My 493 makes over 500 ft/lbs from 2000 to 5000. Peaked at 600 @ 4000.

That was with an M1 with TBI and an MP509 cam. The only reason I changed the converter to a 2800 stall was because it idles at 1100 and it was banging the crap out of the drivetrain every time you shifted out of Park.

It's in a 4800 lb C-body and other than the harsh engagement it drove just fine with the stock converter and 2.76 gears. It has 3.23 now and the engine sounds happier at part throttle cruise.

Kevin