[Bigdav160]

If the stall speed of the converter is too low for the design of the vehicle's engine you'll need a firm foot on the brake pedal as it'll be pulling hard at a stop. Also torque in is torque out so a converter can stall at different RPM depending on the engine in front of it.

I think most GM V8 converters stall between 1600-1800 rpm. That should be appropriate for your engine.