RB 180 Headers tight fit

I've got a similar cam in one of my 440s with the exception of lift.
The duration is what determines the rpm curve and torque and peak horse power. My combo is a 440 but the rpm of peek torque and horse power should be at very similar rpm. Torque peek at 4500 and horse power at 6200 rpm...
I believe that cam is too big for the low compression ratio, something with 225 duration @ 050 lift will work better.