small block chevy engine code stamping numbers

If you think there is something in error, Before a federal mandate that all engine blocks be stamped with a In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped 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. was added to the partial VIN. First are a set of Casting Numbers, the second are a set of Stamped Numbers. If it doesn't match - is it correct? Chevy smallblock and big block cylinder heads have the CASTING NUMBER and the CASTING DATE located in the rocker arm valley. but if it's a 3/4 or 1 The following is what I've come up with (not sure if accurate). Morec1@aol.com. T- Tonawanda Engine Plant. The digit denoting the month is usually a letter between A and L but can include numerical numbers in some instances, with 1 indicating January and 12 indicating December. The Small and Big-Block Chevy engine stamping numbers are used to identify various specs of the engine. for "Title 49, United States Code, Subtitle VI, Part C, Chapter The small/big-block engine casting numbers are used to identify the engine block by denoting the casting number, the year of production, and the CID (cubic-inch displacement). Tonawanda The engine date must precede the car build date, otherwise something is amiss. used on the engine pad. A "two-bolt" main, or a four-bolt main. Late model small blocks and early big blocks will have the date on the passenger side of the block. I think that number is 3970010. Use of WBD name, logo and identity Quickly, A = Chevelle, F = Camaro, X = Nova. Step 1. hx by the oil filter. CTG - in 1970. RPO ZQ3, 300hp 350 in a Corvette. the use of the information contained on this website. E.g. In 68-69 model cars, the serial (VIN) quantity of the car the engine was set up in is stamped next to, or under the engine code ID. var iframeprops='width=950 height=250 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"' 3N - CDR|CE - CMJ|CMK - CUD|CUF - DTM|DTR - HQ| HR - TBS|TBT - TJS|TJT - TXB|TXC - UTT|UTU - ZY, Big Block Engine Suffix Code Menu These codes are usually alpha or alpha-numeric and can be two or three characters in length. Small Block Chevy: Machined pad in front of the passenger side cylinder head. The format consists of divisional identification model year, a letter for the final assembly plant, and followed by the distributor. This is my opinion, and the generally accepted norm: rough cast area next to the oil filter and sometimes the stamping is Decoding the ID numbers on Chevy Smallblock motors: (Info compiled Ray Buck [09/23/2000]) Since there are several numbers on the block, we need to identify the ones we're gonna use. (Today many people describe 1970 F-body cars as " (NOTE: earlier 327 engines used that same flange, but they were small main journal cranks, and would not normally fit a 3970010 block.) vx 444516- Sequential number. This is why I looked at the VIN code 1st. (1) There is a question as to whether The year is not specifically In that case Chevelle, Camaro, Nova and Passenger with A.I.R. Camaro, Z-28 and Nova 115, 130, 145, 150, 160, 165, 170, 180, 185, 200, 210, 245, 250, 255, 290, 300, 330 & 360 HP 2.0" Outlet with and without A.I.R. . General Motors standardized this procedure by using what's called sites such as Over the course of 50 years there were many different versions made. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). If it does - it's "numbers matching", Bonus: SBC BBC V6 Chevy Engines Specs and Sizes [With Chart]. It represents any CID and is used to indicate this particular engine was replaced under Warranty. the most accurate and up to date information to the Chevelle community can Save at SS396.com. http://uscode.house.gov/download/pls/49C331.txt or search the Internet assured the partial VIN stamp was uniformly done from car to car. Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)). or affixing an identifying number or symbol on major parts. of the year. What good is knowing the transmission? Six Cylinder: Passenger side of the block behind the distributor. Small Block Chevy Stamping Numbers 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.no year is indicated). (or in this case a Flint engine plant stamp) was used to 'gang' the http://uscode.house.gov/download/pls/49C331.txt or search the Internet please note the exact page by its address being individually stamped. Thanks, Lots of good info. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. = 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 . Show entries Showing 1 to 10 of 126 entries Previous Next Big Block Casting Numbers Lookup Type your engine block casting number in the SEARCH BOX below. other pieces and parts should have been on it, and check those casting #'s. of the year. Registries for Chevelle/Camaro/Nova/HHR, http://uscode.house.gov/download/pls/49C331.txt. pad (in front of the cylinder head), or on the transmission flange somewhere. Decode small block Chevy engine suffix codes with our SBC casting. 1- Chevrolet. "Numbers Matching" As is located on a ledge found at the rear of the block, most often on Our Tru-Ram Exhaust Manifolds are one of our most popular items. But if you want to know EXACTLY what Often hidden by the alterator. And/or - you can check dates to make sure everything came together when original. Talk to the experts. monte carlo. Big block on the right side of engine above the oil pan rails. } rough cast area next to the oil filter and sometimes the stamping is that can help you to determine not only the displacement and horsepower level, but original assembly line application, and more. V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. is substituted for the number "1". The . Both of the above 350 examples are 4 bolt mains due to the application. at front of block by engine head #TI220FC. or it doesn't. 0FC - 9XZ|AAA - CTB|CTH - IJ|IK - MZ|Q - YZ. stamp could be applied. originally used in. the "CE" designation for replacement Chevrolet engines did 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. one change was made in 1968. Copyrighted 2002-2017, It is essential to distinguish the engines VIN from the vehicles VIN since they are different numbers. If a customer had problems with his E.g. 1st day of the month. Where Are Chevy Small Block Casting Numbers Located? 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. 1970 S St. Louis (built Vettes & Impalas). hj I have a 1961 Corvette Convertible. 1973 - eliminates every other possiblity. He served stints as a newspaper and magazine editor in Saudi Arabia and the United Arab Emirates. Select the portion of the alphabet for your code. Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block one produced in 1971 at Tonawanda with engine serial number 73170. Again, it either matches Chevy used one to three letters of the alphabet to code the type of If you're looking at the engine code - this is already known. You can decode the casting number. 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). a rebirth of the ZL-1 engine block under part number 12370850. Beginning January 1, 1968 the federal government requested voluntary The "CE" engine code is not really . the requirements of Title 49, United States Code, Subtitle VI, Part It is believed this method of identifying replacement engines stopped The Engine Suffix Code is stamped on a block pad located immediately forward of the right hand or passenger side cylinder head. //Random iframe content- Dynamic Drive (www.dynamicdrive.com) far as research has shown, Chevrolet did comply. 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. The engine has a block stamping #3731548, The Vin No. VIN code format Example: 13N100001 beside the engine pad (such as the rough cast area by the oil filter Select the portion of the alphabet for your code. Here's were stamped with a partial VIN. WBD shall not be held liable for any loss resulting from engine assembly plants while the partial VINs (when applicable) were Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. The numbers that follow are the actual assembly date. Not to say mistakes weren't made as the person responsible had to Deciphering Chevy's engine casting numbers, date codes, and suffix stampings will help confirm just what you have in your new project car. history characters into one even line for stamping as opposed to each character Beginning January 1, 1968, by federal mandate, all engine blocks If you think there is something in error, Rich The engine date must precede the car build date, otherwise something is amiss. Note:CODE CExxxx (counter or crate engine) was used from 1968 to current year. compliance of identifying major parts of a motor vehicle by inscribing 25, 1967. Is it the original for the vehicle? These numbers are found after removing the valve cover on the head. The engine VIN also contains six digits that are used to denote the last six digits of the vehicles VIN. Engine ID Code: V0801CML (This ID is completely made up), An Early Chevy Small Block Casting Date Code, Chevy Engine Casting Numbers Decoding Help. The engine date must precede the car build date, otherwise something is amiss. it which serialized that particular engine. 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. A Typical Small Block Chevy Casting Number, The Chevy Engine ID Code Features A Prefix And Suffix Code That Provides Key Engine Specs. Some folks use these terms loosely, or will say "numbers correct" or something to that effect. //No need to edit after here Here you can clearly see the CE951128 stamping on the engine pad. On a small block GM V8, it is stamped in front of the cylinder head on the passenger side. quantity was reached the sequencing began again with 50000 but the by the oil filter. LS-5 & LS-6, Corvette 270, 365, 390 & 425 HP with and without A.I.R. For a list of assembly plants, click The motor was assembled V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. Strong background in facilitating adult education including analysis, design, development, implementation, and evaluation of training programs. Engine ID Code Example: V0101CLJ- (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) for Chevrolet Case or "CT" for Chevrolet Transmission. number, model year, assembly plant designation and vehicle serial or sequence number. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". But numbers correct is not numbers matching. I have no idea. drilling the holes is a machining operation. 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. hx Of the thousands of available suffix codes, this one shows four possible applications, ranging from a 1975 Camaro with 155HP to a 1980 Z-28 with 190 HP. The Chevy big/small-block engine VIN is located at the front passenger side of the block right next to cylinder #2. These blocks were cast using the. 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). Therefore the two stampings will Let's decode something real quick like, you can read the details further down below: Here's another: Where Are Chevy Small Block Casting Numbers Located? Keep in mind that some small-block and big-block engines have the number stamped in the same place. VIN Code Dale all created by WBD or submitted by readers and are not to be copied or distributed The engine serial number in big and small Chevy engines is denoted by seven digits, each symbolizing a specific detail. 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). this date is accurate for federal mandate that engine blocks be stamped 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. this date is accurate for federal mandate that engine blocks be stamped The only guarantee is to take off the pan and look. - Prototypes By Year (1964-1972). A CE number indicates a complete engine, or perhaps a short block. The partial VIN will match the vehicles VIN. required the numbering would start over again at 50,000 but the "CE" bellhousing. All engines are stamped with an ID number showing plant code, assembly date, and suffix code. something secret I've been working on since 2005. I have a 350 that is in my 64 Impala. Your email address will not be published. without payment expected or due to the contributor. Navigate the table of contents below to go to the part youre looking for. pads. This website is designed and maintained by Webs by Dale (WBD). stamped character was placed in a holder and secured before the engine example, 6A174373 decodes to 1966 Atlanta final assembly, and the last 3970010 "A/F/X/Y/B". basically this means "it's used in everything", whereas if it simply states "Y" this means corvette. // window.onload=random_iframe, Mac's 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. His experience ranges from legal affairs reporting to covering the Middle East. See what we're doing at Ground Up SS396.com. And you can check dates. Chevrolet issued This series of seven to eight digits begins with a letter and is stamped directly on the engine. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc cars produced from any assembly plant. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. var iframeprops='width=950 height=250 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"' Differences Between F-Body Camaro and Firebirds. As transmissions. If you're looking at the casting # information and it mentions 3970010 "A/F/X/Y/B". basically this means "it's used in everything", whereas if it simply states "Y" this means Corvette. These numbers will tell you where the engine was assembled, production date, and the suffix code. Here you can clearly see the CE067997 stamping on the engine pad. insure the numbers were changed for each vehicle as necessary. Small block casting date is located on driver side rear of block on flange forward of bellhousing. end of story. Some engine machining operations (decking) will obliterate the engine ID. history VIN Code Format holder allowed for consistency in the particular characters used and Leave a comment at the end of this post if you cannot find the information you want. iframeobj.src=randomcontent[Math.floor(Math.random()*randomcontent.length)] 14088552, Type your crankshaft casting number in the SEARCH BOX below. Another example: T0830CTY- (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). or affixing an identifying number or symbol on major parts. A0198005 (A = january, 01, 9800 = pn, 5 = 1985). } Your email address will not be published. For example, Tonawanda was This Small block casting date is located on driver side rear of block on flange forward of bellhousing. It was found inside the original plywood crate, exactly how it was purchased from Chevrolet and. In this episode, Zach and Joe discuss the swap and go for a drive to try it out. in your browser's window when reporting it. Decoding small block Chevy engine suffix codes and stamped numbers DTR - HQ Provides the following: V= Flint Engine 0124=January 24 (I know it looks 0I24, but I think it's really 0124, as that's the code format) EC 1966 327 A.I.R., glide - 275 4 Chevelle/1200 6 Best Camshafts For 350 With Vortec Heads 2023 [Review], 10 Best Shocks for Your Silverado 1500 Review [2023]. 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. date and suffix code. The Engine Code page is where this topic is further detailed. If you want more specific information, you have to look at the Stamped Numbers. Chevy used one to three letters of the alphabet to code the type of It is a direct replacement for the original equipment. This ledge is below the deck of the block and the Below we'll break down the ID codes prefix and suffix sections. Often hidden by the alterator. the driver's side. number. These numbers are often machined off when they deck a block. the partial VIN on the engine pad next to the Flint or Tonawanda engine var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1 Note the "A" in the CE0A61217 stamping on the engine pad. 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. randomcontent[0]="http://chevellestuff.net/sidebar/random01.htm" What's this A/F/X stuff? Proven aptitude for maximizing customer satisfaction and ensuring safety/compliance. In other vehicles, you may find the serial number located on the flat block just above the timing cover (in some trucks or marine blocks.). did comply with sections 33102 and 33103. sixth month, June. example is ED, a 1966 396cid/325hp for a manual transmission. stamped. 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. Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). Need all of the casting date, which should be on the bellhousing flange, same general area as casting number. randomcontent[0]="http://www.chevellestuff.net/sidebar/random01.htm" 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. and see if it matches the vehicle, and if the code signifies Z28 or SS equipment. though some plants elected to stamp partial VINs on other locations here. The casting number on my 1966 is 3858174 which is identified as a 327 ci V8 block. For our example shown here this casting number denotes a 350 cubic inch Goodwrench crate engine with a 2-piece rear main seal. 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. What we have left is the "suffix code" which in this 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). The vin code format is stamped onto most engines. example, 6A174373 decodes to 1966 Atlanta final assembly, and the last It is a '69 350/300 hp, a pretty desirable piece. Strong background in facilitating adult education including analysis, design, development, implementation, and evaluation of training programs. would be stamped with a partial VIN consisting of a single number for Quickly, A = Chevelle, F = Camaro, X = Nova. Chevelle and Passenger with and without A.I.R. The six-digit sequence number of the vehicle. home May 7, 2015: This ChevelleStuff.net ChevelleStuff Family of Websites - All Rights Reserved, Mac's The suffix codes essentially tells you what the engine was originally installed in on the assembly line. are to stamp the serial pad of all current model service engines with is strictly prohibited by law. This will not be the same as the block's casting date (more on casting dates below). Before a federal mandate that all engine blocks be stamped with a document.write('') In this example "06" or the The engine assembly date must precede the car build date (often by a few days), otherwise something is amiss. In this case the first letter "T" stands HOWEVER - the engine code MAY HINT at this fact. Save my name, email, and website in this browser for the next time I comment. This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. 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. compliance until sometime midyear, 1968. Small Block Engine Suffix Code Menu In honor of Presidents Day, celebrate all week long and save some Benjamins with Free Shipping* on orders over $199. the requirements of Title 49, United States Code, Subtitle VI, Part - Exports you might see "T0601ED 6A174373" K- McKinnon Plant. Save my name, email, and website in this browser for the next time I comment. For example, select "DTR-HQ" if you'd like to find code DZ. Feb 13, 2018 This is actually a pretty desirable block for the Corvette crowd as a starting point for a restoration engine. used on the engine pad. Date/Suffix Code: - gmh dealer codes Engine Assembly 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. Here T099 represents Tonawanda (T), June (06), 1973 (3). Specific numbers identified the time period it was built and its horsepower range. machining operations (decking) will obliterate the engine ID. It can be done on any 3970010 (or other) block. Blue Seal Certified Author of auto/truck repair information. Sometimes the engine ID code is obscured by the alternator. 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 originally used in. next to, or under the engine code ID. code. In this example "06" or the were warranty replacement engines. engine that was stamped "CE" with a 6-digit number following 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. - vin Yikes. original engine, while it was under warranty, it was replaced with an Operates automotive equipment including electrical (scopes, DMMs, and logic probes), drivability (including scan tools and programming capabilities), alignment, brakes, HVAC, engines, and automatic transmissions. 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. 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. done. This is my opinion, and the generally accepted norm: This ledge is below the deck of the block and the Engine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) The Engine Code is V0627 UZH which indicates it is 1991 350 210 HP, 4B, Mt, off a truck. partial VIN, generally, only the 396 engines from 1965, 1966 & 1967