The rules in our class require factory components so I'm limited to stock intakes, and stock heads. I can get away with somewhat of a performance cam as long as the tech crew can't detect it with a vacuum test. Right now I'm stuck with 1.94" intake valves on stock heads (hope to get 2.02" soon). 10.5 compression might be pushing it as they check that ocassionally.

I have a Comp # 12-211-2 cam that I hope to use. The rules limit the cam to .410 lift, but I think we can get away with the .470 since everyone else is running bigger cams.

So within these limitations, would the 377 be the way to go? What is it about this arrangement that gives me the midrange torque? larger bore with smaller stroke? so would low range power be large bore large stroke, and top end power be small bore small stroke?