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80 IN OVERDRIVE!!!

Discussion in 'Street Trucks' started by jddavenport26, Oct 13, 2021.

  1. Oct 13, 2021 at 7:10 PM
    #1
    jddavenport26

    jddavenport26 [OP] New Member

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    Jonathan
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    2019 SR5
    3.5 rough country suspension lift kit 20” Moto metal razor wheel 33” nitto grappler tire
    Just upgraded SR5 Tacoma 6cyl
    3.5 rough country suspension kit
    20” moto metal razors wheels
    33” nitto grapplers

    When I get on the Interstate 95 to be exact, seems like my wheels and tires are to heavy. When I try and go over 80 mph the truck automatically dumps into 4 gear and try’s to ride at higher RPM’s. It’s like 80 is the sweet spot for 5 gear. Has anyone else have this problem before?
     
  2. Oct 13, 2021 at 7:15 PM
    #2
    a2lowvw

    a2lowvw Well-Known Member

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    Justin
    Bothell, Wa
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    Yeah, the gearing sucks. You either need more power or to re-gear the differentials or both.
     
  3. Oct 13, 2021 at 7:16 PM
    #3
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    Billy
    Largo Florida
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    A few OE parts from fancy trucks
    Maybe the term modified would be more accurate?

    Part of the problem, but the change in your effective gear ratio with the taller tire package is a culprit too.

    Yes, that's why it's called an automatic. It tries to deliver what your right foot is asking for.

    Or it may be a nanny control, since there are no 80+ limits on I95 I'm aware of.

    Of course they have. W/o changing what you've already done, regearing is the answer you seek.
     
    tacomataco2, davidstacoma and 907rx7 like this.
  4. Oct 13, 2021 at 7:45 PM
    #4
    jddavenport26

    jddavenport26 [OP] New Member

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    2019 SR5
    3.5 rough country suspension lift kit 20” Moto metal razor wheel 33” nitto grappler tire
    And how expensive is re gearing? Is this something that can really be done?

    can I add a chip or something to give it more power so I can travel better?
     
  5. Oct 14, 2021 at 3:12 AM
    #5
    BananaMan

    BananaMan Well-Known Member

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    Re gearing can definitely be done, many many many trucks on here have had it. You just need to make sure you put the same gear ratio in both front and rear diffs.
     
  6. Oct 14, 2021 at 3:15 AM
    #6
    jnprn2003

    jnprn2003 Well-Known Member

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    $3000-4000 for re-gear by a reputable shop out the door. If you pull the differentials and take them to a shop you will save a few hundred. Another option is to buy built diffs from ECGS.com and send your originals back as cores.
     
    SR-71A likes this.
  7. Oct 14, 2021 at 4:31 AM
    #7
    Toyko Joe

    Toyko Joe Here for the pictures

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  8. Oct 19, 2021 at 12:02 AM
    #8
    907rx7

    907rx7 Well-Known Member

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    James
    Alaska
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    Your new wheel/tire combo is about 110lbs vs your stock setup of about 59lbs. So yes the will make acceleration slower combined with the increased tire height.

    Also, if you are going off of your speedometer and haven't recalibrated it. You're going 93 not 80.
     
    Dirk Diggler, SR-71A and Superdave1.0 like this.
  9. Oct 19, 2021 at 12:04 AM
    #9
    Empty_Lord

    Empty_Lord Wallet abuser

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    Northwest Indiana/Chicagoland
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    Too many trucks and mods to list.. check builds
    As stated above. Regear is the answer your looking for.
    And this is a case of you gotta pay if you wana play. Regearing isn’t exactly cheap
     
  10. Oct 19, 2021 at 4:55 AM
    #10
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    A few OE parts from fancy trucks
    @tonered, fill the newbie in on an option.

    @jddavenport26 here's a suggestion. Before dropping a wad on things like suspension, tires & wheels, spend some time doing research on the pros and cons of the components you're considering.
     
    Last edited: Oct 19, 2021
    tonered likes this.
  11. Oct 19, 2021 at 5:22 AM
    #11
    tonered

    tonered tacorider

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    Lynnwood, WA
    @jddavenport26 needs a tune. Hahahaha!

    Check out vFTuner.com to buy it yourself or look at my Feelers thread to find someone local to you.
     
    Last edited: Oct 19, 2021
    Rock Lobster likes this.

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