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Help! Purchasing gears

NotMeMoe

NotMeMoe

2️⃣ Bronze
So, I've just recently lifted my truck with a Fabtech 6 inch lift, and put the truck on 35s. Now I have to regear and I'm kind of lost as to what I need to do. I know the stock gear ratio is 3.73, and thats about it. I've heard from several people that I need to go with a gear ratio anywhere between 4.56-4.88. All I know is that I want to get the truck back to the best possible mpg's that I can. Obviously itll never be as good as it was, but as close as possible will suffice. Thanks in advance to anyone who can help me out here.
 
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If your stock gears is 3.73 I’m guessing you have a 2nd gen Tacoma. Anyway this is the formula: Gear ratio - 35 x gear ratio 3.73 divided by oem tire 30 = 4.35 so closest to this is 4.56 gears. Also do you have elockers or non elockers. Different prices on these so you need to know before hand what you have before ordering. Hope this helps.
 
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NotMeMoe said:
Yeah I’m gonna stick with 4.56s
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4.56s aren't available for the 8.75" rear E-locker 3rd member to the best of my knowledge, your options are either 4.88 or 5.29 and I would definitely go 5.29 on any truck running 35s or larger, especially an automatic.
MaDaPaKa said:
You mean 5.29 unless he goes 40s that’s when shit breaks on IFS
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5.29s for these trucks are still a newer offering, but I wouldn't worry about the strength at all. They have almost twice the gear engagement surface of the 'old' 8" rears, and the 5.29 pinion gear for the 8.75" is larger than the stock 8" 4.10 pinion gear.
 
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Ran into a guy on the beach running 35's and 4.88's just the other day. When asked how he likes the gearing he said "I love them, but I wish I went 5.29's."

That said, I'm pretty much sold on 5.29's. I plan on doing 35's sooner rather than later. With all the weight I have and the tires I can't see what 4.88's makes much sense for my application. This trip we're currently on definitely sealed the deal that gears are a necessity. There's no reason the truck should be in 3rd screaming up a hill.

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Ron said:
I wonder how much install is for 4.88s? Also, do you have to do front an back?
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lol, yes you have to do both diffs if you're 4WD

Going rate for a 4WD regear is around $2,500 - $3,000 if the installer supplies everything and does the work. Seems to break down to about $1,200 - $1,400 for parts and $1,400 - $1,800 for labor depending on how you go about it. That doesn't include adding lockers or anything like that.

If you buy complete 3rds from ECGS, install them yourself, and return your cores, the total cost is more like $1,700 depending on shipping and other incidentals.
 
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Thanks for all of the replies, I went with the 4.88s, and a hypertech in-line speedometer calibrator, and the truck runs absolutely wonderful. In fact, the odometer is more accurate now than it was when the truck was stock. MPGs are almost in the same area as they were before I did any truck mods, which is a big plus in my book. Once again, thanks to all for the information you gave, it was great to have some insight into what I was doing.
 
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NotMeMoe said:
Thanks for all of the replies, I went with the 4.88s, and a hypertech in-line speedometer calibrator, and the truck runs absolutely wonderful. In fact, the odometer is more accurate now than it was when the truck was stock. MPGs are almost in the same area as they were before I did any truck mods, which is a big plus in my book. Once again, thanks to all for the information you gave, it was great to have some insight into what I was doing.
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Nice!! Are you on the 35's yet? What tire size?
 
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@H3llRid3r its a super easy install, theres a few videos I watched on youtube that shows you exactly how to install the device. Just make sure to take your time with it, and dont force the trim if it doesnt want to budge. Definitely use a decent trim removal set, makes the process so much easier. One thing to note, before installing the device, when you are programming your device, leave the gear set to factory ratios. Otherwise your speed will be way way off, (first hand experience here :LOL:) All I had to do was plug in the old tire size and the new tire size.
 
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Feel free to check out my instagram, I have photos of the installation there, along with other photos of my truck and other shenanigans:pMy IG name is leekmeister_95
 
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NotMeMoe said:
@H3llRid3r its a super easy install, theres a few videos I watched on youtube that shows you exactly how to install the device. Just make sure to take your time with it, and dont force the trim if it doesnt want to budge. Definitely use a decent trim removal set, makes the process so much easier. One thing to note, before installing the device, when you are programming your device, leave the gear set to factory ratios. Otherwise your speed will be way way off, (first hand experience here :LOL:) All I had to do was plug in the old tire size and the new tire size.
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Yes, everyone says it’s easy and it looks easy. I suck at the delicate stuff. But thank you for the encouragement :)
 
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H3llRid3r said:
Does anyone want to install the Hypertech speedo calibrator for me? For some reason it sketches me out.
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H3llRid3r said:
Yea, that’s what everyone says, but for some reason I have a fear about removing my dash panel. I can never get shit like that back together without an issue.
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H3llRid3r said:
Yes, everyone says it’s easy and it looks easy. I suck at the delicate stuff. But thank you for the encouragement :)
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It's super easy! And you can check out the TACO logo under there. It's a thing.
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Are 4.88 going to be too much for a truck without 33s on them? I'm running 265-70-17, and am not planning on going any bigger.
 
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