Cam Experts: Lobe Separation Angle?
Based on what the OP put up first, then says Oh I was going to put a blower on it, makes the cam recommended by Ken sensible.
Carry on about how the 4 speed cam was so great. They were small, like most every mopar camshaft, compared to the other majors at the time. Dinky stuff.
The majors also were beginning the emissions era and had to take that into account when engineering this stuff. I'd bet money that if they wanted the stuff to run better that cutting that cam or the std 340 (on a 112 IIRC) wouldn't have been the final decision.