I am new to this site. In search of help,with tuning my 1992 GMC Sierra 1500 5.7. We just rebuilt the motor, changed it for a roller cam, using the 1996 Vortec heads studded with pro magnum rockers, Comp cams small camshaft kit, forged pistons, rebuilt transmission with bigger drums and better clutches and bands.

How owe can I tune this thing? Any help would be great. What do I need? I looked into Jets Performance Chips. But haven't purchased anything yet.

Thanks