[ACademic]

I think the OP might be interested with the internal differences, i.e. compression ratios, camshaft profiles, etc. I'm pretty certain the full competition engines were running at least 12:1 compression and perhaps as high as 14:1. Would be interesting to see a comparison of the actual compression and cam specs for comp vs. S/C (to see how much Carroll had to detune the cars to sell them as "street" runners).