10.5:1 496 chev., SRP pistons, 6.385 rods, single 1050 carb, Dart 310 heads...what cam should I run? As much as I'd like to call chris and have him grind me one...that's not in the budget right now.
I've got 2 sitting on the shelf.
.672 lift (in & ex), 306°/312° adv., 266°/272° @ .050, 112° LS.
Cam #2: Lift
In - .706
Ex - .697
In - 268° @ .050
Ex - 275° @ .050
Lobe Sep - 109°
Intake Cent. - 105°
One cam is going into my old motor to get sold, the other is going in a fresh one for the new float.
Additionally, There's a lot of room on these heads to play with compression...so I was gonna try and find the closest thing to a flat top I could find and mill the heads to get to my compression mark.....or shoudl I leave the heads alone and put some decent domes in there. Does it matter? I always figured flatter pistons required less timing and should make more power without having to chase the flame around the dome.
This is for a Jet boat...Cam number one in a 10.5:1 489 w/ 2 660s on a TR and ported 990 heads turned a A/B to 6000-6100. I'd like to do better than that on this new motor.