427 vs 496
10-25-2012, 08:51 AM
#1
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CRAFTSMAN
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Join Date: May 2007
Posts: 60
427 vs 496
427 roller motor with 291 cast closed chamber heads going to 496 cast heads roller motor car went 5.90 with 427 what could the difference in et be hypotheticaly of course thanks any guess is welcome
