1800 to 3500 seems great the way I have the engine set up currently.
Greatest torque in the 2000-2800 range, but that's seat-o-the-pants, not
dyno tested.

Tom Forhan wrote:
> Karl, just curious with your gearing: what are the
> optimal operating revs for your engine - comparable to
> the green area on the stock 2.1 tachs?