Got off the phone with summit racing techs and they said with Eaton e lockers (30 and a 44) and revolution gear chrome moly axle shafts and 51/4 lift I should be able to run 37’s….. anyone disagree?
Eaton e-lockers and 37’s
- Thread starter gatertamer
- Start date
Most here will disagree. Dana 44s (even built) aren't suitable for 37s.
To run 37s and to it right you need Dana 60s.
To run 37s and to it right you need Dana 60s.
speeding_infraction
TJ Addict
I just ran Fordyce Trail during Sierra Trek and talked with one of the trail guides about which jeeps have the most problems. He said as far as TJ's go the ones running 35's get into less trouble than the ones running 37's. He felt 37's are to much tire for a standard TJ, the ones on 37's do well if its been stretched TJ but not a stock length. They see more TJ's on 37's flop over then the ones on 35's. Not my opinion just a guide that see hundred of TJ's over his time on the trail.
Not if you plan on using it off road , that setup would be sketchy on the street only.
I’m curious as to your thinking on that, stronger diffs….stronger axles…everybody knows 35’s are the limit for stock diffs why you think it wouldn’t work off road?
All right all right I get the picture…you can’t put anything bigger than 35’s on a tj no matter what the set up thanks for the input…appreciate it
Weight would be one concern , Plus your front D-30 IS stock with a locker . The front axle C's and ball joints would likely be strained to failure the when pushed off - road. Your current axles are geared too high , ( In my opinion ) for the current 35". 37" tires would make this even worse. I'm curious as to why you want to increase tire size , and If your current 35" tires are some how limiting you. There are many different types of off roading , and maybe you could get by for a little while going to 37's . However you would be sweating bullets the first time you had to lean on your TJ hard to get through an obstacle . I hope your build goes well for you .
Looks like a good southern mud machine to me. 37's might be too small for the mud around here.
speeding_infraction
TJ Addict
Hell, I got 4.56s on mine and wish I had 4.88s... or maybe my engine is just gutless
Deeper gears would feel better , but higher drive shaft speeds have highway issues also . At some point a Jeep is a Jeep and will have some type of issue.
The TJ's modded for great off road use , finally end up being near useless on the highway , and get hauled around on a tandem trailer behind a Cummins dually.
speeding_infraction
TJ Addict
Deeper gears would feel better , but higher drive shaft speeds have highway issues also . At some point a Jeep is a Jeep and will have some type of issue.
The TJ's modded for great off road use , finally end up being near useless on the highway , and get hauled around on a tandem trailer behind a Cummins dually.
Well, mine just started getting death wobble after beating the shit out of it at windrock, and buying a trailer is less hassle then fixing it, so it's gonna get towed behind a Cummins, but only an SRW
I'm going to have to disagree with that statement. A good built set of 44's will be very capable of 37" tires. My ECGS 44's are capable of up to 40's per ECGS. They do have gusseted C's, 3" x 1/4" tubes, and JK center section so they are not a standard TJ 44. I do know of a TJ with Rubicon 44's that have been trussed that have handled 37's for years without issues.
To the OP, Summit is lying to you. Call someone like ECGS and talk to them.
Anyone that says TJ ball joints can handle 40" tires is a liar and you can quote me.
They aren't standard TJ ball joints either. They are bigger in diameter where they go into the C's.
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