Well said. The things the Commando/Charger engines had going for them that made them rev, solid lifter cam,dual point, single plane intake and 4 barrel. The standard 2 barrel parts and hydraulic cam will run out of steam at a lower rpm. I think that's what the op was getting at. How far does it rev b/4 it runs out of steam. 5000 rpm. I'll run some numbers in a bit.