You can identify a Chevy by the numbers on its engine block, recorded in an official Chevy engine block registry. The identification number consists of a seven-to-eight digit code. The prefix consists of five digits and explains the date and the location of the Chevy’s manufacture. The suffix provides the size, model year, and the horsepower of the Chevy engine. The suffix can be either two digits or three digits.
Locate the Chevy identification number on the engine block. Depending on the size of the engine, the location of the identification number will vary. Look for the identification number on the engine block. The identification numbers on a Chevy engine with a small block V-8 are adjacent to the cylinder heads on the passenger’s side, close to the front of the engine block. Look closely because the alternator blocks the identification number. The identification numbers on a Chevy big block V-8 engine are on the covering of the timing chain. Find the identification numbers of a V-6 on the distributor, which is on the passenger’s side of the engine.