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08-23-2010, 08:56 PM
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MOTORHEAD!
Join Date: May 2000
Location: Devon AB, Canada
Posts: 849
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How do you calculate your gear ratio?
My old mans truck revs at 3200 or something @ 65mph with a 28" tire... When he jacks the back end up and gives the wheel a turn, the driveshaft only turns about 1.8 times... I ran his numbers through a calculator and it said 4.10, so why does the driveshaft only turn 1.8ish times?
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82 GMC High Sierra VortecPro 496 12 Bolt, 3.42's AFR 265 Holley 850 Performer RPM Air Gap Hooker 2455's TCI Turbo 400 Super Street Fighter TRRC 12 Bolt Eaton Posi Mark Williams Axles Cal-Tracs Hoosier 30x10.5 Radial Slick Full weight long box pickup Current best- 11.33@117mph |
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