Newbie
I have a stock bottom end 2004 5.3 truck motor. The heads have been ported ( intake and exhaust side) 5 angle valve job 650 lift springs and harden pushrods. Carbed intake and a fitech 600 power adder . The cam specs are adv.277/285
dur@ .50: 227/235. Lobe sep: 110.0
valve lift : .613/.620





