Olds FAQ Blocks. Blocks. Submit corrections and additions to this information to. The Olds FAQ Compiler. Blocks 1. 94. 9 1. Please refer to the. Engines section as wellChevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. How to decode Chevy Engine Codes and block casting numbers. Tribute to the famous 57 Chevy Black Widow. Also known as Nascars Chevy Black Widow. Pictures, Competition manual info. Get the facts as well as comments and helpfull. Decoding Kohler Engine Model, Specification and Serial Identification Numbers The Kohler Kseries and Magnum engine model and serial numbers appears on a decal. For Sale by Owner 1967 Corvette 427 3x2, 1957 Bel Air 2dr Hard Top, 1970 Torino Cobra 429 SCJ, 1967 Chevelle SS396 375 hp, 1969 El Camino SS396 375 hp www. SS427. com. Decoding Chevy Small Block Serial NumbersIdentification. On 1. This could easily be changed though. The casting number is located at the rear of the bell housing. The number. are about high, and oriented to the right passenger side. Casting. Years CIDNumber Color. Green. 4. 9 Green. Green. 5. 68. 92. Gold. 3. 94 Green. C2 Corvette Restoration by the Numbers What to Look For Covers the 1963, 1964, 1965, 1966, 1967 C2 Corvette with Photos. How Do I Identify Cylinder Head Castings on World Heads by Floyd Drake III. Gold. 3. 94 Lo comp Green, Hi Comp Red. This specific casting number seen on an. Ultra High Compression engine. The number 4 18 follows casting number. Please refer to the. Engines section as well If you want to build these first generation Olds Rocket engines, consider. Olds V 8s. The famous Woods, Stone, and Cook 1. Willys. was powered by a blown Olds. A lot of Willys Overland gasers used the Rocket. Don Big Daddy Garlits knows some of these people. Florida. Southern California might be a place. Try 1 8. 00 FAST 8. S. They carry a lot of parts for the mid 5. Thanks to Scott Clark, Clayton Pierce, Ray Woodward. Functional Details. That engine series used a bellhousing integral to the motor block. Thus it. costs to adapt a later transmission to these engines, but it is not. The 3. 71 and 3. 94 have a taller deck. Thanks to Doug Ahern, Scott Clark, Chris Witt. Unit Numbers. Big Block Blocks 1. Please refer to the. Engines section as wellBig Block Identification. A big block measures 1. Facing the front of the engine, at the top surface of the timing chain. A letter indicates a big block, a. Big blocks have a little hump in that area, whereas the small blocks. ID Casting. Code. Years CIDNumber Notes. A 6. 5 4. 25 3. B 6. D 6. 6 6. 7 4. Big car engine. Toro is different internally. E 6. 6 6. 7 4. VERY rare. F 6. Common big block. Stick type F sans serif. F 7. 0 7. 2 4. Common big block. Serif type F. Two vertical. Fa 7. 2 7. 6 4. Very common big block. Marine also L VIN derivative. G 6. 8 6. 9 4. Vistaetc. L 7. 6 4. 55 2. Motorhome, marine and irrigation. GM made motorhomes. Casting number appears. L 7. 88 on the block. Please refer to the. Engines section as well Look for the casting number and letter on the horizontal shelf right. The casting numbers are usually about 1 tall, and the IDCode is usually a bit larger, a little over an inch, and covered with. The most. common block will be the standard 4. F or 3. 96. 02. Fa. The a, as in Fa, is actually an upper case A, but. F, and subscript to the F set lower. Also, on. the 2. 31. L block, the L is the same size as most of the rest. Toronado 4. 25s and later 4. However, since engine. The VIN derivative stamping or engine unit number. The pad is part of. If the. engine was replaced under warranty, the pad may be blank. Rubbing alcohol. and Q tips help to remove the grime and grit from the stamping. The VIN derivative on 6. VIN, however it can provide some indirect. If the production plant third place in the VIN derivative was. KC, for example, then it obviously isnt. Of couse, you have no way of knowing for sure that the heads. V 8 Engine Code is stamped on the right cylinder head. Unfortunately, this only applies. This code consists of a prefix. V8T1. 96. 4 6. W1. V8 V, then a production. L Low compression. E 2 bbl export, G High compression, H 4 bbl export. A 2 letter. code on the oil filler tube identified the engine. V 8 Engine. Have the last six digits of the VIN number, the year of the block, and the. A 2 letter code on the oil filler tube identified the engine. You can use the VIN derivative number to ID the year. For 1. 96. 8 and. This number will be. Typically it will be covered with a power. This number should take the form of 3. Mxxxxxx where. 3 Oldsmobile division. M location of manufacture M Lansing, BBaltimore, X Kansas City. Z Fremont, CA, etc. VIN of car that motor originally came in original cars sequential production number. The letter indicating factory must. VIN it should. also, of course, match the factory indication on the body data plate. Lansing built car, the sixth place in the VIN. M, the body data plate should indicate LAN, and the. ID should also be an M. Some blocks, before 1. ID cast above the right hand center freeze. D for 4. 25, F for 4. Olds didnt cast the displacement into. The 1. 97. 7 and newer blocks will. The 3. 07 will be in liters 5. L, and a diesel engine. DX on it. The engine VIN letter will also be cast. Note that the 2. 60 blocks sometimed have the. Conductor Del Libro Manual. From the factory, the oil filler tube had a sticker containing two letters which. Cutlass, 8. 8, etc, and other. CA approved, etc. Thanks to Chris Witt, Joe Padavano, Bob Barry, Ed Ekstrom, Daren, Andy Green. Big Block Unit Numbers Detail. Here are detailed VIN derivative numbers for different engines. To reiterate from above, pre 1. RH head. Starting in 1. VIN derivative or engine unit number of the engines original car. It might look like. M2. 03. 45. 6, where. Oldsmobile, GMs 3rd division 1Chevy, 2Pontiac, 4Buick, etc. M build plant 1, E, G, M, R, or Z see below, and 2. VIN. Prefix. Number. Year. CIDNotes. V 0. V 1. 00. 00. 1 1. V 2. 00. 00. 1 G 1. V 4. 42s, including W 3. V 2. 00. 00. 2 1. V 4. 42s, etc. Turnpike Cruiser. Since this. part is easily removed or replaced, use it for an indication, not a standard. No point in mentioning the oil fill tube decal with a 2 letter engine ID. For marine engines, there is a number that begins with an L. This strange VIN derivative or engine unit number number starting with L. This may appear something like L8. E0. 0, where. L Marine or irrigation engine, 8 1. Software-Avm-Fritzbox - Recovery.Exe on this page. E0. 0 engine serial. There might also be a drill spot on the pad. Service or replacement blocks will not have any stamping on the pad. Build plant info was also used in the cars VIN plate. Some build plants were 1. OS Oshawa, Canada, eh B or BA Baltimore, MD E or BL Linden, NJ. G or FRA Framingham, MA K or KC Kansas City, MO LA, LAN, or M Lansing. MI R Arlington, TX BF or Z Fremont, CA. Thatll help ID the block year in case the heads are not original. For the purists on the back of the block, near the distributor, is a 1 to. Julian day of. the year on which the block was cast 1 to 3. It will generally match. Julian Day code cast into the heads, crankshaft, water pump, thermostat. Thanks to Greg Rollin, Chris Witt, Joe Padavano for this information. Big Block Functional Details. Joe Mondello said it was OK as did Chris Witt who relayed visually inspecting. E block engine in cutaway at MSU that had remarkably thick walls. Having a set of std 4. I went ahead and installed them. E block. These motors have a 4 bore, so had to go. The machine shop was skeptical, but noted no problems. Apparently. they can hear when the cyl walls get too thin while boring them out, and. Motor is assembled and running well. Does not get hot. Only about 1. 50. Know of at least 3 other engines this has been done to. So to summarize, it seems that the early 4. Thanks to Peter Sliskovich for this information. You can use either a 4. Whats different is the crank stroke. So get the crank, rods and. Also, different combinations of lifter diameter. The 4. 25 D blocks come in. Toronado units have larger lifters, set on a more modern. Toro 4. 25 blocks have the common. The Toronado block is. Toronado engine brings big valves, etc.