Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - I have stock Gen IV 454 & 781 Heads, Compression ????
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Old 11-27-2011, 07:10 AM
454C10 454C10 is offline
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stock flat tops on a 454 with 120-123cc heads (781's) makes around 7.7 to 7.9 :1 cr.

you will need a dome piston with 781's to get the compression up or do a 496 stroker kit.
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