I have a 1986 Chevy k20 has a 350, Hedman headers 1-5/8, Holley contender intake, dart II heads and a hydraulic flat tappet cam 288/298, lift is .444/.466 and the rpm range is 1600-5200, lobe separation is 112. The truck is more of a weekend driver but I also go mudding. It had the old...