3.6 with the IA supercharger running 4.5-5 lbs of boost. I only drive the car for fun on and off the track and it has never been nor will ever be a DD. I am willing to do the valve springs and the cams while the motor is out and my guy is willing to flow the heads but said more then likely not needed. I know that the 3.8 X51 has larger valves thus the guides would need to be increased but again my tech said it is not really needed. I already have the AASCO ligt weight flywheel for it and the tuning like my current package will be a one off. The current tune was done by Garret of GIAC. Stephen Kasper of IA will have the next one done. I am looking 400+ or - on pump of reliable HP.
I am being told that I can continue to run my 7.2 system with the 7.8 motor through the magic of tuning, but I am not holding my breath on that one.
Last edited by JP-s-in st. louis; 10-28-2008 at 07:43 PM.
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