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Discussion Starter #1
I have a 2008 Silverado 1500 5.3L with BTR stage 2, and my rear end needs a rebuild. I do a lot of towing of a 9000lbs travel trailer on long drives. Would it be beneficial to change the gear ratio or stay with stock 3.73? If change what ratio?

thank you for the help
 

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What tire size do you run?

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4spd or 6spd?
Not sure when they made the change

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That tire is roughly 34" tall. I would go 4.56 but you could get away with a 4.10.
I tow roughly 8-9k with my wifes Tahoe and 315s, 4.56 gears.
It did well with the stock motor but it was a huge difference with the cam, intake and milled heads.
I couldnt imagine having less gear, if anything I would like to have 4.88s

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Discussion Starter #7
That tire is roughly 34" tall. I would go 4.56 but you could get away with a 4.10.
I tow roughly 8-9k with my wifes Tahoe and 315s, 4.56 gears.
It did well with the stock motor but it was a huge difference with the cam, intake and milled heads.
I couldnt imagine having less gear, if anything I would like to have 4.88s

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thank you
 

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Discussion Starter #8
Just got rear end rebuilt with 4.56 gears. Looking at doing a torque converter as well. will all the towing would a 3600 stall be too much?
 

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Trans temp would probably get pretty toasty in town but it would work
 

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What size is the converter diameter wise?


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