I have 1.7 T&D's on my Indy headed small block. The cam is a Comp solid roller with .433"I/.437"E lobes, with no lash it should be .736/.743". It has .711/.719" at the retainers with.018" lash and the Pac springs. So .007" loss on the intake and .006" on the exhaust, I think it's pretty good considering the horrible push rod angle.