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Old 07-09-2002, 06:58 PM   #1
o2superstang
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Join Date: May 2002
Posts: 24
Default RPM difference between 3.73 to 4.10

Using the formula;
Gear x 336 x MPH divided by tire diameter x .68 (overdrive)

There is a 232 RPM difference between 3.73 and 4.10's at 70 MPH.

How much worse gas milage could 232 RPM be????


3.73 x 336 x 70 divided by 25.5 = 3440 x .68 =2339 rpm
4.10 x 336 x 70 divided by 25.5 = 3781 x .68 =2571 rpm
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