drives a LSX zr2
Join Date: May 2010
Location: Alpena, michigan
parks450 is offline
862 vs. 799 heads??? big difference or no?
i have a 2003 5.3L engine that im building. it came with 862 heads but would like to get a set of 799 heads. is there a big difference between the two, like valve lengths etc... and would i have to buy different pushrods and cam if they are. so far i have a cam with .522 and .529 lift and summit told me to go with 7.400" pushrods. would that have to change? or would i be ok with everything still. i really need help on this guys thanks.