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Old 07-11-2003, 07:35 PM
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tvpierce tvpierce is offline
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Join Date: Feb 2002
Location: Portland, ME
Posts: 612
A higher number will give you higher revs (and consequently better acceleration). The drawback is that your engine will rev higher at cruising speed. So you're fuel economy will decrease, and your engine will be louder at a given speed. Additionally, your speedometer will be inaccurate if you change from your original gearing.

In the case of a differential with a gear ration of 3.69/1 ("3.69 to 1"), what the numbers are actually telling you is that the wheels will turn 3.69 revolutions for every 1 revolution that the driveshaft turns. So a differential with a "higher" number is said to be geared "lower".

Hope that helps.

Jeff Pierce
Jeff Pierce

Current Vehicles:
'92 Mercedes 190E/2.3 (247K miles/my daily driver)
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'85 Jeep CJ-7 w/ Fisher plow (226K miles)'93 Volvo 940 Turbo Wagon
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