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Old 12-18-2004, 05:11 AM
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thorconstr thorconstr is offline
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Join Date: Sep 2002
Location: Tucson, AZ
Cobra Make, Engine: ERA 427" 351W
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Ant, I have a TKO600 with a .82 OD and 3.54 gears. 70 MPH is 2600 RPM. I think I will get the TKO600 with the .64 OD which will get the RPMs down to 2025 at 70 MPH. 2600 on the highway gets a bit grating on your nerves after a while. With the engine your building (I imagine in excess of 500hp) high gear will still get your attention at 2000 RPM, but if it doesn't you can always drop down a gear. I know mine gets my heart rate up in any gear. The whole decision rests on the use. If your are going to spend any amount of time on the highway, there is a lot of difference between the low 2000s and 500 RPM more in high gear for an extended period of time.
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