Wize - I found that the torque curve stayed similar - all had around 560 fy lb peaks, but they moved up as the cam / head / intake setup went up.

My testing was more focused on the 3 big players, as opposed to singling every little item out. The stock heads, with small cam, and stock heads, still made 560 ft lbs, and IIRC most were all 500+ ft lbs through the entire pull.

I wonder if it's splitting hairs at that range, but the torque curves definitely moved up as the hp went up. We pulled it a few times to 7200 with the big setup and man.... there aint a sound better!

I just picked up a virgin 71 360 block and I'm tring to decide between a 4.125 and a 4.25 crank.

I'm going the 414 torque curve will remain the same with just another 500 rpm and more hp up in that range.

Please put this most awesome and informative threads in the Tech Archives!

Thanks!