Since February 1998, we've had millions of page views! We appreciate the support and encouragement we have received from our visitors around the world for the past 20 years. If you don't see what you are looking for, drop us a line in the forums, and we'll be glad to help. If you are driving a Ford, Mopar, one cylinder Junior Dragster, motorcycle or a boat, don't worry, there's still information here you can use. The 327 used a domed piston with valve reliefs that allowed for high compression ratios. 10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. The piston design of a Small Block Chevy 327 can also be a clue to its identity. Since 2012, Mortec hosts free car mechanic forums, staffed by seasoned auto technicians with unmatched experience and a passion for helping fellow users. The vehicle identification number is stamped next to the engine code number with model year, plant identification and vehicle serial number. We are constantly adding new engine codes and auto parts to the site. Mortec also has information on Chevrolet V-8 bore and stroke numbers, GM crate motors, Holley carb tuning tips, and crankshaft journal sizes. We have detailed instructions about Chevy casting number locations and extensive notes about Chevy "mouse motor" and "rat motor" V-8 engines. Whether you are an engine builder, drag racer, circle track racer, boat racer, road racer or a hobbyist doing a classic Chevrolet restoration, Mortec has information you can use, starting with our ever-popular Chevy casting number lists for small-block (SBC), big-block (BBC), and 348-409 V-8 engine blocks, cranks and heads. Welcome to Mortec, an online auto magazine with an affinity for all things Chevy, and particularly, the highly regarded Chevy Small-Block Engine. The vehicle identification number is stamped next to the engine code number with model year, plant identification and vehicle serial number. You can plus find the date code situated on the passenger side of the block near the freezes plug (in some earlier production blocks from the 60s). It's conceivable that some confusion of procedure may have taken place at the service end.Join our Forums! Chevy Casting Numbers and more! The Chevy small additionally big-block engine date codes are located on the back ledge of the block, next to cylinder 8, behind the passenger side cylinder chief. I would also be interested if anyone has information about the year code being for the model year or year of replacement? I know some GM documentation is recorded stating "model year" however I have seen CE blocks with vin# and year of replacement in the sequence. I had been looking for information on the letter suffix code, I have seen "A" used before, and it certainly makes sense that it would be a repeat of the series for the plant sequential numbering system as the warranty sequence encompassed blocks for all GM models produced there. Chevrolet Block Identification number locations. 10243880 Small Block V8 1995-1999 350, 4 bolt, crate engines and ZZ4, roller cam, one piece rear seal. Only the number 4 was visible through the paint. This view of the Chevy small-block shows the location of the pad on the right side of the block deck where the suffix identification code is stamped. 10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. I found mine on the verticle rough casting near the filter only after being hot tanked. It was not always done of course and at times relocated to other areas of the block and can be very light and undetectable under paint. The authorized GM dealers were supposed to document the block with the corresponding vin # by using the same conventional gang stamp as the factory would use. Just for conversation sake I would like to add that warranty replacement blocks were still under warranty by GM for the remainder of the initial purchase gaurantee period.
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