If your 270 cam is in good condition, then it should, so everyone says, take regrinding without difficulty. If the lobe and bearing surfaces are worn or scarred, then you should find another cam to regrind. i provided a new cam for regrinding because i wanted to do that only once, eliminating any potential problems and getting the best possible results.
A military 302 cam is not likely to provide any improvement in "high-speed" performance over the stock cam in a 270 for a civilian light truck. "Speed" is not what a six-by-six offers, although many a soldier may wished for it when under fire.
i don't have the manual in front of me, but as i recall the stock GMC 302 produces its maximum torque at 1600 rpm, and peak horsepower at 3600 rpm. On the dyno, with two Holley-Weber carburetors, my engine produced maximum torque at 3050 rpm and horsepower at 4390. The cam (228 @ .050) and head work are most of that difference. More carburetion might raise the horsepower peak, and i may get to that if i live long enough and can afford the gasoline.
God's Peace to you.
d
Inliner #1450
