you know its going to come down to testing and how your combination likes whichever cam .
I am at 272/272@0505 , .600 nett , 108 lobe separation .
I am a hair off where I thought I should be for my sixty , transbrake . But at around 400lbs heavier and 30"radial I feel mine is running fine .
You may even just need a bigger stall converter , mine is 6000 . It was speced as a 5700 by A1 when I had stock port heads and stalled right around that . TF270 heads , more power slightly bigger stall .


Tex