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Rancher2005
02-09-2011, 04:30 PM
if i put a 0.60 over piston in my 400 ex what would that make it........ sorry for the stupid questions
Colby@C&DRacing
02-09-2011, 04:50 PM
.60 calculated to a 1.5mm over
.40 is a 406
.80 is a 416