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Old 04-26-2019, 10:13 AM   #1
bigmoe
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What possible gear ratio? 70 1/2 ton

Any idea what the gear ratio might be for a 70 1/2 ton with a 6 cyl std trans? It might have been a 3 on the tree but I see an aftermarket floor shifter in the pictures. Is there any way to tell by data plate? or do I have to look for stamped numbers on the tube?

The truck is a distance away so I'm wondering if it's worth driving to check the ratio. I want a 3.73.
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Old 04-26-2019, 10:58 AM   #2
Travisarmenta
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Re: What possible gear ratio? 70 1/2 ton

Quote:
Originally Posted by bigmoe View Post
Any idea what the gear ratio might be for a 70 1/2 ton with a 6 cyl std trans? It might have been a 3 on the tree but I see an aftermarket floor shifter in the pictures. Is there any way to tell by data plate? or do I have to look for stamped numbers on the tube?

The truck is a distance away so I'm wondering if it's worth driving to check the ratio. I want a 3.73.
https://www.gmheritagecenter.com/doc...olet-Truck.pdf

Scroll down to Page 20.
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Old 04-26-2019, 11:17 AM   #3
bigmoe
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Re: What possible gear ratio? 70 1/2 ton

Thanks! According to the chart the 3:73 is standard on a 6 banger.
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Old 05-04-2019, 06:21 PM   #4
big_al_71
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Re: What possible gear ratio? 70 1/2 ton

What he said ☝🏼
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