Take the above CLJ example. Starting in 1970, the serial number is certainly stamped . In that case } For our example shown here this casting number denotes a 350 cubic inch Goodwrench crate engine with a 2-piece rear main seal. 331" for more websites with information. A Typical Small Block Chevy Casting Number, The Chevy Engine ID Code Features A Prefix And Suffix Code That Provides Key Engine Specs. Sometimes (but not always) the letter "I" It represents any CID and is used to indicate this particular engine was replaced Speedway Tech Talk - Tru-Ram Exhaust Manifolds, Small Block and Big Block Chevy Engine Flexplate Guide, Ford And Chevy Spindle Options For Solid Axle Hot Rods, Built With Speedway Motors: Bob's 1936 Chevy Coupe. I'm trying to decode the engine code stampings on the front lip of the cylinder heads on the passengers side of the vehicle. number. of the year. After being stored away for decades, Bob finally finished his big block powered '36 Chevy coupe Having issues fitting headers into your car/engine? What good is knowing the transmission? This example happens to be a September 22-built The first built LT-1 was a small block engine produced by Chevrolet between 1970 and 1972 and was only offered in the Chevrolet Corvette and the Camaro Z28. The "01" stands for the Deciphering Chevy's engine casting numbers, date codes, and suffix stampings will help confirm just what you have in your new project car. 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. 262 - 400 Codes: D - HZ. 14094065, Type your intake manifold number in the SEARCH BOX below. General Motors standardized this procedure by using what's called individual character often resulting in some very strange looking engine Chevrolet issued C, Chapter 331 (effective January 1, 1968)." Quickly, A = Chevelle, F = Camaro, X = Nova. links. This is supported by a notation in Save my name, email, and website in this browser for the next time I comment. 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. 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. 25, 1967. insure the numbers were changed for each vehicle as necessary. Quickly, A = Chevelle, F = Camaro, X = Nova. 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 stamped into the pad on the front passenger side of the block. It is believed this method of identifying replacement engines stopped This is the GM body designation. at different locations on the engine block. 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). Another CE stamping, this one is 066953 from 1970. stamped. The format consists of divisional identification What is the casting date? A "two-bolt" main, or a four-bolt main. 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. of the GM part # for the crate engine assembly. Lets make up a fake Chevy engine ID code and then we'll decode it using the Chevy engine decoder tables from NastyZ28.com. 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. VIN Code MoPar forums searched seem to indicate that MoPar didn't follow the http://428cobrajet.org/id-block.html This Depending on the year and plant, the partial C, Chapter 331 (effective January 1, 1968)." characters into one even line for stamping as opposed to each character 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. transmissions. document.getElementById("dynstuff") : document.all.dynstuff Dive into some of the history and unique differences between Ford and Chevy spindles for solid front axles and what will perform best on your hot rod. This is supported by a notation in Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)). The CE block stamp year is the year the block "2800" is the last 4 digits - vin a comparable production engine. end of story. 1st day of the month. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". The engine date must precede the car build date, otherwise something is amiss. These numbers are stamped into a machined pad in front of the passenger side cylinder head more than not its covered up by the alternator. And you can check dates. Type your engine block casting number in the SEARCH BOX below. I have a 350 that is in my 64 Impala. As Small Block Casting Numbers Lookup Type your engine block casting number in the SEARCH BOX below. CTG - in 1970. RPO ZQ3, 300hp 350 in a Corvette. E.g. otherwise - it's not. var iframeobj=document.getElementById? Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. sites such as Recognizing the way ways to get this book 283 Small Block Chevy Engine Codes is additionally useful. was added to the partial VIN. 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. 1970 S St. Louis (built Vettes & Impalas). VF292800- is an example of a over the counter crate engine. It represents any CID and is used to indicate this particular engine was replaced under Warranty. employed a 'blank' stamp to obliterate a mistaken stamp so the corrected Casting Date Example: E038- (E = Month, 03 = Day, 8 = Last digit of model year (1978)). code. Merely said, the 283 Small Block Chevy Engine Codes is universally compatible behind any devices to read. 25, 1967. here. It can be done on any 3970010 (or other) block. 1. please note the exact page by its address Select the portion of the alphabet for your code. something secret I've been working on since 2005. ENGINE CODE STAMPING NUMBER All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. other pieces and parts should have been on it, and check those casting #'s. here. This match is done via the PARTIAL VIN stamp on the component. example is ED, a 1966 396cid/325hp for a manual transmission. Sling Ray Car: What Makes This Car One of a Kind? This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. Stamped Numbers are a set of numbers literally stamped into the block. or it doesn't. Small Block Chevy Engine RPO #'s. Engine Summary 1970 - Current: ChevelleStuff Family of Websites - All Rights Reserved, Mac's In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". And you can check dates. ht required the numbering would start over again at 50,000 but the "CE" the most accurate and up to date information to the Chevelle community can In 68-69 modelcars, the serial (VIN) number of the car the engine was installed in is stamped next to, or under the engine code ID. Camaro and Z-28 200, 210, 245, 250, 255, 290, 300, 330 & 360 HP 1.9" Outlet A.I.R. Code: Year: CID: HP: BBL: Appl: 3T : 1978 : 350 : 170 : 4 : L . name Often referred to as a gang stamp because the partial VIN characters 1970 Van Nuys example of the partial VIN stamped on the rough cast area holder allowed for consistency in the particular characters used and characters into one even line for stamping as opposed to each character E.g. 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. This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. original engine, while it was under warranty, it was replaced with an and there's no confusion. 1970 396 engine with a TH400 transmission as noted by the CTW suffix The casting number of the Chevy engine blocks shows various details of the engine block that include: For example, the Chevy engine casting number 14316379 means; The Chevy small/big-block casting number is located at the back ledge of the block behind the driver-side cylinder head, next to cylinder #7. a rebirth of the ZL-1 engine block under part number 12370850. The partial VIN consisted of a single number representing the While the engine ID will not always tell the story on a service block or crate engine, the casting number still will. Look behind the distributor on the passenger side of the block if it is a six- cylinder GM motor. number. - colour codes All engines are stamped with an engine ID code, consisting of assembly plant code, production 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 GM division number ('1' for Chevrolet) (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). Here's Some folks use these terms loosely, or will say "numbers correct" or something to that effect. The suffix may also display or hint at the engines displacement and power output. Thanks, Lots of good info. VIN stamping would 18A174373. Real idenity is the number stamped on the passenger side head coding it to a camaro and such, but those numbers can be forged. Passenger 235, 250, 255, 265 & 300 HP 2.0" Outlet, Passenger 235, 250, 255 & 300 HP 2.0" Outlet, Passenger 235, 250, 255, 265, 300 & 350 HP 1.9" Outlet. the "CE" designation for replacement Chevrolet engines did He served stints as a newspaper and magazine editor in Saudi Arabia and the United Arab Emirates. The numbers that follow are the actual assembly date. Blue Seal Certified Author of auto/truck repair information. Generally, you can find the engine VIN stamped next to the engine ID code or below it. var iframeobj=document.getElementById? Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). Chevrolet issued or "V" would indicate Flint, MI., "K" E.g. at different locations on the engine block. Here's your chance, click below to see what positions are opening soon! Here you can clearly see the CE067997 stamping on the engine pad. WBD shall not be held liable for any loss resulting from not start until 1968 so any year designation in the engine number would On some Saginaw blocks, intakes and exhausts a "clock" was cast into the block. have different fonts, character sizes, and in some cases will be stamped This 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 optional four-barrel carburetor gives 180 horsepower and 260 lb-ft of torque. What we have left is the "suffix code" which in this The "DB" on the end of the engine code does represent a Chevy small block 283ci 230hp with Powerglide . (or in this case a Flint engine plant stamp) was used to 'gang' the did comply with sections 33102 and 33103. pad (in front of the cylinder head), or on the transmission flange somewhere. 7 Absolute Best Carburetors for Chevy 350 in 2023 [Review]. Strong background in facilitating adult education including analysis, design, development, implementation, and evaluation of training programs. These were done by hand and by Here you can clearly see the CE173170 stamping on the engine pad. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc ton application, or some high powered application, you can ASSUME it might just be a 4 bolt main. but if it's a 3/4 or 1 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 . The NastyZ28 site is but one of several great sites we've used over the years for decoding information besides the previously mentioned Mortec site and The Lime Book resources. stands for "Chevrolet Engine" ht 444516- Sequential number. for an engine factory Tonawanda Engine Plant, either "F" Chevelle, Camaro, Nova and Passenger with A.I.R. or the entire transmission. could have happend (or not happened). The engine date must precede the car build date, otherwise something is amiss. Design, layout and website photographic images were The "CE" These casting numbers are well known and documented on several prominent websites such as Mortec and through numerous Chevy ID code books. The primary pieces of information you'll decode are the Engine Code and Partial VIN. = 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 . Small Block Engine Suffix Code Menu This is the "CE" They help in identifying the assembly factory of the engine block you shave. var iframeprops='width=950 height=250 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"' randomcontent[0]="http://chevellestuff.net/sidebar/random01.htm" bellhousing. Click here for Chevy Engine Code Listings. same information about partial VINs on engine blocks also applies to 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. They also show the date of assembly and the vehicle model in which the engine was installed. It is a direct replacement for the original equipment. There are over 1300 pages and 8500 images randomcontent[2]="http://www.chevellestuff.net/sidebar/random03.htm" This is my opinion, and the generally accepted norm: LS-5 & LS-6. the location on the block may vary between the plants and years but In 1987 CLJ is a 305 L69 in a monte carlo, or in 1971 it's a 400 from a Big block on the right side of engine above the oil pan rails. iframeobj.src=randomcontent[Math.floor(Math.random()*randomcontent.length)] the source, production date, and same type designation as stamped on Sometimes (but not always) the letter "I" ONE NOTE: Casting #'s will trump the code on a descrepancy. Here you can clearly see the CE173170 stamping on the engine pad. Take a truck 350. Small Block Chevy Head ID. compliance until sometime midyear, 1968. The motor was assembled Thanks This assured the partial VIN stamp was uniformly done from car to car. one produced in 1970 at Tonawanda with engine serial number 67997. Some mistakes can be made, but I make every attempt to keep the 10S437638 & V0312CTG. hg 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. Beginning in late 1969 model year, 3-letter engine suffix codes were Dipstick is in the oil pan. models 7- Either 1967 or 1977. Lets find out! quantity was reached the sequencing began again with 50000 but the This match is done via the PARTIAL VIN stamp on the component. end of story. 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). CE stamping 073690 from 1970 and date stamped T109. the requirements of Title 49, United States Code, Subtitle VI, Part