If your engine is in top tune with no restrictions, I would guess somewhere at 390 hp and 338 lbs. of torque. One restriction is the intake. Off idle to 5500 and the camshaft rpm range is 1500-6500. The engine dies at 5500 rpm instead of making power til 6500. Get the performer RPM intake 1500-6500 RPMs
Last edited by cdminter59; 08-05-2012 at 11:26 PM.