Chevrolet Avalanche 5.3 3.73 rearend gear swap to 4.10?

btcorral

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I tow alot 400 plus miles at time 20 times a year and in the hills my truck drops to second gear. Trailer is in the 6000lb range I am not as concerned with mileage as I am with burning up the transmission Will changing to the 4.10 give the added power I am looking for
I would like to add I really like this truck and trading it in is not part of the equation........this is quite possibly my favorite vehicle ever and I have had alot of them (30+)
 
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