Just add a point of reference to this discussion. My 360 is 30 over with zero decked KB107 pistons. I have stock magnum heads and run a Comp XE268H cam (224/230 @ 50, .509/.512 lift with the magnum 1.6 rockers). I have a high rise dual plane intake, 600 CFM vac secondary holley, 1 5/8 headers, A833OD and 3.55 gears.

This combo is making approximatley 370 HP based on 102 mph trap speed.

Dave Clement Pembroke, MA 03 PT Cruiser GT Turbo 99 Dakota SLT+ CC 4x4 68 Barracuda sport coupe http://home.comcast.net/~dgc333/