250 HP Slant Six - No Turbo

Yes, you read right.

I've got it set in my mind that I am going to build a 250 HP Slant. When I say 250 HP, you all think, "that's not too difficult with the right parts." That may be true. But when I say 250 HP, I mean rear-wheel horsepower.

Since I'm talking 250 HP at the rear wheels, mathmatically, I'm estimating that I'm going to lose 16-18% of engine HP through the drivetrain. Thus, at an 18% loss, I'm going to need 300 HP at the engine.

Sure, any guy with a fat wallet could make 300 HP easy, it's as simple as dropping by the local speed shop. But what about the average joe who has bills to pay? This might require some theoretical engineering. I'm not talking about nitrous.

I believe it's as simple as reverting back to the old school. I think it's time to get out the text book from the late '70's and early '80's. So if any of you want to drop hints, advice, experience or knowledge, do it here. I will appreciate the help.