Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - pontiac 350 vs 400 bb
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Old 11-11-2004, 08:41 PM
jimfulco jimfulco is offline
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Are you sure it's not a 455 already? I think '71 GTO's came with a choice of 400 or 455 engines. Look on the driver's side of the block just behind the fuel pump & see if there's a displacement number cast into the block.
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