Once above the torque peak the penalties for low compression diminish a bunch I am sure. At peak torque reversion should be gone, so the power loss could be figured from a "compression change only" stand point, I would think. A 279/289 cam may be shorter on working duration than it first appears, if it is an older lobe type with big lash.
Unfortunately the torque figures under the curve aren't on the pics so we can't say for sure, also with max torque at 5600, i'd assume that the converter needs to stall at least that. So what are your opinions on the cam i thought of using in my 470 ? Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
