im rebuilding my diff and i was wondering what would be better? 3.90 or 4.10 i dont go much to the track but i do alot of driving and i do drive fast alot also....what would be the best bet for my dd 02 chevy silverado 5.3 with a 3/5 drop and on 22's with a 265/35/22 tire?

 

3.90's. I run them with a 29.5" tire. I run 80-85 on the freeway and get 17-19mpg hwy. It's a good gear inbetween 4.10/3.73's for your tire size and driving style.

 

X2 on the 3.90's.

 

dont fear the gear

 

with heavy 22s (which i have as well) go for the tens man. The difference in rpms is going to be minimal and you need that low end with the heavy rims. 4.10 gears has been the best mod i have done so far