I take it these would be high lift, short duration cams know as "torque" cams with as small an overlap possible during exhaust closing/intake opening- thats the probably cheapest way to build up the pressure in the c. chamber, limiting factor would be the tougher springs required to follow the more rapid opening and closing lifts, that would cheaper, maybe not quite as much extra pressure as the other ways-but bound to be worth the smaller bucks. I still mention some good profiles to look at would be those "068, and "067" Pontiac grinds ('cept they're for 1.5/l.65 factory rockers-but no hill for steppers). Pretty good idling and nice boost in performance-068 was the '66 tripower cam used in the 360 hp/389 throphy GTO motors.
Good less used approach to a vexing problem!
