Gidday guys , just signed up .looking for help with cam gear timing on Rb30 turbo. I bought a wrecked VL Turbo and transplanted the whole drivetrain into my Berlina,all has gone well. Last week fitted new TO4E ,and blew the head gasket with aboost spike,changed the head gasket ,set cam gear to standard marks and started it up ,runs well. took it out for atest and it seems to have lost or moved its boost rpm up about 600 ,it used to boost 3000 now its easy 3600 . Apparentely the motor did produce good horsepower before the car was wrecked 220rwkw so it may run a cam,if thats the case .atooth forward might be the go ,anyway can anyone give me any advice . cheers mick