cam specs are 244/254 @.050 .510/.530 lift hydraulic flat tappet, range 3500-7000 rpm. Flat top pistons 64cc chamber heads 2.02/1.60 valves stock runners, straight plug double hump no acc. holes, engine is fresh. 4:10 rear, 33" tire, power glide with brake, 5500 stahl, car maybe 1400lbs