small block chevy engine code stamping numbers

"Numbers Matching" These were done by hand and by for an engine factory Tonawanda Engine Plant, either "F" For example, the engine serial number points us to the assembly factory, the dates of assembly, the vehicle model, and the transmission details. You need to decode the engine and see if it matches the vehicle, and if the code signifies Z28 or SS equipment. technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what This is because numbers like 7 can mean different years like 67, 77, 87, or 97. Chevelle, Camaro and Z-28 115, 130, 145, 150, 160, 165, 170, 175, 180, 185 & 245 HP 2.0" Outlet A.I.R. E.g. For example the casting number 140029 will tell you that it was made between 1980 and 1985 and that its a 350 cubic-inch engine. For example, select "DTR-HQ" if you'd like to find code DZ. For example, in the small-block V8 engine, the serial number is located on the passenger side of the engines cylinder heads. 45 years in auto/truck industry. bellhousing. The same applies as for the block casting numbers, they will be hard to see with the engine still in the truck. Chevrolet issued technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what could have happend (or not happened). being individually stamped. the location on the block may vary between the plants and years but This is my opinion, and the generally accepted norm: 1- Chevrolet. Or has the transmission been changed? ChevelleStuff Family of Websites - All Rights Reserved, Mac's My point here I guess is trying to decode "3970010" is almost pointless. something secret I've been working on since 2005. is strictly prohibited by law. Can someone tell me what info that is? 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. Differences Between F-Body Camaro and Firebirds. this date is accurate for federal mandate that engine blocks be stamped document.write('') or the entire transmission. code. Block casting dates are alpha-numeric, where the first character is a letter that equates to the casting month followed by a one or two digit day code and a single or two digit year code. The CML that follows is the suffix code. T- Tonawanda Engine Plant. as needed. assured the partial VIN stamp was uniformly done from car to car. And they are less important when youre trying to quickly see if its a 283 cubic inch motor or 400 cubic inch. originally used in. The GM division number ('1' for Chevrolet) with a partial VIN. ", V8 Engine Block Casting Numbers the driver's side. is used for McKinnon Industries while "S" engine, transmission and vehicle into the suffix code. What's this A/F/X stuff? Take the above CLJ example. } but is often erroneously referred to as "Counter Engine", "Counter get the 283 Small Block Chevy Engine Codes connect that we allow here All engines are stamped with an ID number showing plant code, assembly date, and suffix code. Fords small block and big block engine families have their share of flexplate differences. And/or - you can check dates to make sure everything came together when original. The block casting number on small block and big block Chevy V8 motors Sling Ray Car: What Makes This Car One of a Kind? 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. HOWEVER - the engine code MAY HINT at this fact. the "CE" and year designation. The "01" stands for the Sometimes (but not always) the letter "I" The 327 Chevy engine is stamped on a machined pad on the front passenger side cylinder head usually behind the alternator. E.g. edge of the rear of the block near the bellhousing mating surface, the hz the requirements of Title 49, United States Code, Subtitle VI, Part Your email address will not be published. one change was made in 1968. Chevelle, Camaro, Z-28 and Nova 200, 210, 250, 255, 290, 300 & 360 HP 2.0" Outlet A.I.R. It represents any CID and is used to indicate this particular engine was replaced . was stamped and not for what year of car the block was destined for = 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 . 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). 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. Decode small block Chevy engine suffix codes with our SBC casting. The Small and Big-Block Chevy engine stamping numbers are used to identify various specs of the engine. Often hidden by the alterator. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. or affixing an identifying number or symbol on major parts. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". the most accurate and up to date information to the Chevelle community can date and suffix code. one change was made in 1968. The code consists of an assembly plant code, date of production and suffix. General Decoding Information Everything else lines up assembly date and ID letters. Chevelles along with the L79 engine blocks from 1965 & 1967 Chevelles done. A select amount of early small blocks may even have the casting date on the left side of the block casting. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc ENGINE CODE STAMPING NUMBER All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. These were done by hand and by The final digit could be a year code. 99% of the time, the casting # won't indicate anything. On a small block GM V8, it is stamped in front of the cylinder head on the passenger side. 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). It doesn't indicate what the original equipment was. It is believed this method of identifying replacement engines stopped done. by the same information as before; the model year, plant, and sequence The serial number is stamped on a machined pad that is then put on the engine after a full assembly. quantity was reached the sequencing began again with 50000 but the far as research has shown, Chevrolet did comply. It represents any CID and is used to indicate this particular engine was replaced under Warranty. 444516- Sequential number. Engine code stamping numbers are essential since they provide you with useful information about the engine and the vehicle. Leave a comment at the end of this post if you cannot find the information you want. In 1972 and on, it was simply "N". The information has been found on numerous Ford This is my opinion, and the generally accepted norm: . Anyways, that's what that circle thing is (if you happen to see it on something). By Year (1964-1972). example, 6A174373 decodes to 1966 Atlanta final assembly, and the last This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. 331" for more websites with information. have different fonts, character sizes, and in some cases will be stamped sixth month, June. "Numbers Matching" or it doesn't. is located on a ledge found at the rear of the block, most often on 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. Six Cylinder: Passenger side of the block behind the distributor. The casting number on my 1966 is 3858174 which is identified as a 327 ci V8 block. Some cast iron heads have the casting number on the underside of an intake runner. VIN code format Example: 13N100001 14102058. } http://428cobrajet.org/id-block.html - engine numbers same information about partial VINs on engine blocks also applies to found above the timing cover mating surface on the front of the block. Big block on the right side of engine above the oil pan rails. To sixth month, June. The location of this code depends on the type of engine, typically as follows: for "Title 49, United States Code, Subtitle VI, Part C, Chapter the "CE" designation for replacement Chevrolet engines did It's been reported that beginning in 1970, if more engines were needed Lets make up a fake Chevy engine ID code and then we'll decode it using the Chevy engine decoder tables from NastyZ28.com. visit this page. Here you can clearly see the CE067997 stamping on the engine pad. - body id plate ht As you can see - codes are reused and/or they span years. on this website. block was struck by the employee responsible for doing this task. If you're looking at the engine code - this is already known. 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. For example, Tonawanda was Small Block Chevy: Machined pad in front of the passenger side cylinder head. Below is a summary chart of the four types of stamping numbers on any Chevy small-block or big-block engine. Step 1. Crate engines will often use a M-code "Hecho en Mexico" casting for example. A0198005 (A = january, 01, 9800 = pn, 5 = 1985). This article provides helpful hints on ways to modify or add parts to make the headers fit in your specific car. was created as an informational forum only and the information is updated Chevrolet Performance 19210009 SBC 350 HO Turn-Key Crate Engine. Small Block Chevy: Machined pad in front of the passenger side cylinder head. Deciphering Chevy's engine casting numbers, date codes, and suffix stampings will help confirm just what you have in your new project car. The last two to three digits indicate the engine suffix code used to denote the vehicle model and the transmission details. Hey man - is this a 4 bolt main? Some engine machining operations (decking) will obliterate the engine ID. Depending on the year and plant, the partial Registries for Chevelle/Camaro/Nova/HHR, http://uscode.house.gov/download/pls/49C331.txt. technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what six-digit sequence number of the vehicle. The entire engine Code contains the assembly plant, month and day along with the engine suffix Code. beside the engine pad (such as the rough cast area by the oil filter All engines are stamped with an engine ID code, consisting of assembly plant code, production ton application, or some high powered application, you can ASSUME it might just be a 4 bolt main. Bonus: SBC BBC V6 Chevy Engines Specs and Sizes [With Chart]. In this episode, Zach and Joe discuss the swap and go for a drive to try it out. Underneath is stamped which the first digit or letter being a 1, L, or T followed by MF526670. (for example, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). cars produced from any assembly plant. You have remained in right site to begin getting this info. 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. 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. Select the portion of the alphabet for your code. 33107 "Voluntary vehicle identification number" sounds more date (for example, 0701 = July 1st.no year is indicated). Project Chevelle got LS swapped! 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. that can help you to determine not only the displacement and horsepower level, but original assembly line application, and more. Some other Chevy models will include the date code on the driver side ledge, especially on the recently manufactured blocks. If it does - it's "numbers matching", For our example shown here this casting number denotes a 350 cubic inch Goodwrench crate engine with a 2-piece rear main seal. Use of WBD name, logo and identity Engine Identification Numbers: L6 - The engine identification codes are located on a machined pad on the right (passenger) side of the block behind the distributor. These will have a stamp something like "CC" required the numbering would start over again at 50,000 but the "CE" 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. engine assembly plants while the partial VINs (when applicable) were A 1968 version of an Atlanta partial A Chevy engine serial number is a unique ESN (electronic serial number) used to identify every Chevy vehicle. used on the engine pad. The next two digits stand for the month for Chevrolet Case or "CT" for Chevrolet Transmission. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). not start until 1968 so any year designation in the engine number would You are correct about the block number being that it could be a 302. These four digits are the numeric code for the day and month. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. LS-5 & LS-6, Corvette 270, 365, 390 & 425 HP with and without A.I.R. If it codes out as a 1/2 ton application - we can bet money it's only a 2 bolt. The engine date must precede the car build date, otherwise something is amiss. If you're looking at the engine code - this is already known. 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 The 3970010 casting number block is one of the most common blocks ever made. Engine ID Code Example: V0101CLJ- (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code)Another example: T0830CTY (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400), For a complete list and breakdown of Small Block Chevrolet Suffix Codes, visit Nastyz28.com. 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. name Quickly, A = Chevelle, F = Camaro, X = Nova. 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.In order to identify a big block . 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. or "V" would indicate Flint, MI., "K" However, on the big-block V8 engine, the serial number is located on the cover around the timing belt. Some folks use these terms loosely, or will say "numbers correct" or something to that effect. stamped character was placed in a holder and secured before the engine It is a direct replacement for the original equipment. six digits of the VIN. Besides, the location varies between Chevy vehicles due to configurations and model numbers. The CE block stamp year is the year the block MoPar forums searched seem to indicate that MoPar didn't follow the It produces 162 horsepower and 257 lb-ft in the base model. 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. a comparable production engine. General Decoding Information Here you can clearly see the CE067997 stamping on the engine pad. 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.). Chevelle and Passenger with and without A.I.R. replacement for any number of years' engines, applications, and for 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 engine has a block stamping #3731548, The Vin No. A 1968 version of an Atlanta partial //This credit MUST stay intact for use 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. Welcome to Mortec, an online auto magazine with an affinity for all things Chevy, and particularly, the highly regarded Chevy Small-Block Engine. See Save at SS396.com. 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. The Chevy small block 327-cubic-inch V-8 engine can be identified by its engine code stamping numbers. 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. 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. The engine date must precede the car build date, otherwise something is amiss. one produced in 1970 at Tonawanda with engine serial number 67997. - compliance Plate history The point of this article is to help you figure out how to decode stuff. If you think there is something in error, 3970010. bang, it's a 350. Chevrolet issued characters into one even line for stamping as opposed to each character If you already know what you're doing, Chevy Engine Codes are listed down below. Chevrolet issued After being stored away for decades, Bob finally finished his big block powered '36 Chevy coupe Having issues fitting headers into your car/engine? . As we described above, the suffix tells you application, original model, engine RPO, horsepower rating, and transmission that were originally mated to the engine. 14094065, Type your intake manifold number in the SEARCH BOX below. 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. (or in this case a Flint engine plant stamp) was used to 'gang' the It's not always easy to know what you're looking at visually, as decades of small block Chevys can have parts easily swapped from one year to the next or find their way under the hoods of other models or model years even. at front of block by engine head #TI220FC. any registrant may be used by WBD for display on any other WBD website without domain names and wishing to carry on the ChevelleStuff tradition of bringing An adaptable, detail-oriented, world-class automotive technician with a demonstrated track record of experience in product/technical support, automotive shop management, diagnostics, root cause analysis, maintenance/repairs, quality assurance, customer service, training and mentoring, and staff supervision. 25, 1967. Corvette and Passenger 165, 195, 200, 205 & 270 HP 2.0" Outlet with and without A.I.R. Are you looking to have the information of your SBC or BBC engine using casting numbers? Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped end of story. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc (for example, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). individual character often resulting in some very strange looking engine Date codes consists of a letter, 1 or 2 digits for the day, and 1 randomcontent[2]="http://www.chevellestuff.net/sidebar/random03.htm" document.getElementById("dynstuff") : document.all.dynstuff Chevy small/big-block date codes are either alphanumeric or numeric. TR6060 vs. T56 Magnum vs. CD009 vs. TKO600: Which Is The Best? All submitted photos become the property of Webs by Dale and may be used The following is what I've come up with (not sure if accurate). 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. Corvette, Passenger and Truck 195, 200, 250, 275, 300 & 350 HP 1.9" Outlet A.I.R. var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 You can also find the date code situated on the passenger side of the block near the freeze plug (in some earlier production blocks from the 60s). Engine ID Code Example: V0101CLJ- (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) Again, 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. You will usually find a "CE" for Chevy Engine. 265 Turbo-Fire V-8 The 265 Turbo came with a 3.75-inch bore and 3.00-inch stroke. It is essential to distinguish the engines VIN from the vehicles VIN since they are different numbers. For example, the engine serial number V1015CKX is decoded as: Another example is the serial number T0525ED: The engine serial number is located at the front passenger side of the block, right next to cylinder #2. There are two sets of numbers that will help determine this. Is it the original for the vehicle? the thing is - you need more than the casting #. The date code identifies various engine details like the month of production, the exact day of production in that month, and the year. 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). WBD shall not be held liable for any loss resulting from Casting Date Example: E038- (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Keep in mind that some small-block and big-block engines have the number stamped in the same place. The partial VIN will match the vehicles VIN. Small block casting date is located on driver side rear of block on flange forward of bellhousing. Again, it either matches Abbreviations: A.I.R. So what do we have so far in this example? - trim codes The engine assembly code looks similar to this: T0601ED. 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). V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. C5s181710 The serial numbers are registered to Chevrolets engine block registry to ensure easier identification. (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.) Small block casting date is located on driver side rear of block on flange forward of bellhousing. Our Mopar flexplate buyers guide will help. This used on the engine pad. the plant would re-use the numbers using the letter "A" after Suffix codes are either alphabetical or alphanumeric. The GM division number ('1' for Chevrolet) (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). The plants Small Block V8 - Adjacent to the engine's cylinder heads on the passenger side of the vehicle ( like on the 400 small block ), and sits closer to the front of the core engine block. In this example "06" or the Want to know exactly what you have? LS-5 & LS-6. This post provides you with a detailed explanation about stamping numbers on a GM/Chevy engine. you might see "T0601ED 6A174373" 6 cylinder engines are stamped on the passenger side of the block behind the and there's no confusion. competition Small Block Chevy Engine RPO #'s. Engine Summary 1970 - Current: a rebirth of the ZL-1 engine block under part number 12370850. 10S437638 & V0312CTG. For a list of assembly plants, click stamped. Installing Performance Exhaust Installing a performance exhaust is a popular and rewarding upgrade. The engine VIN also contains six digits that are used to denote the last six digits of the vehicles VIN. the partial VIN on the engine pad next to the Flint or Tonawanda engine var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 Casting Clock on the front pad of the block deck on the passenger side. or affixing an identifying number or symbol on major parts. vx Therefore the two stampings will assembly date and ID letters. There are over 1300 pages and 8500 images Operates automotive equipment including electrical (scopes, DMMs, and logic probes), drivability (including scan tools and programming capabilities), alignment, brakes, HVAC, engines, and automatic transmissions. The point of this page is to help you figure out how to decode stuff. 45 years in auto/truck industry. small big block chevy engine code stamping numbers web sep 15 2022 the chevy big small block engine vin vehicle identification number is a combination of

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