Quote:
Originally Posted by xb-60
The 'rag/mag' article I mentioned earlier obviously doesn't tell the whole story, but what I got out of that article was, I think, in line with what you're saying about decent (but not too big) heads and mild cam. And some compromise on my part on gearing.
Cheers,
Glen
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I gave an extreme example of an engine to show that for enough money it likely can be done, but very likely has not been done. It just isn't the road that is traveled. Few if any builders are practicing in this arena. It is just too easy and too economical to go the direction that Blykins is pointing you, so that is where the crowd has gone. I have thought about these things because I'm an engine geek. People doing it for a living and standing behind their work do not have the luxury that I have. I haven't any skin in the game. It all just academic fun for me.
Yes. I do think you have to compromise in the gearing. If your making 500 hp at 8000 rpm and someone else is making 500 hp at 6000 rpm, to get the same performance your going to have to be geared to turn 8000 rpm at the same mph that the other guy is only turning 6000 rpm. Most guys running big FE are geared 3.5:1, some a little higher some a little lower. Your going to have to have a rear ratio at least 3.5:1 and more likely closer to 4:1 to have decent acceleration, with the low torque of a typical 302. Then the cruising rpm is going to be too high to enjoy the ride (noise). I would go with a 5 speed. The overdrive is very nice. I know that is not what you want.
Or spend a small fortune developing my magic engine. I'd expect it would take a half dozen cams to actually achieve the magic engine. Maybe a couple or three tries on the heads, too.