Let's fight about 4.88 vs 5.29 gears again.

man thats so sick

 

2022 DCSB TRD off road here. Regeared to 4.88 by sibi built with REM polished gears at 5k miles, 9k miles on truck now. Stock tire size at the moment, no extra weight on the truck. I live at 4500 ft elevation.

4.88s are perfect for DD on stock tire size. In summer heat, hot thin air, climbing the mountains w/AC kinda sucks. Highway is perfect. Around town is perfect, 1st gear almost too low, its shifts into 2nd immediately. A tune would probably resolve that.

if I were add weight to the truck, 5.29s would be my choice.

 

Man, thats a bad mamajammmma. Looks fun!

 

^^^^This is the answer. Independent thinkers on 33” or lower, with reasonable add-ons end up with 4.88.

Fellas who think larger numbers means “more gooder” end up with 5.29s after watching too many videos from Nitro Gear. Didn’t that goof-ball say to run 5.29 on stock tires? I digress. Don’t over-gear your truck and make it drive like a fork-lift. Toyota gave you 4Lo for a reason. Use it when you need it.

If you are running 35”s and up, for sure 5.29 or whatever.

 

I run 4.88s and 32-33” tires and wish I would have gone with 4.56 or 4.30. RPM a little high at 70-75 mph. Kills MPGs.

 

Don't have a dog in the gear fight, however I can comment on the Decked system. Ran it for 3 years and can say with confidence that its a total waste of bed space. You lose all functionality of the truck as a truck. Even if I was a contractor I would just build some drawers and call it a day. It does an ABYSMAL job of utilizing the space that it occupies.

I give their marketing team credit because they made me feel like it was going to be an essential item on my longer camping and overlanding trip. It was not. It only left me wishing for some totes and the rest of my bed space back.
I sold it a few months ago and am thrilled to have my bed space back.

 

I went Nitro 5.29 + tune in a DCLB automatic that is stock other than 265/75R16 tires. I've only got about 1,500 miles on it but did tow a small Casita trailer from Central Texas to Northern New Mexico and the experience was much better than before the gears and tune. I definitely have some diff whine now and it became more pronounced when I swapped from Lucas 85/140 to Amsoil Severe Gear

$28 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75W-90 after the break-in so I'll likely be swapping back at my next oil change.

Regarding the Decked system, good to know! I'm actually very happy with the Alu-Cab Ammo Box slide so I get all my totes up and out of the way and it comes out easily also.

 

These are the only gears I fight with....some of them anyhow.

 

My 2cents. Built a 2017 ACLB OR, did 4.88 with OV tune. Used tf out of it on and off. Was pleased with highway and off roading

 

5.29. 4.88’s were common before there was a good readily available set of 5.29s but there’s no reason at all to run them anymore. There’s zero benefit. They cost the same and we've never seen anyone break either of them here.

All of this "run 4.88 and upgrade to 5.29 if you upgrade your tires later" is silly because if you want to drop $1.5k of parts and a few k of labor just to change your tires later then like, more power to you, but just do the right thing the first time maybe?

The engine RPM concerns are marginal. You'll be at 2700 rpm at 70 in 6th on 5.29s and 2450 on 4.88s. You won't notice. Especially with overdrive gears.

 

Exactly, with such tall ODs on the auto, the difference in rpm is like 100-150 depending on tire size. That will never make a discernible difference in anything NVH/MPG related so there is no reason to shy away. 5.29 will definitely not make the truck like a fork lift compared to 4.88 either. In reality the two ratios are very close to each other and one just provides a tiny bit more advantage for the money invested.

On a manual I can understand the 4.88 move, only for stock to 31.5” tires, but then again it’s a lot of money for a 13.5% change, which is why many manual folks even go with 5.29. But, end of the day it’s a drastic move for manuals because it puts them over 3000 on the highway with less than 33’s, which some don’t like.

With the auto there is literally no reason or benefit to staying with 4.88.

 

2023 DCLB will see 4.88s next year when I do a 3 and 33’s. Mild trails, extent of mods aside from hidden winch

 

With a name like “pinion” I would expect you to be all over 5.29s.

 

Don’t need them, in my pinion, unless you’re going over 33’s. Felt satisfied with the 4.88’s, and new truck will do less trail, for me the 4.88’s are fine. We all have our own experience and pinion, just sharing mine, lol

 

With 34s (285/75/17s, arguably 33s but probably closer to 34s than 33s at 33.8) I'm at around 2200-ish RPM at around 70 or so, and 0 gear hunting that I have noticed so far.
Not a real test honestly, just something I noticed on the drive home tonight.
I really put in 5.29s over 4.88s because I wanted the extra torque for towing and mountain driving loaded, and at this point am not really concerned about MPG.
So far I can even see why I've heard of guys putting 5.29s in a stock OR.......which I had for about 5 days after I got my gears , but before the lift and tires.

 

Pics of the Comanche please. Always wanted to build one back in my XJ days.

Thank you.

Thank you.


I wanted to mention. Those gear ratio charts are more or less kind of an estimate, at least form my experience. They usually reflect a certain speed anywhere form 55 -65 I think is common. I always end up being lower then listed.

Here is a pic I took the other day on the highway with the 37s. This is me cruising with my foot on the gas lightly to maintain speed no incline.
Its 80 on the GPS 76ish in the pic, 2100ish RPMS.

 

4:88's from Premier West Gears, 285/75R16 BFG KO2's, KDMAXX tune, Hypertech speedo adjusted to make everything match. Typically 16MPG city, 21MPG hwy. Very happy with the setup.

 

I live on the front range in Colorado, and I drive with a good mix of flat, rolling and mountainous terrain. My main commute is at 7200ft with rolling terrain. I am thinking about regearing to the 5.29, but looking at still driving with stock tires for now.

I have a "23 Taril Edition with Bilstein 6112 / 5160 and OTT (Light / Mild).

Sorry for all the questions. Trying not to retread everything that was already stated earlier.

The question(s) I have for everybody who has regeared their truck: What are some expectation management tips? For example, what was it like to drive with stock after you regeared (I would go no bigger than 33s): Were the shift points firmer? Any indications of the transmission overheating (Is this even a concern)? Was it a rough drive at slower speeds (especially at speeds between 1st and 2nd gear)? Realistic MPG (I currently get 21 MPG)? Ext....

Follow on question: How would I integrate a Front Locker?


Have a good one.

 

Not even a single letter?

 

I’d be more curious to know what parts are needed to regear

So far I’m thinking:
-revolution master kit, 4.88 in my case, front and rear
-ECGS bushing and install tools kit, unless shop can do it
-front and rear solid spacer sleeve shim kits, order both from ECGS (stronger than crush sleeve)

not sure if any more is needed
And if any of the above kits happen to include left side seal (OEM) that should be replaced when doing ECGS bushing

plan is to drop spare diffs off at a shop for bench builds
Hopefully there won’t be delays of “we’re missing a bolt”…