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Re: 1971 GMC with manual 4 spd-what is the stock ratio???
Quote:
Originally Posted by 57rookie
It is a 1/2 ton 1971 GMC. I was hoping for the 3.07!! I dont want to pull the cover off as it is very original and no leaks...
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That would suggest the fluid was all original. And I'm pretty sure that it could use a change, a fresh gasket as well as a pinion seal...
Rear diffs are typically abused in the sense they get zero maintenance until they are broke or worn out.
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44 Willys MB
52 M38A1
64 Corvette Coupe
68 Camaro 'vert LT1 & TH700
69 Z/28 355 12.6's @110
69 Chevy Short Step 4 1/2"/7" drop
72 Jimmy 4WD 4spd 4" & 35's
02 GMC 2500HD 4x4 Duramax
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