Transmissions and Drivetrain Need help with your trans? Problems with your axle?

speedo gears for 3.45 9 bolt?

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Old 05-14-2006, 11:57 AM
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Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
speedo gears for 3.45 9 bolt?

I have a 9 bolt, and dont have the original trans that matches to get either a drive or driven gear to be able to calculate what I need online. I need to buy both a drive and driven gear to match the 9 bolt and I have stock 245/50/16's. Can anyone tell me what the tooth count is? Colors and part numbers would help me out alot too!

Now all I gotta do is figure out how to work the VSS on my 4L60-E for the PCM to shift. I'm thinking of using one of those differential mounted VSS sensors and reluctor ring from jagsthatrun.com, but I'mnot sure how well that's going to work with the torque arm. Any suggestions?
Old 05-16-2006, 09:30 PM
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Car: '86 IROC, black and sharp
Engine: 305 tpi, bone stock
Transmission: 700r4
Axle/Gears: 3.42 pos w/rear db
try here for info

700R4, 700R4 Speedometer Gears, 4L60, 700R4 Speedometer Calibrations, 700R4 !
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