Well I seen a 250 would rather run free and turn a little more rather than getting too far down in the RPM range. they don't like to have to work all the time. One I messed with was an intergal head stock motor and got 22-23 mpg with 4;11 s and went to 17-18 with3;42 s. That one belomg to my friend thats always at Cedar Rapids with me. I think you've met him Tom.
