[jluetjen]

Luke;
I agree with Bobby. When you have the engine apart, get some 85mm pistons from JE with ~9.5 - 9.9:1 CR. Since you have an E; I believe that your cylinders should be Byrol which should allow a 1 mm overbore for fairly small $'s.

As far as changing cams, I'm not convinced that you'll get a huge benefit by changing the cams since your intake porting is limiting the HP. Making the engine bigger will get you more torque, but most likely not much more HP. That is unless you open the ports some (say to 38 mm across). Adding a more radical cam like an S cam with your current porting will reduce your usable torque around town (lets say at rev's below <3500 RPM), but give you noticably more torque from ~3500 to ~6500 RPM after which it will tail off. The end result will be a peakier motor without much more HP and most likely not worth the trouble unless you wanted to get a close ratio gear box and dedicate the car for track use. It definitely would be a lot less fun for street driving.