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**71CHEVYSHORTBED402** · 04-26-2015, 08:37 PM

Owner's manual reads 400 engine, 402 displacement. As davepl eluded to, GM may have consistently referred to the "engine" as a 400, while 402 is displacement.

04-26-2015, 08:37 PM	#17
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,391	Re: 1971 Big Block Exhaust Manifolds??????? Owner's manual reads 400 engine, 402 displacement. As davepl eluded to, GM may have consistently referred to the "engine" as a 400, while 402 is displacement. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 04-26-2015 at 09:07 PM.