SPEEDOMETER CABLE GEAR

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Bruce Compton

Greasemonkey
Jan 17, 2010
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Does anyone Know what speedometer cable gear would be used for a 78 Monte Carlo with a Saginaw 4 speed and 3.23 rear gears? I am changing from 2.73 rear gears to the 3.23`s. The motor is a 305.
 

ELCAM

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Jun 19, 2021
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Oldcarjunkie

Greasemonkey
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Feb 4, 2022
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Speedometer gears are color coded to match the rear axle. G.M. parts dept should be able to look the correct gear for you.
 

ELCAM

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Jun 19, 2021
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In 1978 the M20 was your Saginaw 4 speed.

78 Speedo 1.jpg

78 Speedo 2.jpg

78 Speedo 3.jpg

78 Speedo 4.jpg
 

Oldcarjunkie

Greasemonkey
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Feb 4, 2022
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I believe the speedometer gears were the same for any of the 4-speed trans. Saginaw,T10,M20 etc.
G.M. parts should able to tell you what you need with out the guess work. Just need too tell them what rear gear you're using.
 
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