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iroc speedometer gears

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Old Sep 26, 2006 | 08:13 AM
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iroc speedometer gears

I swapped out my 2.77 rear for a 3.29. Does anyone know what speedometer gears I need to get the speedometer correct?
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Old Sep 26, 2006 | 09:42 AM
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From: Sophia, NC
Car: 2016 Camaro SS + 1986 Z28
I did the same swap.

...I don't remember exactly what combo of gears I used (had to change 'em both) but I bought them from this place:

Speedometer Gears, Speedometer Gear, Ford, GM, Dodge 700R4

...just use the calculator to figure out what gears you need.
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Old Sep 26, 2006 | 10:20 AM
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I might be blind but I didn't see a calculator on that page
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Old Sep 26, 2006 | 11:59 AM
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From: Sophia, NC
Car: 2016 Camaro SS + 1986 Z28
Speedometer Gear Computation
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Old Sep 26, 2006 | 01:36 PM
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From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
TCIŽ
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Old Sep 27, 2006 | 04:06 AM
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I found what I needed. Thanks for the help. When I was searching I found a nice calculator on Bowtie Overdrives. It only needed the tire size and rear end ratio and it computed both drive and driven gears.
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