Plant, either "F"