illtal
Well-Known Member
So I assume that when they use the custom pistons its the reliefs and chamber volume that's calculated to give the correct compression, hell I didn't know any off the shelf pistons would give a straight 12:1 and have enough valve clearance for gen3/voodoo with a pred/voodoo crankyes , if you use coyote piston which has a higher CH
compared to the voodoo piston. .
JE/Diamond/Manley make aftermarket 5.2/ voodoo spec pistons - with the shorter CH
If you use those pistons with a boss crank(like i have in my 18GT ) you will have lower CR.
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