The power loss for compression formula doesn't hold water, never did. We choose the camshaft based on the compression and CID. A cam that works well for 400cid at 10 to 1 compression is NOT as good of a choice at 9 to 1. For every full point of compression the cam needs to be about 10 degrees smaller, to keep idle quality, off idle power, and torque production in the lower rpm range on par with the larger camshaft in the higher CR engine.
What we are seeing here is typical of choosing a camshaft that is too big for the application. It would be a LOT happier with something closer to an 068 grind...IMHO.....Cliff
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https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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