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Is anyone offering gears for a 5.3 and where do I find my current rati


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Looking to get 3.73 or 4.10s. Ready to pull the trigger but I can't find anywhere. I've tried google and local performance places and they can't offer me more than an intake and exhaust. Also, where do I find my gear setup from the factory. I have a 5.3 reg cab. 2wd

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GU4 Rear axle, 3.08 ratio
GU6 Rear axle, 3.42 ratio
GT4 Rear axle, 3.73 ratio
The are engine and trim restrictions on which ratios are available.
You can look up the RPO codes on the sticker in the glovebox.

GU4 Rear axle, 3.08 ratio
GU5 Rear axle, 3.23 ratio
GU6 Rear axle, 3.42 ratio
GT4 Rear axle, 3.73 ratio
The are engine and trim restrictions on which ratios are available.
You can look up the RPO codes on the sticker in the glovebox.
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Maybe it was 3:42 then. I was looking on window sticker. I'll double check when I get home

Look at the RPO code...window sticker will show stock configuration on the left and final options on the right. Sometimes confusing, but ROO code is easy and clear.

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you cant get a 4.10 rear on any truck from the factory and the best you can get with the 2wd on a reg cab is 3.42.

 

There is a thread where a guy swapped gears. He had to use an adapter I think.

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