[Formulajones]

It should actually be more like 75 mph with a 26 inch tire and the .64 overdrive at 2000 rpm.

That's about perfect.

I ran that setup with 3.27 gears and loved it. Excellent for long trips on the 75 mph highways around here and knocked down 26 mpg with that car.

That's what you want with an overdrive, that's the whole attraction for it. Get your moneys worth.

I'm currently running 3.55's with a 27" tire and the .64 overdrive and it's again, about perfect. Just a little 302 chevy and it lugs just fine. 2000 is 70 mph and even with a big fat 780 holley on it I'm getting just over 21 mpg with that one. It's an excellent long distance car.