Thoughts on a 390 cu in. stroker from a 318?

273 said

Problem with gaining low rpm power is the percentage of power made from torque at lower rpms, e.g.. 25% at 1,313 rpm, 50% at 2,626 rpm, 75% at 3,939 rpm, 100% at 5,252 rpm etc.. Every rpm has it's own percentage, as rpm goes up percentage gets higher and more importantly for your application vise versa. Which means big torque gains only make small to moderate power gains at low rpms, why diesel are preferred for low rpm power cause of there ability to make huge low rpm torque per Cid.

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When you say power you mean horsepower right? Not sure what point you're making with this comparison. If comparing a similar built smaller cubic engine at the rpm range where the op wants his power won't the smaller cubic inch engine have less horsepower in that same rpm range? The formula for hp is torque xrpm÷ 5252. So if the rpm is the same and torque is more Hp is going to be more. I don't see what difference the percentage makes as you can't change it. It's built into the formula. Or am I misunderstanding what point you are making.