Cleveland and dyno experts

[rdorman]

Want to get a bit more power out of my Cleveland. It DVSFII I had the car on the chassis dyno. The engine is a 40 over, balanced and blueprinted, keith black pistons about 9.3 to 1, performer 4V intake, arizona exhaust pipes, cam specs
CAMSHAFT SPECS (From label on cam box)
Effective @ .050 Lift
VALVE Intake Exhuast Intake Exhuast
Lift (net) .510 .536 --- ---
Duration* 292 302 214 224
Opens 34 83 0
BTC 49
BBC
Closes 78 39 34
ABC -5
ATC
Overlap 73 Timing is net

On the dyno the car was running very lean. I beleive that is was because the intake manifold gaskets where sucking air and oil from the lifter valley. It was very obvious when I changed the gaskets. The car made 323HP and 354 torque to the rear wheels through a toploader and jag rear. Torque curve was very broad and peaked at about 3500.

HP peakes at about 5300 where it remained the same until 6100. By 6500it was down almost 50HP. This is where I think I can get more. I think the car is under carburated with a 600CFM vacuum secondary holley. Looking for suggestions and experience on a larger carb for this package. Also, I was wondering how much HP I would actually see by going to roller rockers.

Suggestions?

Thanks
Rick