Building an engine? Dec 25, 2016 9:20:27 GMT -5 via mobile Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by my96gt on Dec 25, 2016 9:20:27 GMT -5 Dont want to do all that math to figure out your compression? Let diamond racing do it for you,www.diamondracing.net/tools/