If you're comparing back to the MM305 flat tappet cam then the lift isn't that different. The MM305 is a big cam with .650 lift on both intake and exhaust at 1.50 rocker arm ratio. So really this roller cam picked up 60 hp over that flat tappet cam even though the duration at 050 was down a bunch and the lift was basically the same.

I did change the intake manifold from an Indy 440-2 to a Super Victor and I ran the motor as a dry sump, but the oil pan was the same exact pan. Everything else was basically the same.