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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Fate,Texas
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

Royal Smart Person
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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