I agree that 280*/283* @ .050 is rather large for your 11.5 comp.
With a mechanical roller, something between 265/270 on the intake with .650 lift should be a better fit. IMO I wouldn't even Try to use that big cam you have, don't bother IMO.
Mikey's 470 that Pettis built w.11.7? comp has a monster(to some)cam and I think is even bigger than this one and he's flying w/an 1150 dommy I did and has a string of 6.0's and 9.50's...........My turd has 276-281 @ .050 and is an easy docile car to drive street/strip...........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
