![]() The last 2 or 3 digits are the Engine Suffix code which designates the vehicle type or model the engine was installed in.ĮD = Chevelle, Manual Transmission Engine Assembly Plant CodeĬhevrolet Big Block Engine Suffix Codes. 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. The numbered 2nd and 3rd digits represent the month and the 4th and 5th indicate the day of the assembly. The first letter of the code designates the assembly factory. Some Truck or Marine blocks may have the codes stamped on the flat block just above the timing cover. The Engine Code is located near the Vin number on the machined boss at the front passenger side of the block. Chevrolet Big Block Engine Code Location. The engine code designates the assembly factory, the date of assembly, and the vehicle model it was installed in. GM Division CodeĦ = Cadillac Chevrolet Assembly Plant Codes Last 6 Digits = Equal the last 6 digits of the vehicle’s VIN.ġ23456 = Matches the last 6 numbers of the VIN of the vehicle the engine was installed in. The 3rd digit denotes the vehicle assembly plant, and the last 6 digits equal the last 6 digits of the vehicle’s VIN that the engine was installed in. The 1st digit represents the GM division. The Engine VIN is a stamped code located at the front passenger side of the block, on the machined boss just below the Head. Chevrolet Big Block Engine VIN Number Location Chevrolet engine produced prior to 1968 may or may not have a partial Vin. This engine Vin was only federally mandated starting in 1968. ![]() The Engine VIN Number is the last 6 or 9 digits of the vehicle’s VIN number. Chevrolet Big Block Engine Identification ![]()
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