DeuceCoupe,
Your figures are right on. I calculated my RPM's using my Classic Instruments Electric Speedo that was calibrated to my drive train and rear tire profile. The height of the drive wheel and tire will have a direct ratio to the final rpm. I had several new vehicles pace my Coupe for several miles to get an average consistant MPH reading. I then flipped the DIP switches on the back of my speedo to calibrate my trure MPH.
With my warmed over 292, T-5, 3:55 10 bolt rear and 31" tall tires, I calculate 1925 RPM's at 65 MPH. My mileage varies as do the road conditions and driving habits. Normally around town, I'll get 16-18 MPG. In car show cruising the grounds, 14 MPG. True highway traveling, 350 miles of fairly level and some hilly roads without stopping netted 22 MPG!
RapRap
1940ChoppedChevyCoupe
