Rear gear and speedo change
8/2/04, 11:45 AM
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I recently install 3.55 gears in my 85 GT. The car has a 5 speed with the stock sized tires 225/60R/15. Of course my speedometer was way off with the gear change. The factory speedometer gear is a 16 tooth. I installed a 20 tooth but it still seems like I'm off by about 5 or 6 MPH. Will a 21 tooth get me close or am I destined to have an F%$&$-up speedo.
8/23/04, 12:23 PM
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8/25/04, 10:15 AM
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Turns out all the sites that call for a 20 tooth speedometer gear to match with 3.55 gears, 225/60R/15 tires, and 5-speed were wrong. I had a cop hit me with the radar gun and I was 5 MPH slower then my speedometer read. Threw in a 21 tooth and now I'm right on.
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