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Old 12-11-2009, 08:46 PM
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Join Date: Oct 2004
Location: Brunswick, GA
Cobra Make, Engine: BDR 1311 428PI
Posts: 3,044
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Originally Posted by Igofastr View Post
there are lots of 390s with enough material to bore out. Just do the ole 1/8th drill bit test followed by sonic testing.
Ron, I think you have the 428 and 427 blocks confused. While there are some 390 blocks that will go to a 428 bore I'm not aware of any that will go to the larger 427 bore. If I'm wrong on this you guys can call me out, but I don't think so.

Steve
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