I installed a crane powermax cam in this 454. Its .253/.237 @.050 & 112 sep. The engine does have a little lope at idle when warmed up but I do wish it loped a little harder HOWEVER this 454 hauls @5$. I am very pleased with the power from the 702 heads. My truck is set up as follows; It has the above mentioned cam, 750 CFM edelbrock carb, comp roller rockers, holly med rise intake, hyfire ignition, mallory HEI dist, double roller timing chain, victor series racing fuel pump with regulator, 3872702 closed chambered oval port iron heads, 1970 3963512 engine block bored out @ .040, 2.5 inch dual exhaust, full length headers, and flowmaster delta 50 series mufflers, turbo 350 trans, and 12 bolt 3:73 rearend. The truck is a 1978 C10 half ton fleetside with a B&M truck megashifter, factory rallys, and an American flag sticker on the back.......