NCJL
Well-Known Member
Im going thru the gearing decision my self for a JT build.Well, hells bells and cockle shells! Looks like I’m going to be way over geared.
I have talked and read a lot recently with a few different shops that are building for 40/42’s. One place only recommends 5.38 for these builds, 3.0 or 3.6. I read that AEV recommends 4.56 for 37’s and that regearing for the ED is more important than it is for the 3.6 in regard to MPG and keeping it close to factory specs.
I’m thinking match the factory gearing for a ED Sport (3.73 with 31” tire) then bump it up once for heavy builds or down one for better MPG. From the factory the Sport w/ED has the highest rated MPG.
I have noticed the ED likes the lower gears in start/stop type driving.
I would not regear for 37’s on factory axles. I’m ordering new axles so I have a decision to make.
Sponsored