Thread: 428 max bore
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Old 04-06-2004, 08:09 PM
ted ted is offline
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By punching to 428, I'm assuming you mean to a 4.130" bore? That's 0.080" over and would highly recommend sonic testing the 390 block in question to insure it will have adequate material remaining before hitting it with the boring bar.

On the other hand, if you're just looking for 428+ cubic inches from a 390 block, then consider a SCAT 4.125" or 4.250" stroke crank which would take a 0.030" over 390 block to 431 and 445 cubic inches respectively.
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Ted Eaton.
Fe's are fast but "Y-Blocks" are fun when they run in the 9.60's at 135 mph.
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