1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

2012 2.7 regear questions

Discussion in 'Technical Chat' started by Shortkoma2.7, Mar 16, 2025.

  1. Mar 16, 2025 at 4:21 PM
    #1
    Shortkoma2.7

    Shortkoma2.7 [OP] New Member

    Joined:
    Mar 10, 2025
    Member:
    #467448
    Messages:
    2
    Gender:
    Male
    First Name:
    Davis
    Ontario Canada
    Vehicle:
    2012 standard cab 4x4
    Hey guys, i have a few questions about regearing my 12 standard cab 2.7l 4x4 with i believe to be 8” open diff. Gone down some internet rabbit holes leaving me without the confidence to order correct parts.I was hoping to go to 4:88 ratio instead of 4:10 bc i wanted to up my tire size. With that being said, do i need to change both carrier’s to accept aftermarket gears? Spool, mechanical locker? Im okay with front being open for now. What do i need to do fellas really hoping to have it for the summer months and list in the internet lol
    Thanks
     
  2. Mar 26, 2025 at 4:07 PM
    #2
    gotoman1969

    gotoman1969 Well-Known Member

    Joined:
    May 30, 2018
    Member:
    #254966
    Messages:
    6,975
    Gender:
    Male
    First Name:
    Steve
    San Antonio, TX United States
    Vehicle:
    2015 Silver Tacoma PreRunner
    3" ToyTec coilovers, JBA UCA's, Bilstein 5100's
    What size tire? Yes you’ll have to do both front and rear differentials. A set up to consider could be a Trutrac limited slip in the rear and a Yukon Grizzly locker in the front.
     
  3. Mar 26, 2025 at 4:37 PM
    #3
    gtrotter07

    gtrotter07 Well-Known Member

    Joined:
    Jul 19, 2019
    Member:
    #299768
    Messages:
    406
    Gender:
    Male
    Vehicle:
    2007 Tacoma reg cab 4x4 on 37's; 2021 TRD Offroad, 6 speed
    37's,lockers, bumpers, bobbed etc.
    You'll have to regear both the front and rear. 4.88 is a nice gear to go to. I've run 33",35", and 37" tires with this gear ratio and was happy.

    You should check out East Coast Gear Supply for prebuilt differentials. I'm a fan of ARB air lockers, although they are spendy. Since you are a 4 cylinder truck, your rear diff is the 8.4. IMO, I
    If you're regearing then the extra cost of a front locker is worth it.
     
  4. Mar 31, 2025 at 10:28 AM
    #4
    Shortkoma2.7

    Shortkoma2.7 [OP] New Member

    Joined:
    Mar 10, 2025
    Member:
    #467448
    Messages:
    2
    Gender:
    Male
    First Name:
    Davis
    Ontario Canada
    Vehicle:
    2012 standard cab 4x4
    Thanks for the help fellas ill check out the prebuilt ones, i knew i had to do both diffs but read somewhere aftermarket gears dont bolt to stock carrier so i was concerned if i had to change the front carrier aswell. I am hoping to go to a 35” tire so sounds like 4.88’s will be the ticket. Also will i need to change my axles for a aftermarket carrier? Wondering about spline counts. I would love to go arb lockers but my wallet isnt ready yet hahah but i will check out a front locker thanks again
     
  5. Jul 17, 2025 at 8:00 PM
    #5
    that_06regularcab

    that_06regularcab 3rd gear wide open in a Toyota

    Joined:
    Nov 4, 2015
    Member:
    #168631
    Messages:
    254
    Gender:
    Male
    Southern Oregon
    Im sure you've made a move on this already but you don't have to change out your stock carrier to run different gears bud. And for your rig you could do 4.88 but if you plan to go up to 35's youll want to do 5.29s. I personally have had a spool in the back of my truck with 529s and it's fine for the winters, but in the summers i run a 13.5 wide tire and I'm gearing an open diff currently so i can cruise on those wide tires without the spool. Thats just a lot of traction to be running on the road lol. Having said that Ill re-install the spool in the winter.
     

Products Discussed in

To Top