rear gears
09-14-2005, 06:48 PM
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Location: central new york
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Car: 1989 iroc z
Engine: 305 tpi
Transmission: 700r4
rear gears
hey, i have a 1989 irocwith 305 tpi and 700r4, it has the stock 3.23 posi, i am planning on installing 3.73 gears in the rear. first has anyone else put in 3.73s and how good is it? and would i have to install a different speedo cable or maybe a gear? it would change the speedo read out right?
09-14-2005, 11:18 PM
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Car: '94 Z28
Engine: LT1 350
Transmission: 4L60E/A4
Lots of people have done it and they all say they love it. Your RPM will be higher and you're speedometer will be off by maybe 2 mph. You'll need a different driven gear in the tailshaft of the transmission. Which one forsure, i don't know, there's other people on this board who can help with that.
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