I just put new heads on and i was wondering what my compression ratio went up to and how much my Hp and torque increased. Keep in mind with the old head i had 9.1 to 1 compression with 76cc chambers.

4'' bore 3.48'' stroke
Flat top pistons
Aluminium heads
190cc intake runners
64 cc chambers
2.02'' intake & 1.6'' Exhaust valves
The head gasket is .039''
1.5 Roller rockers
750 cfm holley
Stage 2 summit, Dual plane, Square bore intake
Cam
Crane 114142
Duration @.050
Int 216
Exh 228
Lift
Int .454
Exh .480
Hei Distributor
Headers to an H pipe then to 40 flowmasters


Just trying to get a idea of what power i have now.
Also, is it true that with Aluminium head you loose some compression compaired to iron heads?

Thanks