Chevy Engine Suffix Codes
Small Block Chevy (SBC) Engine Suffix Codes
Big Block Chevy (BBC) Engine Suffix Codes

The Engine Suffix Code is stamped on a block pad located immediately forward of the right hand or passenger side cylinder head. The entire engine code contains the assembly plant (1 digit), month (2 digits), day (2 digits) and the engine suffix code (1 to 3 digits). To attempt to make this clear the engine suffix code is the 2 or 3 digits at the end of the engine code. Suffix being the key word meaning at the end. For more help and a better break down of the engine code go to engine code help or engine decoding FAQ.

Chevy Engine Block Casting Codes
Small Block Chevy (SBC) Engine Casting Codes
Big Block Chevy (BBC) Engine Casting Codes

The Engine Block Casting code is one of the best ways to identify an engine block. This casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange. See alse Chevy casting numbers location.

Chevy Cylinder Head Codes
Small Block Chevy (SBC) Cylinder Head Codes
Big Block Chevy (BBC) Cylinder Head Codes

The Cylinder head casting code is one of the best ways to identify a cylinder head. It is usually found on the top of the head in between two valves and the rocker arm studs.

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