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GeorgiaDad, I sincerely apologize for not replying to your post earlier. Somehow I missed the one from 2/7, and didn't see it at all until today's update. I'll try to answer your questions, best I...

How about a 4.6 Mod Motor, or a 5.0 Coyote, or a 5.0 SBF? It's not a '29 Chevy, is it? :confused:;):LOL:

GADad,
To run the numbers take (MPH x Rear gear x 336 x OD ratio)/ Tire Diameter Inches to give you cruise RPM. For example, at (70mph x 3.00 x 336 x 0.73)/30" yields 1717 RPM. The "336" is a unit...