speedometer gear? - Club Cobra

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#2 (permalink)

11-17-2003, 05:38 PM

Bob In Ct

Senior Club Cobra Member

Join Date: Mar 2001

Location: Southern Connecticut, CT

Cobra Make, Engine: SPF - 351W, 944 non-turbo

Posts: 2,105

Not Ranked

Hey Fletch:
I need a little more information. What tires are you running in the back?

If it's a 275/60-15 the calculation would be as follows -

Driven Gear Teeth = (Drive Gear Teeth * Axle Ratio * Tire Revs per Mile) / 1000

DGT = (7 * 3.1 * 745) / 1000 = 16

The part number is C0DZ-A from Ford (assuming the tire size I used).

Bob

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