Who here runs deep gearing...4.88's+ (1 Viewer)

[Slowtoy]

Hey guy i'm in the market to buy some new gears for an SOA i am about to complete. It's going to be a DD for about four months untill i can get my 62 up and running and my commute is about 3 miles at 35mph. I am thinking about running 5.29 with an arb in the rear and something similar in the front. Do any of yall run this low? What can i expect on and off road?

Slowtoy

 

[alaska60]

Wow.......5.29's..???
I run 4:56, and I think I'm low.....I think 4:88's would be where you want to be. Unless your running 44's or some other huge tire.
Curious to see what other say.....

 

[Randy88FJ62]

I bought 4.88's to run with my 35's because that was close to stock gearing. I have not installed yet so I cannot comment from experience just yet.

 

[82fj60bigblue]

I run 4.88s with 37" tires. Kinda high RPMs on highway, but at 35mph your fine. I am going to get a h55 to solve that problem. Mine is a DD

 

[landcruiserjunky]

one day I'll have 4.88s, one day

 

[Slowtoy]

I am running 35" tires right now and moving to 37" soon, what would be the benefit of running 4.88+ gearing?

 

[BGarcia88FJ62]

Had 4:88's installed before going to Arkansas for the "Cruiser Crawl".
I could really feel a difference on trails. The interstate is a different story truck is screaming for a h55. 3K rpm 60-65 mgh puts gas milage in the toilet.

 

[CruisinFJ60]

on my 60 with the 4.56's and 35 it was liek stock gearing and spedo was dead on on the freeway (checked with GPS) now im on 33's and rpms are a little higher on the freeway but not to bad but in all honesty offroad i wish i had more gear and wished i woulda done 4.88's

but since i plan on running 37"+ tires now im gonna run 5.29's, actually id liek to run the 5.29's with the 33's just to see how it crawls i know the freeway ill be way slow and rpm's high but this truck doesnt see the road much so im not worried, and with the 37"+ it will bring gearing back into par wich will probally force me into a toybox or something cause you can never go to slow.

 

[PPFJ60]

I ran 4:88's with 36's and just switched to 37's but I also have 383 V8 with 700R4 automatic with overdrive. 75 MPH and the RPM's are about 2500. Also installed an NP203 doubler so low end gears are not a problem. Sometimes the brakes won't hold it in double low and 4X4. No problems with the brakes on the road.

 

[accasbel]

I have a stock 62 engine & tranny, with 35's and 4.88 gears. Good combination.

 

[Slowtoy]

Im running stock motor for the most part, sounds like i might be forced into a toybox if i decide to go deep, like you said Cruisin, i just am a firm believer in slow, slow, slow. I think i might run the 4.88's for a few months untill i can dedicate the rig solely to the trails. Except gears are expensive.

 

[sl33py]

I'd like to go to 4.56's with 33's and possibly 35's on my 84 60 w/ h55f. My only concern is if i eventually go diesel (3b, or 12ht) Would it be too low geared for freeway?

 

[REKCUT]

I think you will find 5.29's to be very low for DD. I run 4.56 and 35 and its good. I have a toybox or I would have gone to 4.88. The other part of the equation is the arb and the 5.29. I had to grind off the gears to get the pin to fit with 4.56. I understand you have to grind a lot to get 4.88 and 5.29 will be a big job.

 

[Randy88FJ62]

I did not have to grind too much off to get my ARB in with the 4.88's. Only time will tell if it actually becomes a problem.

 

[Slowtoy]

Time will def. have to tell...is there a better option for running 5.29's with another locker brand like Detroit or Aussie? Or will it still interfere aka grind'n to fit the locker in?

 

[Dirtgypsy]

4.88's with 35's and H55F is what I have been running and am very happy with it. I crawl just fine on most trails and the highway is not too bad.

 

[sl33py]

4.88's with 35's and H55F is what I have been running and am very happy with it. I crawl just fine on most trails and the highway is not too bad.

Dirt - ooh... just what i want to do...

I re-read your ROTW (sweet truck and love that vid). Stock 2f right? 4.88's and 35's? 4" OME w/ SR - anything else to clear the 35's?

And what's "not too bad" on freeway with h55f? What RPM's @ xx MPH?

Thx!

 

[zander]

I am running 4:88s with BFG 33s, a 12h-t diesel A440 transmission (redone by Extreme Transmissions in Australia).

I am happy with the combo. The speedo comes out within a few MPH to dead-on (reads about 3mph fast at 65MPH according to my GPS). I cruise the highway at 2500 RPM which equals about 65-68 MPH, and am able to do that for 6-12hrs straight across California and Nevada. I do use a tranny cooler which I would recommend for any auto trans on these that wants to do sustained highway speeds especially in the desert.
.

 

[motoloco]

Check randys ring and pinion calculator. I have 35's and 5:29's in my 62 and it is nearly identical to stock, maybe 5% deeper, but that is a good thing with added rolling resistance. Great off road and great on the hiway. For a fj60, 4:88's and 35's would be fine. Now I am swapping to a H55 5 speed and it will be too deep for 35's, I will be forced to go to 37's

 

[CruisinFJ60]

Time will def. have to tell...is there a better option for running 5.29's with another locker brand like Detroit or Aussie? Or will it still interfere aka grind'n to fit the locker in?

still gotta grind a little but its not major