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 c...
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The firing order for Chevy Small Block V8 engines (265,283, 302, 327, 350, 400) is 1-8-4-3-6-5-7-2.The firing order for Chevy Big Block V8 engines (396, 406, 427, 454) is the same as the small blocks: 1-8-4-3-6-5-7-2. ...