Hi, had another thread about 468 advice but to make long story short, .060 over 454, 12:1 or better to run E-85 (no pistons yet) Solid roller being reground at crower but its starting out as a 260-270 at .050 with the lift around 650-677 on a 107. Trying to grind it smaller like a 255-260 ish and same lift. 3300lb car, 4.10 gear ,th400 converter 4500 or better ...friday night type street strip car. Was looking for aluminum heads to replace the 781 or 063 steel ovals I have to run. Thanks!!