The location of this code depends on the type of engine, as follows: Small Block Chevy: Machined pad in front of the passenger side cylinder head. 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.). 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). a comparable production engine. 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. Starting in 1970, the serial number is certainly stamped . It's been reported that beginning in 1970, if more engines were needed All these are identified here. This - gmh dealer codes The vehicle identification number is stamped next to the engine code number with model year, plant identification and vehicle serial number. Well show you what to look for in this buyers guide. other pieces and parts should have been on it, and check those casting #'s. If those numbers are missing or look funky I would not pay any big bucks for it. 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. can accomodate a pilot bearing. There is another type of stamping found on some blocks. This website is designed and maintained by Webs by Dale (WBD). The plant, date, and engine ID codes were stamped at the respective C, Chapter 331 (effective January 1, 1968)." history We'll discuss lessons learned from our Chevelle engine swap using a 500-horse 6.0. 14102058 Leave a comment at the end of this post if you cannot find the information you want. - engine numbers Late model small blocks and early big blocks will have the date on the passenger side of the block. HOWEVER - the engine code MAY HINT at this fact. E.g. Big Block Chevy: Machined pad in front of the passenger side cylinder head or above timing chain cover. This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. 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. Please take a look at their locations and denotations since they are essential for anyone who wants to perform engine swaps and design modifications. ", V8 Engine Block Casting Numbers = 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 . 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. Specific numbers identified the time period it was built and its horsepower range. 1st day of the month. name was added to the partial VIN. Chevelle and Passenger with and without A.I.R. 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 There are two very important sets of numbers on Chevy small blocks (well, big blocks and even inline-six engines too!) you might see "T0601ED 6A174373" 1970 396 engine with a TH400 transmission as noted by the CTW suffix engine that was stamped "CE" with a 6-digit number following If it doesn't match - is it correct? Each individual 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. Small Block Chevy: Machined pad in front of the passenger side cylinder head. This ledge is below the deck of the block and the assigned the sequence range of 50,000 to 79,999 so if more engines were have different fonts, character sizes, and in some cases will be stamped E.g. var iframeprops='width=950 height=250 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"' } ONE NOTE: Casting #'s will trump the code on a descrepancy. MT (or Manual transmission) IMPLIES - the boss (or the pivot itself) for the clutch Z-bar is present and threaded and the crankshaft Note the "A" in the CE0A61217 stamping on the engine pad. is strictly prohibited by law. Below we have compiled a list of sites with casting/production info we found useful in our travels. // window.onload=random_iframe, Mac's Engine Code Stamping Numbers the location on the block may vary between the plants and years but a 1976 dated Chevrolet parts book, "The engine plants 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 nice clean LT1 in a 1971 Corvette It is believed this method of identifying replacement engines stopped All submitted photos become the property of Webs by Dale and may be used beside the engine pad (such as the rough cast area by the oil filter under Warranty. Below is a summary chart of the four types of stamping numbers on any Chevy small-block or big-block engine. You might see something like this "CE056789" 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). cylinder head. Small/big-block Chevy Engine code stamping numbers include the engine serial number (ID code), engine VIN, block casting number, and block date code. You have remained in right site to begin getting this info. Required fields are marked *. 7- Either 1967 or 1977. pads. The engine could use a stock 426 Hemi block, but the block that was used had none of the machining done for the lifters or any other associated pieces. hz same information about partial VINs on engine blocks also applies to The partial VIN will match the vehicles VIN. In this example "06" or the Does that meaning anything to you that will Id the engine? that can help you to determine not only the displacement and horsepower level, but original assembly line application, and more. I have a 350 that is in my 64 Impala. 45 years in auto/truck industry. 1973 - eliminates every other possiblity. ledge forms the mating surface between the block and the transmission or affixing an identifying number or symbol on major parts. the location on the block may vary between the plants and years but this date is accurate for federal mandate that engine blocks be stamped You need to decode the engine Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block Where Are Chevy Small Block Casting Numbers Located? or it doesn't. without express consent from WBD in writing. Select the portion of the alphabet for your code. The engine VIN also contains six digits that are used to denote the last six digits of the vehicles VIN. In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped This post provides you with a detailed explanation about stamping numbers on a GM/Chevy engine. This is the "CE" The code consists of an assembly plant code, date of production and suffix. Sometimes (but not always) the letter "I" Post a picture of the stamping on the front pad of the block and we can take a look at that. one produced in 1970 at Tonawanda with engine serial number 67997. The bottom line is that it's a 3.48-inch stroke, helping us to determine that our engine is a 350. Operates automotive equipment including electrical (scopes, DMMs, and logic probes), drivability (including scan tools and programming capabilities), alignment, brakes, HVAC, engines, and automatic transmissions. See For example, select "DTR-HQ" if you'd like to find code DZ. The "01" stands for the technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what - 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. Operates automotive equipment including electrical (scopes, DMMs, and logic probes), drivability (including scan tools and programming capabilities), alignment, brakes, HVAC, engines, and automatic transmissions. as follows: if (ie||dom){ 14102058. You might see something like this "CE056789" of the year. were warranty replacement engines. VIN could be stamped into a different area of the block; the flange //Specify IFRAME display attributes It contains information about the vehicles assembly, power output figures, the make and model of the Chevy vehicle, as well as the engine displacement. six-digit sequence number of the vehicle. otherwise - it's not. prefix would become "CExA" where 'x' is the year such as CE0A50000. var iframeobj=document.getElementById? What we have left is the "suffix code" which in this (or in this case a Flint engine plant stamp) was used to 'gang' the This Block Carries A GM Goodwrench 350 Crate Engine Casting Number. The "CE" var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1 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 Again, it either matches Hey man - is this a 4 bolt main? originally used in. As Here you can clearly see the CE067997 stamping on the engine pad. 14094065, Type your intake manifold number in the SEARCH BOX below. 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). sites such as (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). The point of this page is to help you figure out how to decode stuff. models All engines are stamped with an engine ID code, consisting of assembly plant code, production The folks over at NastyZ28.com have managed to compile quite a few Chevy code databases online for small and big block V8 engines, so if you want to dig into your small block a bit more, give them a look. next to, or under the engine code ID. Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). 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. The plants Often hidden by the alterator. date and suffix code. The 3970010 casting number block is one of the most common blocks ever made. model year, a letter for the final assembly plant, and followed by the THIS SITE IS OWNED/OPERATED BY AN AUTHORIZED GM RESTORATION PARTS LICENSEE. //Random iframe content- Dynamic Drive (www.dynamicdrive.com) number. QUICKLY IDENTIFY A CHEVY ENGINE CLICK HERE - for decoding engine codes. Small Block Casting Numbers Lookup Type your engine block casting number in the SEARCH BOX below. at different locations on the engine block. Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as follows: was stamped and not for what year of car the block was destined for The point of this article is to help you figure out how to decode stuff. characters into one even line for stamping as opposed to each character 1970 396 engine with a TH400 transmission as noted by the CTW suffix Sometimes (but not always) the letter "I" Beginning in late 1969 model year, 3-letter engine suffix codes were //Specify random URLs to display inside iframe hx Bonus: SBC BBC V6 Chevy Engines Specs and Sizes [With Chart]. Chevy 327 Engine Identification, Best Small Blocks: #1. var iframeobj=document.getElementById? For example, the engine serial number points us to the assembly factory, the dates of assembly, the vehicle model, and the transmission details. 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. VIN Code Format original engine, while it was under warranty, it was replaced with an Chevy small/big-block date codes are either alphanumeric or numeric. 3970010. bang, it's a 350. //For full source code, and Terms Of use, visit http://dynamicdrive.com I think that number is 3970010. document.getElementById("dynstuff") : document.all.dynstuff There is another type of stamping found on some blocks. holder allowed for consistency in the particular characters used and What is the casting date? E.g. Chevelle, Camaro, Z-28 and Nova200, 210, 250, 255, 290, 300 & 360 HP 1.9" Outlet A.I.R. is used for McKinnon Industries while "S" Six Cylinder: Passenger side of the block behind the distributor. In 1972, plant codes changed to reflect the VIN code. So what do we have so far in this example? The only guarantee is to take off the pan and look. otherwise - it's not. 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. Corvette, Passenger and Truck 195, 200, 250, 275, 300 & 350 HP 1.9" Outlet A.I.R. by the same information as before; the model year, plant, and sequence MoPar forums searched seem to indicate that MoPar didn't follow the // window.onload=random_iframe, Webs By Often hidden by the alterator. That eliminates the 400 and 305 possibilities. The block casting number V0603HN seems to decode as: 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. For example, select "DTR-HQ" if you'd like to find code DZ. Use of WBD name, logo and identity 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. by the same information as before; the model year, plant, and sequence C5s181710 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. The format consists of divisional identification number, model year, assembly plant designation and vehicle serial or sequence number. 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 boss or on the bellhousing flange), most plants for most years did stamp In 1987 CLJ is a 305 L69 in a monte carlo, or in 1971 it's a 400 from a The location of this code depends on the type of engine, typically as follows: E.g. Date codes consists of a letter, 1 or 2 digits for the day, and 1 here. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. The engine assembly code looks similar to this: T0601ED. The vin code format is stamped onto most engines. Not to say mistakes weren't made as the person responsible had to The numbers that follow are the actual assembly date. 10S437638 & V0312CTG. Registries for Chevelle/Camaro/Nova/HHR, http://uscode.house.gov/download/pls/49C331.txt. Engine Assembly ht .1NN179056 can you help.thanks, Your email address will not be published. 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. Not to say mistakes weren't made as the person responsible had to If you already know what you're doing, Chevy Engine Codes are listed down below. all created by WBD or submitted by readers and are not to be copied or distributed Good news is 99.9% of the time - all blocks are set up this way - regardless of what transmission was being used. but is often erroneously referred to as "Counter Engine", "Counter engine, transmission and vehicle into the suffix code. competition Clydeburge@gmail.com 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. It is a direct replacement for the original equipment. you might see "T0601ED 6A174373" stamped character was placed in a holder and secured before the engine was added to the partial VIN. 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. history in your browser's window when reporting it. employed a 'blank' stamp to obliterate a mistaken stamp so the corrected pads. How Do You Decipher SBC Engine ID Code Stamping Numbers? The engine assembly date must precede the car build date (often by a few days), otherwise something is amiss. vehicle identification 1970 Van Nuys example of the partial VIN stamped on the rough cast area 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. engine assembly plants while the partial VINs (when applicable) were These two numbers are the casting number and engine ID code. here. 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. sixth month, June. 6 cylinder engines are stamped on the passenger side of the block behind the After being stored away for decades, Bob finally finished his big block powered '36 Chevy coupe Having issues fitting headers into your car/engine? The plant, date, and engine ID codes were stamped at the respective be for 1968 and later. 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 most accurate and up to date information to the Chevelle community can (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.) found above the timing cover mating surface on the front of the block. General Motors standardized this procedure by using what's called Corvette 190, 195, 200, 235, 255, 300, 330 & 350 HP 1.9" Outlet A.I.R. All engines are stamped with an ID number showing plant code, assembly date, and suffix code. compliance of identifying major parts of a motor vehicle by inscribing 3970010 "A/F/X/Y/B". basically this means "it's used in everything", whereas if it simply states "Y" this means corvette. randomcontent[0]="http://chevellestuff.net/sidebar/random01.htm" 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. In this case the first letter "T" stands - body id plate Our Tru-Ram Exhaust Manifolds are one of our most popular items. compliance until sometime midyear, 1968. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. Project Chevelle got LS swapped! same information about partial VINs on engine blocks also applies to If it doesn't match - is it correct? required the numbering would start over again at 50,000 but the "CE" were warranty replacement engines. This list of codes is a summarization, it is not complete nor all inclusive. Suffix codes are either alphabetical or alphanumeric. 4xxx is the Corvette Range. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc Small Block Chevy: Machined pad in front of the passenger side cylinder head. VIN code format Example: 13N100001 In this episode, Zach and Joe discuss the swap and go for a drive to try it out. the source, production date, and same type designation as stamped on 2014 2018 Impala Water in Trunk: Why, What to Do? This transmissions. details accurate. 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. Engine code stamping numbers are essential since they provide you with useful information about the engine and the vehicle. Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400). So when the arguement over 305, 350 or 400 comes up now you look at the casting #. 1970 S St. Louis (built Vettes & Impalas). Engine RPO Numbers: These are also located on the drivers side of the engine, at the back of the head on the transmission mounting flange. The prefix portion of the ID code tells you the engine assembly plant code, and the engine's assembly were stamped with a partial VIN. individual character often resulting in some very strange looking engine Block casting numbers for small block Chevrolet V8 engines (265-283-327-350-400). home Morec1@aol.com. A select amount of early small blocks may even have the casting date on the left side of the block casting. That means there are literally millions of these Small Blocks out there. V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. 0FC - 9XZ|AAA - CTB|CTH - IJ|IK - MZ|Q - YZ. code. Select the portion of the alphabet for your code. This is supported by a notation in Chevrolet issued Leave a comment at the end of this post if you cannot find the information you want. "Main Caps" is the number of bolts holding the cap. stating, "Starting in 1967 for the 1968 model year, Ford began . 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). The casting number on Chevy V8's is located on the drivers side of the engine where the block is connected to the bellhousing. The GM division number ('1' for Chevrolet) Engine Assembly Date/Suffix Code: Depending on the year and plant, the partial Engine Code Stamping Numbers. 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. http://uscode.house.gov/download/pls/49C331.txt or search the Internet partial VIN, generally, only the 396 engines from 1965, 1966 & 1967 Chevelle, Camaro & Z-28 200, 210, 220, 250, 275, 290, 325 & 350 HP 1.9" Outlet A.I.R. If a customer had problems with his and see if it matches the vehicle, and if the code signifies Z28 or SS equipment. code. Reading section His experience ranges from legal affairs reporting to covering the Middle East. Navigate to the type of casting number you want in the table of contents below to lookup it up. Let's decode something real quick like, you can read the details further down below: Here's another: E.g. digit for the year such as J 25 7 would be October Here T063 represents Tonawanda (T), June (06), 1973 (3). Small Block Engine Suffix Code Menu transmissions. 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). Big Block Chevy: Above timing chain cover. "Numbers Matching" 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. It's a 350. You need to decode the engine for an engine factory Tonawanda Engine Plant, either "F" Chevelle, Camaro and Z-28 115, 130, 145, 150, 160, 165, 170, 175, 180, 185 & 245 HP 2.0" Outlet A.I.R. 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. Often hidden by the alterator. It represents any CID and is used to indicate this particular engine was replaced Besides, the location varies between Chevy vehicles due to configurations and model numbers. This will be denoted by a single digit for the last year of a decade (1966=6, and so on). the partial VIN on the engine pad next to the Flint or Tonawanda engine They help in identifying the assembly factory of the engine block you shave. code. These were done by hand and by would be stamped with a partial VIN consisting of a single number for Required fields are marked *. Some engine 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. something secret I've been working on since 2005. Casting Date Example: E038 (E = Month, 03 = Day, 8 = Last digit of model year (1978)). 444516- Sequential number. By Year (1964-1972). ENGINE CODE STAMPING NUMBER All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. Can you tell me what year this engine is 6 cylinder engines are stamped on the passenger side of the . For example, "NOR" = Norwood before 1972. var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1 the "CE" and year designation. for Chevrolet Case or "CT" for Chevrolet Transmission. As the name infers, the casting number is cast into the block when the block itself is cast. Submitted photos by like this was not mandated but was voluntary to comply as long as they by stamping a partial It can be done on any 3970010 (or other) block. 262 - 400 Codes: D - HZ. Six Cylinder: Passenger side of the block behind the distributor. 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. Chevelle, Camaro and Nova 200, 210, 250, 255, 290 & 300 HP 2.0" Outlet. If you're looking at the engine code - this is already known. sites such as could have happend (or not happened). For our example shown here this casting number denotes a 350 cubic inch Goodwrench crate engine with a 2-piece rear main seal. Design, layout and website photographic images were Well help you determine the correct flexplate for your Chevy engine in this buyers guide. 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 Engine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) May 7, 2015: This ChevelleStuff.net This match is done via the PARTIAL VIN stamp on the component. This match is done via the PARTIAL VIN stamp on the component. rough cast area next to the oil filter and sometimes the stamping is stamped. 1- Chevrolet. The partial VIN will match the vehicles VIN. The Chevy small block 327-cubic-inch V-8 engine can be identified by its engine code stamping numbers. Again, it either matches 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). stands for "Chevrolet Engine" 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. Quickly, A = Chevelle, F = Camaro, X = Nova. The Chevy engine date codes are denoted as follows: 1st digit = month; The next 1 or 2 digits = date The last number = year An example of such a date code is the A72 which means; A = January 7 = 7th 2 = 1962, 1972, 1982, or 1992 Another example is the C106 which means; C = March 10 = 10th 7 = 1966, 1976, 1986, or 1996 VF292800 - is an example of a over the counter crate engine. iframeobj.src=randomcontent[Math.floor(Math.random()*randomcontent.length)] Chevelles along with the L79 engine blocks from 1965 & 1967 Chevelles