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Gearing Suggestions? 2.7 and an Automatic

Discussion in '4 Cylinder' started by wesrunner, Oct 9, 2011.

  1. Oct 9, 2011 at 3:42 PM
    #1
    wesrunner

    wesrunner [OP] Team 4Runner

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    SOOOOO.

    I own a one of a kind Tacoma. It's a 1995 PreRunner. The ONLY 1995 PreRunner. :D It was a 4x4 chassis that a we put the components from a totalled 1999 DLX into. End result is a 6 lug 2wheel drive with a 2.7 and an Automatic.

    I love the truck. It means a lot to me, my dad and I worked on it together and got it rolling. I don't plan on selling it anytime soon.

    The problem?
    A 4 banger coupled to an automatic transmission turning a Toyota 8" with a 4.10 ring and pinion running 30" tires isnt very fun. I'm thinking it's time for a regear.

    I have some old rear ends from parts trucks we've used for projects on my Dad's 04 DC 4x4. Im thinking about taking one and rebuilding it with a TrueTrac and new gears. Also I have a set of 31x10.5x15's that I'd like to use. I figure I can gear for the bigger tires and maybe get a little more pep out of the engine since we all know that 3rz aint no iForce. :rolleyes:

    My question is what size... I'm stuck on 4.56 or 4.88... It's my DD, so it see's a lot of highway use. Which is why I'm hesitent on the 4.88's, but I'm afraid I won't see a difference between my 4.10's and the 4.56's.

    Thought's?
     
  2. Oct 10, 2011 at 7:12 AM
    #2
    wolfgang123

    wolfgang123 Well-Known Member

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  3. Oct 10, 2011 at 7:59 AM
    #3
    Hayes

    Hayes Well-Known Member

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    this will help you figure out your highway rpms.

    I would recommend the 4.88, because what you lose in highway efficiency, you gain in around town pep. The 2.7 trucks came with ~30 tires (at least mine did) and I have no problems with power, so if you are complaining about power output, 4.88 will help you feel faster.
     
  4. Oct 10, 2011 at 10:45 AM
    #4
    wesrunner

    wesrunner [OP] Team 4Runner

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    Thanks! and I'm also thinking that with the locker, the 4.88 would make it easier to break the inside tire free on the pavement in a turn as apposed to maybe having that stress put somehwere else on the driveline... Is that accurate?
     
  5. Oct 10, 2011 at 10:54 AM
    #5
    97yota4wd

    97yota4wd Well-Known Member

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    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc
    with 31 inch tires you will hate life with 4.88s.

    pm Underdog and ask him about it, he had it, took them out soon after, went 4.56 and he loves it
     
  6. Oct 10, 2011 at 11:05 AM
    #6
    Hayes

    Hayes Well-Known Member

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    A locker will act like an open diff if you aren't under power. So if you coast around the corners, you won't stress anything.

    So it was geared to high for him?
     
  7. Oct 10, 2011 at 11:06 AM
    #7
    97yota4wd

    97yota4wd Well-Known Member

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    yes way too high. he said doing like 75-80 it was almost red lining in 5th gear.
     
  8. Oct 10, 2011 at 5:35 PM
    #8
    wesrunner

    wesrunner [OP] Team 4Runner

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    1999 T4R 4WD V6, Deck plate, B&M trans cooler, LED guages and dome lights, LED reverse lights, 2.5" spacer lift, highway tires.
    Thanks guys.

    And I know that the lockers only engage when under power, but a good portion of my commute is the upramp to get on the interstate to cross the Mississippi River. And I'd hate to fight a clunking rear end all the way up.
     
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