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434 sbc
Jan 15, 2014 9:19:59 GMT -6
Post by junior on Jan 15, 2014 9:19:59 GMT -6
ok please help me understand everything im telling you i have is brandnew dart lil m block callies dragonslayer crank 4.00 stroke callies ultra xd h beam rods ok the prob im haveing is ordering my pistons im going to use je pistons with dart 23 degree heads what would be the best ratio for pistons 14.2 15.2 i dont no help me understand
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434 sbc
Jan 18, 2014 1:58:05 GMT -6
Post by milkman on Jan 18, 2014 1:58:05 GMT -6
either one would work, I personally would go with the 14.2 you wont gain much more power with the 15.2, but it will be easier for the engine to detonate if it goes lean.
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434 sbc
Mar 4, 2014 11:45:24 GMT -6
Post by flipflopoo1oo on Mar 4, 2014 11:45:24 GMT -6
CCs on the heads comes in to play as well as fuel octane! Fly cuts per valve size! Cam degree can lose or gain compression as well as valve adjustments. Engine temps also by expansion rates! I never ran so much on a piston as to design by tune improves and easier on the bottom end, not to mention room for more fuel and mixture swirl! Clearance is no problem!
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