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Old 04-09-2014, 02:30 PM   #1
Sklptrljay
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Can someone help me decode a SPID (gear ratio)

I called a guy about a rearend and he's not sure what he has. He gave me this code from the SPID; 4680AF.
It's from a 1/2 ton 69'.

Hopefully somebody can give me the info on this. Thanks.
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Old 04-09-2014, 02:40 PM   #2
bruceman1968
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Re: Can someone help me decode a SPID (gear ratio)

4680AF=4G80AF= G80 posi trac.
Sorry don't know what ratio.
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Old 04-09-2014, 07:12 PM   #3
Sklptrljay
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Re: Can someone help me decode a SPID (gear ratio)

Thanks, the guy doesn't want to look under the truck for me. I'll try to get out to see for myself this weekend.
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Old 04-09-2014, 08:18 PM   #4
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Re: Can someone help me decode a SPID (gear ratio)

If you know the original rear end is still in the truck what engine and trans was it built with because because I can check a chart for you and tell you what it was buolt with.
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