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#1 |
Mustang Addict
Join Date: Jan 2001
Location: McKinney, TX
Posts: 1,294
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![]() The speedo reading is proportional to the gear ratio.
77/70 = gear ratio/3.27 So if you don't have a SpeedCal or something that would mean your gear ratio should be 1.1*3.27 = 3.59. So it actually sounds like you have 3.55s based on your being 10% off. Anything steeper and your speedo would be off more. I have no idea why anyone would swap in 3.55s though - 4.10s all the way!! Are your back tires stock height?
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Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s |
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