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4.88 gears stock

Discussion in '5th Gen 4Runners (2010+)' started by Braves95, Jan 25, 2019.

  1. Jan 25, 2019 at 7:59 PM
    #1
    Braves95

    Braves95 [OP] New Member

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    I had 4.88 gears in my Tacoma 2017 6 spd manual loved it. Now will putting in 4.88 in stock 4runner get better gas mileage?

    2019 nightshade. Gonna add a rear locker if I do the gear change.
     
  2. Jan 26, 2019 at 5:58 AM
    #2
    Dark Knight

    Dark Knight New Member

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    What size tires are you going to be running? Tire size will be the deciding factor if 4.88’s are going to help or hurt.

    Reading that it’s a 2019 nightshade, that’s a limited. If you stay with stock tires, 4.88’s will kill gas mileage. The 4.0l/5speed auto is a completely different beast than the new Tacoma drive train.
     
    Braves95 [OP] likes this.
  3. Jan 26, 2019 at 3:27 PM
    #3
    Braves95

    Braves95 [OP] New Member

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    245/60R20
    Adding kings for lift
     
  4. Jan 27, 2019 at 9:04 AM
    #4
    Dark Knight

    Dark Knight New Member

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    That’s a 31” tall tire. Do not install 4.88’s. Rpms will be very high with normal driving.
     
    troprobped17 likes this.
  5. Jan 27, 2019 at 10:59 AM
    #5
    Braves95

    Braves95 [OP] New Member

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    Ok. May just plan on putting the ARB Rear locker in and calling it a day. But of course alot of mods coming.
     
  6. Jan 27, 2019 at 3:13 PM
    #6
    akkording

    akkording New Member

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    33s at least or 34s for 4.88 cruising around 70 mph on highway would be optimum. Just knowledge from my best friend who has done it.
     
    troprobped17 and Braves95 [OP] like this.
  7. Apr 12, 2019 at 7:17 PM
    #7
    57buick

    57buick New Member

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    I have 33's and I just put 4.88 gears in. RPM at 70 mph is 2500 other than that is so much more awesome for everyday driving. As long as I only do 60mph gas mileage is better, above 60mph it is a slight hit in mileage but not bad
     
    SlvrSlug, troprobped17 and Watt maker like this.

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