... My main concern is the 3-4.5k range, where the 261 and 252 are nearly identical. This is the high-altitude interstate pass-climbing range. Since my gearing is so low I am not concerned with torque under 2k.
Yes, I see they are nearly identical numbers in that range, with the CC252S pulling a little harder between 4300 to 4800.
Look at the torque numbers for the Compcam and the 261C between 2500 and 3500 RPM. THAT is the reason I am interested in the CC252S! Of course, those are just numbers out of computer program.