3.08 to 3.73 nv3500

[C1500Atx]

I have a 97 scsb 5.7 and nv3500 transmission. I use the truck for day to day use and would like to start towing my race car. Would a 3.73 swap be of benefit to me? Would just get 10 bolt diff off junkyard truck to swap over. I think I would be towing approx 5,000 lbs. (nissan 350z and normal steel trailer)

 

[RichLo]

Absolutely and super easy Saturday project too if you dont have to open up the diff.

 

[df2x4]

It would definitely help. If you're already going to the trouble to swap rears though I'd at least consider upgrading to a 14 bolt for the sake of durability.

 

[90halfton]

I swapped my 3.08s out for 3.42s when I rebuilt mine and it made a significant difference pulling a trailer, and not pulling a trailer lol. Not enough change to kill hwy mileage but enough to make it feel right. 3.73 will probably be the way to go if pulling a car on a car trailer all the time.