Quote:
Originally Posted by KLAB
So are you saying all the 400 SBC's are 4 bolt blocks, and in the 509 and 817's they just installed 2 bolt main caps in the 4bolt block? so you can put 511 mains in a 509 or 817 block?
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Here is a 330817 block I have, pulled from a 72 Impala:
Do not go swapping main caps, if you do you WILL need machine work to correct them if they can even be trued.
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5.3L LSx, Fbody .500 cam, TH400, 4500 Stall, Moser 9"
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