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- - 1997 K10 gear ratio code?? (https://67-72chevytrucks.com/vboard/showthread.php?t=477565)

Alan's Classic

08-01-2011 10:57 PM

1997 K10 gear ratio code??

A friend of mine needs a rear end for his 1997 K10. Other than spinning the tires and counting is there a code some where on the axle itself that will tell me what ratio it is? If so, where is it located? The code sticker is still in the glove box if that helps. thanks

ChevyTech

08-02-2011 09:44 AM

Re: 1997 K10 gear ratio code??

Look at the “RPO” codes on the sticker in the glove box.

Axle ratio by RPO code

GU2 = 2.73
GU4 = 3.08
GU5 = 3.23
GU6 = 3.42
GT4 = 3.73
GT5 = 4.10

G80 = Eaton Gov-Loc limited slip unit

Alan's Classic

08-02-2011 11:20 PM

Re: 1997 K10 gear ratio code??

Quote:

Originally Posted by ChevyTech (Post 4823659)

Look at the “RPO” codes on the sticker in the glove box.

Axle ratio by RPO code

GU2 = 2.73
GU4 = 3.08
GU5 = 3.23
GU6 = 3.42
GT4 = 3.73
GT5 = 4.10

G80 = Eaton Gov-Loc limited slip unit

Thanks for the great info. I looked and it is GU6.

ChevyTech

08-03-2011 09:17 PM

Re: 1997 K10 gear ratio code??

You're welcome!

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