2016 RPM @ 60 MPH with 3.00 gears
2184 RPM @ 60MPH with 3.25 gears
2352 RPM @ 60MPH with 3.50 gears
Considering the fact that the 425 Nailhead reaches maximumum torque at 2,800 RPM, we'll go with the 3.50 gear set which will provide the following RPM's at the speeds noted using a 30" tire:
Considering the fact that the 425 Nailhead reaches maximumum torque at 2,800 RPM, we'll go with the 3.50 gear set which will provide the following RPM's at the speeds noted using a 30" tire:
2352 RPM @ 60MPH
2548 RPM @ 65MPH
2547 RPM @ 70MPH
2940 RPM @ 75MPH
3136 RPM @ 80MPH
3332 RPM @ 85MPH
3528 RPM @ 90MPH
3724 RPM @ 95MPH
3920 RPM @100MPH
While I'm on the subject of the rear, I've decided to go with a non-posi unit, as I'm not planning on doing any racing in it and feel that the single track nature of the rear end will be a more comfortable choice for the way I'll be using the car, which is primarily for casual cruising. It also saves on the overall cost, as a posi TruTrac would add about $900.
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