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Old 12-06-2017, 09:45 AM
2bars 2bars is offline
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Join Date: May 2012
Location: Wickenburg, AZ
Cobra Make, Engine: Superformance, 427 FE
Posts: 197
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I spent time on the rpm/trans calculators with regard to the 5th gear ratio. And read every post on here I could find on the subject as well as consulting with Charlie.
I am going with the .64. Here is why. My rear axle is a 3.73. If I drive around my town, speed limits are 35-45. When I leave town to go to Phoenix or Prescott the posted speed limit is 65. This means I drive around 70-75 just to cruise. This keeps the RPM's around 21 to 2200 witch is good for gas mileage....kidding..kidding

The trans coming out was a .68 and I was not disappointed.

I am still back and forth on the tires.
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