damn..confused about speedo gears
05-14-2006, 01:59 PM
#1
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Car: 1991 Z28 Convertible
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 with Eaton posi
damn..confused about speedo gears
This should be so easy but I think I am missing something.
When my pinion seal blew, I dissassembled my rear-end and discovered that I had a 3.42 open with 26 spline axles in a axle from an '89. Strange seeing that I am supposed to have 2.73, 28 spline open rear and I am the 3rd owner of this car (neither of the 2 previous owners know anything about a rear end swap and the 1st owner bought it at the dealership).
Anyway, I had 3.23's installed and I need to swap speedo gears.
All the calculators need to know your drive or driven gear teeth number to calculate the other. The truth is that I dont know either.
I am riding on 245/50/16's.
Whats the solution????????
When my pinion seal blew, I dissassembled my rear-end and discovered that I had a 3.42 open with 26 spline axles in a axle from an '89. Strange seeing that I am supposed to have 2.73, 28 spline open rear and I am the 3rd owner of this car (neither of the 2 previous owners know anything about a rear end swap and the 1st owner bought it at the dealership).
Anyway, I had 3.23's installed and I need to swap speedo gears.
All the calculators need to know your drive or driven gear teeth number to calculate the other. The truth is that I dont know either.
I am riding on 245/50/16's.
Whats the solution????????
05-14-2006, 05:39 PM
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Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Remove the speedo cover and see what color either gear is (drive or driven) - they are color coded - then you can get the other gear calculated. Tilt the car up from the rear to reduce the fluid loss.
05-15-2006, 06:49 AM
#3
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Car: 1991 Z28 Convertible
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 with Eaton posi
Do you have to know what one or the other is first? Or was there a standard drive or driven gear used on all gm f-bodies?
05-16-2006, 09:28 PM
#4
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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
take a look around this site
700R4, 700R4 Speedometer Gears, 4L60, 700R4 Speedometer Calibrations, 700R4 !
700R4, 700R4 Speedometer Gears, 4L60, 700R4 Speedometer Calibrations, 700R4 !
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