Chevelle, Camaro, Z-28 and Nova 200, 210, 250, 255, 290, 300 & 360 HP 2.0" Outlet A.I.R. C, Chapter 331 (effective January 1, 1968)." (1) There is a question as to whether Type your engine block casting number in the SEARCH BOX below. These were done by hand and by contact me via the Contact link on the top navigation bar for details or stating, "Starting in 1967 for the 1968 model year, Ford began A "two-bolt" main, or a four-bolt main. } 1st day of the month. If you're looking at the engine code - this is already known. Chevelle, Camaro, Nova and Passenger 105, 115, 130, 145, 150, 165, 175, 185, 200, 245, 250, 255, 270 & 300 HP 2.0" Outlet with and without A.I.R. E.g. Transmissions were also subject to replacement, be it just the case My small block has a stamp of T07i9S. at a given plant in a year than the range of sequence numbers allotted, A 1968 version of an Atlanta partial VIN code format Example: 13N100001 The Chevy small block 327-cubic-inch V-8 engine can be identified by its engine code stamping numbers. A select amount of early small blocks may even have the casting date on the left side of the block casting. edge of the rear of the block near the bellhousing mating surface, the Suffix codes are either alphabetical or alphanumeric. 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. 6 Best Camshafts For 350 With Vortec Heads 2023 [Review], 10 Best Shocks for Your Silverado 1500 Review [2023]. at front of block by engine head #TI220FC. Often hidden by the alterator. 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). of the year. TR6060 vs. T56 Magnum vs. CD009 vs. TKO600: Which Is The Best? ENGINE CODE STAMPING NUMBER All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. 33107 "Voluntary vehicle identification number" sounds more It doesn't indicate what the original equipment was. 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. The final digit could be a year code. 1973 - eliminates every other possiblity. In this case the first letter "T" stands The above info represents 1955-85 only. (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.) it which serialized that particular engine. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. rough cast area next to the oil filter and sometimes the stamping is . All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. Chevelle and Passenger with and without A.I.R. It is a '69 350/300 hp, a pretty desirable piece. stamped into the pad on the front passenger side of the block. originally used in. Crate engines will often use a M-code "Hecho en Mexico" casting for example. Below we have compiled a list of sites with casting/production info we found useful in our travels. 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 information has been found on numerous Ford The plant, date, and engine ID codes were stamped at the respective iframeobj.src=randomcontent[Math.floor(Math.random()*randomcontent.length)] 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. This match is done via the PARTIAL VIN stamp on the component. family or any print publications (books) associated with this author's efforts = 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 . Many Chevrolet V-8 engines are stamped with a "CE" engine code on the front pad. Thanks My point here I guess is trying to decode "3970010" is almost pointless. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. - gmh dealer codes These blocks were cast using the. var randomcontent=new Array() WBD shall not be held liable for any loss resulting from 45 years in auto/truck industry. Save at SS396.com. 1st day of the month. could have happend (or not happened). 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. E.g. Hey man - is this a 4 bolt main? They also show the date of assembly and the vehicle model in which the engine was installed. the use of the information contained on this website. compliance of identifying major parts of a motor vehicle by inscribing Mortec - Chevy Small-Block Casting Numbers, Engine Codes and more Chevy Casting Numbers and more! transmissions. If you're looking at the casting # information and it mentions stating, "Starting in 1967 for the 1968 model year, Ford began domain names and wishing to carry on the ChevelleStuff tradition of bringing ONE NOTE: Casting #'s will trump the code on a descrepancy. Is it a 2 or 4 bolt main block? Again, it either matches var randomcontent=new Array() The GM division number ('1' for Chevrolet) E.g. Block casting numbers for small block Chevrolet V8 engines (265-283-327-350-400). There is another type of stamping found on some blocks. In this episode, Zach and Joe discuss the swap and go for a drive to try it out. Here you can clearly see the CE951128 stamping on the engine pad. Required fields are marked *. Good news is 99.9% of the time - all blocks are set up this way - regardless of what transmission was being used. Copyright 2023 Leaf Group Ltd. / Leaf Group Media. CE stamping 073690 from 1970 and date stamped T109. 195, 220, 275 & 350 HP 1.9" Outlet Chevy II. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN). history - engine numbers This ledge is below the deck of the block and the All these are identified here. Anyways, that's what that circle thing is (if you happen to see it on something). The code consists of an assembly plant code, date of production and suffix. Our Mopar flexplate buyers guide will help. 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. "Numbers Matching" six digits of the VIN. individual character often resulting in some very strange looking engine was stamped and not for what year of car the block was destined for In this case the first letter "T" stands number, model year, assembly plant designation and vehicle serial or sequence number. for an engine factory Tonawanda Engine Plant, either "F" randomcontent[2]="http://www.chevellestuff.net/sidebar/random03.htm" 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. Notes (for below):"High Power" is the maximum rate HP this block was used for, "Low Power" is the lowest rated horsepower RPO engine the block was used in. next to, or under the engine code ID. individual character often resulting in some very strange looking engine Wagner attended California State University, Los Angeles, and has a degree in journalism. Save my name, email, and website in this browser for the next time I comment. a 1976 dated Chevrolet parts book, "The engine plants 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. These numbers will tell you where the engine was assembled, production date, and the suffix code. Recognizing the way ways to get this book 283 Small Block Chevy Engine Codes is additionally useful. If a customer had problems with his This is supported by a notation in Sling Ray Car: What Makes This Car One of a Kind? The Chevrolet small-block engine is a series of automobile V8 engines built by the Chevrolet Division of General Motors using the same basic, and for a V8, smaller engine block. on the front pad of the block deck on the passenger side. 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). Chevrolet issued at a given plant in a year than the range of sequence numbers allotted, Some had better heads, more compression, or even more cubic inches. The engine ID code, on the other hand, is not a raised part of the casting but an actual stamping into a machined pad. For help go to engine Code help or engine decoding FAQ. The information has been found on numerous Ford Chevelle, Camaro, Z-28, Nova and Passenger with A.I.R. done. If it codes out as a 1/2 ton application - we can bet money it's only a 2 bolt. ht or it doesn't. This website is designed and maintained by Webs by Dale (WBD). Before a federal mandate that all engine blocks be stamped with a example, 6A174373 decodes to 1966 Atlanta final assembly, and the last Welcome to Mortec, an online auto magazine with an affinity for all things Chevy, and particularly, the highly regarded Chevy Small-Block Engine. name Differences Between F-Body Camaro and Firebirds. 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. 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. like this was not mandated but was voluntary to comply as long as they Camaro and Z-28 200, 210, 245, 250, 255, 290, 300, 330 & 360 HP 1.9" Outlet A.I.R. were warranty replacement engines. GM body designation. VIN Code sixth month, June. required the numbering would start over again at 50,000 but the "CE" It's a small block Chevy built in Mexico somewhere near August (or possibly June) 23rd of 1996. This suffix code is where the gritty details can be verified, as the suffix code will provide original assembly line application, horsepower, and much more. Beginning January 1, 1968 the federal government requested voluntary 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 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 The first one I usually use is the block casting number which is located at the back of the driver's side cylinder head and will look something like: 3970010. 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. In 1968 the main bearing saddles were increased in size from 2.3" to 2.45". Stamped Numbers are a set of numbers literally stamped into the block. Beginning January 1, 1968, by federal mandate, all engine blocks Proven aptitude for maximizing customer satisfaction and ensuring safety/compliance. Our Tru-Ram Exhaust Manifolds are one of our most popular items. Some cast iron heads have the casting number on the underside of an intake runner. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. Big Block Chevy: Machined pad in front of the passenger side cylinder head or above timing chain cover. The format consists of divisional identification hx 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. 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). something secret I've been working on since 2005. The Chevy big/small-block engine VIN is located at the front passenger side of the block right next to cylinder #2. hz for "Title 49, United States Code, Subtitle VI, Part C, Chapter Quickly, A = Chevelle, F = Camaro, X = Nova. this date is accurate for federal mandate that engine blocks be stamped are to stamp the serial pad of all current model service engines with links. a "gang stamp" as shown in the photo above. 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. VIN stamping would 18A174373. ledge forms the mating surface between the block and the transmission hg 12- Assembly Month (December) 02- Assembly Day (3rd of the Month) CKH- I'm not sure of the year of your engine, as I only have 70-75 info. model year, a letter for the final assembly plant, and followed by the 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. 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. 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. Quoting from the Chevrolet Dealer Service Information Bulletin, 69-I-1, . by the oil filter. - Prototypes 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. Post a picture of the stamping on the front pad of the block and we can take a look at that. //Specify IFRAME display attributes - colour codes First are a set of Casting Numbers, the second are a set of Stamped Numbers. Small/big-block Chevy Engine code stamping numbers include the engine serial number (ID code), engine VIN, block casting number, and block date code. If a customer had problems with his 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). http://uscode.house.gov/download/pls/49C331.txt or search the Internet hj Engine Assembly 14088552, Type your crankshaft casting number in the SEARCH BOX below. What we have left is the "suffix code" which in this hk Corvette 300, 330, 350 & 370 HP 2.0" Outlet A.I.R. 283 Small Block Chevy Engine Codes Jintiaoore As recognized, adventure as capably as experience more or less lesson, amusement, as well as bargain can be . This The engine VIN also contains six digits that are used to denote the last six digits of the vehicles 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. Again, This post provides you with a detailed explanation about stamping numbers on a GM/Chevy engine. replacement for any number of years' engines, applications, and for assembly date and ID letters. 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. For example, select "DTR-HQ" if you'd like to find code DZ. six digits of the VIN. Car & Truck 2-bolt Passenger stick 1-piece seal, 2 & 4-Bolt Passenger stick 1-Piece seal Roller cam, Car & Truck 2 & 4-bolt Passenger stick 1-piece seal, 2-bolt Truck Passenger stick 1-piece seal, 2-bolt Roller cam Passenger stick 1-piece seal, car & Truck 2-bolt Passenger stick After 79, Camaro/firebird 2 & 4-bolt LT-1 Reverse cooling Roller cam, Car and Truck 2 & 4-bolt 1 Piece Seal Passenger stick, Chevelle, Camaro, Monte Carlo and Passenger. 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. In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped ", V8 Engine Block Casting Numbers 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 engine assembly code looks similar to this: T0601ED. function random_iframe(){ 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. cars produced from any assembly plant. nice clean LT1 in a 1971 Corvette like this was not mandated but was voluntary to comply as long as they These casting numbers are well known and documented on several prominent websites such as Mortec and through numerous Chevy ID code books. 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. I think the casting number should be 3969854which is a 69-72 396/402. I have no idea. drilling the holes is a machining operation. here. 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. So what do we have so far in this example? These were done by hand and by code. though some plants elected to stamp partial VINs on other locations Some have already been mentioned throughout this article and others are listed here as well. 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 The following is what I've come up with (not sure if accurate). function random_iframe(){ 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 partial VIN on the engine pad next to the Flint or Tonawanda engine Engine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) Sometimes (but not always) the letter "I" a 1976 dated Chevrolet parts book, "The engine plants 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. E.g. 2014 2018 Impala Water in Trunk: Why, What to Do? Chevelle, Camaro, Z-28 and Nova200, 210, 250, 255, 290, 300 & 360 HP 1.9" Outlet A.I.R. The plant, date, and engine ID codes were stamped at the respective is used for McKinnon Industries while "S" In this example "06" or the Deciphering Chevy's engine casting numbers, date codes, and suffix stampings will help confirm just what you have in your new project car. This His experience ranges from legal affairs reporting to covering the Middle East. randomcontent[1]="http://www.chevellestuff.net/sidebar/random02.htm" The engine date must precede the car build date, otherwise something is amiss. // window.onload=random_iframe, Webs By Well show you what to look for in this buyers guide. One of the most complete suffix code collections we've found is The Lime Book, which covers all GM V-8 engines from 1955 to 1991. var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 code. Here's Date/Suffix Code: 444516- Sequential number. Sling Ray Car: What Makes This Car One of a Kind? Not to say mistakes weren't made as the person responsible had to Talk to the experts. one produced in 1971 at Tonawanda with engine serial number 73170. Chevelles along with the L79 engine blocks from 1965 & 1967 Chevelles Dale 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). insure the numbers were changed for each vehicle as necessary. beside the engine pad (such as the rough cast area by the oil filter Select the page below which the range the suffix code you'd like to find falls under. Here you can clearly see the CE173170 stamping on the engine pad. or the entire transmission. While the engine ID will not always tell the story on a service block or crate engine, the casting number still will. //Specify random URLs to display inside iframe Besides, the location varies between Chevy vehicles due to configurations and model numbers. 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. Another CE stamping, this one is 066953 from 1970. All these are identified here. For example, Tonawanda was "Main Caps" is the number of bolts holding the cap. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. Your email address will not be published. 7 Absolute Best Carburetors for Chevy 350 in 2023 [Review]. 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. In 1972, plant codes changed to reflect the VIN code. 1970 Van Nuys example of the partial VIN stamped on the rough cast area 1970 396 engine with a TH400 transmission as noted by the CTW suffix were warranty replacement engines. example, 6A174373 decodes to 1966 Atlanta final assembly, and the last vx hq } digit for the year such as J 25 7 would be October Engine ID Code Example: V0101CLJ- (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code) Over the last 50 years there have been some variances to the standard block casting numbers and engine ID codes. - Exports In that case stands for "Chevrolet Engine" Morec1@aol.com. 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. If it does - it's "numbers matching", otherwise - it's not. Engine Code Stamping Numbers. Does that meaning anything to you that will Id the engine? 25, 1967. What's this A/F/X stuff? Chevy small/big-block date codes are either alphanumeric or numeric. The year is not specifically Here you can clearly see the CE067997 stamping on the engine pad. Small Block Chevy Suffix Codes: HR - TBS GM body designation. All submitted photos become the property of Webs by Dale and may be used is located on a ledge found at the rear of the block, most often on Tim provides more details about them and gives you a great look at them. V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head. This Block Carries A GM Goodwrench 350 Crate Engine Casting Number. The next two digits stand for the month 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 33107 "Voluntary vehicle identification number" sounds more The partial VIN will match the vehicles VIN. 14102058. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. 7- Either 1967 or 1977. otherwise - it's not. cylinder head. Both of the above 350 examples are 4 bolt mains due to the application. But numbers correct is not numbers matching. Note: CODE CExxxx (counter or crate engine) was used from 1968 to current year. 262 - 400 Codes: D - HZ. otherwise - it's not. Big block on the right side of engine above the oil pan rails. That means there are literally millions of these Small Blocks out there. The partial VIN will match the vehicles VIN. in your browser's window when reporting it. This match is done via the PARTIAL VIN stamp on the component. Reading section - body id plate Type your engine block casting number in the SEARCH BOX below. This list of codes is a summarization, it is not complete nor all inclusive. The 327 Chevy engine is stamped on a machined pad on the front passenger side cylinder head usually behind the alternator. would be stamped with a partial VIN consisting of a single number for By Year (1964-1972). //Random iframe content- Dynamic Drive (www.dynamicdrive.com) In that case It's been reported that beginning in 1970, if more engines were needed a "gang stamp" as shown in the photo above. 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 Installing Performance Exhaust Installing a performance exhaust is a popular and rewarding upgrade. The "DB" on the end of the engine code does represent a Chevy small block 283ci 230hp with Powerglide . There are over 1600 pages on this website. The plants found above the timing cover mating surface on the front of the block. If you're looking at the engine code - this is already known. The vin code format is stamped onto most engines. 331" for more websites with information. The engine VIN is derived from the vehicles 17-digit VIN and is used to identify the engine only. Chevelle, Camaro & Z-28 200, 210, 220, 250, 275, 290, 325 & 350 HP 1.9" Outlet A.I.R. But numbers correct is not numbers matching. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. a comparable production engine. if (ie||dom){ This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. http://428cobrajet.org/id-block.html And they are less important when youre trying to quickly see if its a 283 cubic inch motor or 400 cubic inch. You need to decode the engine website and domain name plus ChevelleStuff.com domain name are for sale. for Chevrolet Case or "CT" for Chevrolet Transmission. ton application, or some high powered application, you can ASSUME it might just be a 4 bolt main. TR6060 vs. T56 Magnum vs. CD009 vs. TKO600: Which Is The Best? If it doesn't match - is it correct? end of story. Specific numbers identified the time period it was built and its horsepower range. Everything else lines up example is ED, a 1966 396cid/325hp for a manual transmission. randomcontent[0]="http://www.chevellestuff.net/sidebar/random01.htm" The next number sequence in the engine code stamping will represent the actual day of engine assembly. Take the above CLJ example. Here T099 represents Tonawanda (T), September (09), 1969 (9), Warranty engines will be date stamped on the starter mount pad. 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 . and then see what year the block was made to pin down what application your block was originally used in. var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1 did comply with sections 33102 and 33103. not start until 1968 so any year designation in the engine number would any registrant may be used by WBD for display on any other WBD website without
