COMP Cams Magnum Hydraulic Roller Camshaft Chevy Small Block 305 & 350. If you're not more ET/Timeslip oriented the 280 cam can also work with 3.55 gears and a 4spd on the street. COMP Cams Magnum 270H Hydraulic Flat Tappet Camshaft Small Kit Lift. COMP Cams CL11-460-8 Magnum 244/244 Hydraulic Roller Cam and Lifter Kit Chevrolet. The 270 being a decent do it all street cam and the 280 a do it all street cam with a sacrifice of streetability= less lower rpm torque and vacuum for more upper rpm power.
'In a 350' it's really the first step in cams that shifts the power closer to the upper rpm's. If you have 9.75+ compression (not likely unless you have flat top pistons and the 67-68cc heads) you could go with more cam like the 280 Magnum but even with 202/160 valves it really likes a mild amount of head porting to help it breath. As long as you have around 9.5-9.75 compression then something like the Comp Cams 270 Magnum would work well with those heads, 355 gears and the 4spd. Find CHEVROLET 5.7L/350 Chevy small block Gen I COMP Cams Camshafts and get Free Shipping on Orders Over 109 at Summit Racing. This means that if you were to place a dial. If you're looking for something as simple as the 350HP cam then I suggest an older design aftermarket cam because they are easier on the valvetrain. For example, a typical small-block Chevy intake lobe may be expressed as having 270 degrees of advertised duration.