a desk top dyno could give u a good baseline idea of whatthose parts will do together sesme like s good combo to me . I think new valve springs is must
Mopar Muscle did a buildup not that different from yours. They used a reconditioned 318 longblock with stock heads. They used a cam a bit hotter than yours, but otherwise it was essentially the same. Before any real tuning had been done, they'd added 83hp, and managed a final figure of 282hp at 5,000rpm and 340 lbs torque at 3600 rpm. The cam was a CompCams XE262, but they used the 600 AFB carb and dual plane M1 intake, so it's not far from what you have. I' guessing you'd easily added 70-75hp, with as much torque at a slightly lower rpm.benbear said:How much horse power would I have approximately with this combination?