396 to 427 ???
06-17-2009, 08:41 AM
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396 to 427 ???
I've often heard that you can bore a pre 1972 396 to a 4.25 with no problems because the 396 and 427 in those early years came out of the same cast ?? Any truth to that ?
06-17-2009, 09:41 AM
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RACING JUNKIE
Join Date: Sep 2007
Posts: 4,137
Yes you can I know a guy that did it, but I'm not sure which blocks you can do it with. I'd have it sonic checked first to be safe.
06-17-2009, 10:56 AM
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Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
If memory serves me right it was the blocks with an IE or IF stamping. But like Tod said, have it sonic checked first.
TS1955
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