Joined
·
2,640 Posts
Had my first highway drive with the 265/75's and the trans did a good bit of hunting with the stock 3.55 gears. So I'm thinking about gears, but was wondering what kind of rpms and mileage folks are seeing with 4.10s or 4.56s and 32" tires?
Eventually I know I want to go up to 33's, so I'm thinking 4.56s are the way to go, but I'm wondering if that will be too much with the 32s. Right now I'm only seeing about 2k rpm at 70-75mph with the 3.55s, so a bump probably wouldn't hurt too bad, and would help keep the trans from constantly downshifting, which may improve gas mileage overall.
I already have a set of 4.10s for the 9.25, would just need to get a set for the front. Altho, I could also sell those and help finance 4.56s.
Eventually I know I want to go up to 33's, so I'm thinking 4.56s are the way to go, but I'm wondering if that will be too much with the 32s. Right now I'm only seeing about 2k rpm at 70-75mph with the 3.55s, so a bump probably wouldn't hurt too bad, and would help keep the trans from constantly downshifting, which may improve gas mileage overall.
I already have a set of 4.10s for the 9.25, would just need to get a set for the front. Altho, I could also sell those and help finance 4.56s.