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

For those that have regeared!!

Discussion in '2nd Gen. Tacomas (2005-2015)' started by brandonlamb25, Oct 21, 2010.

  1. Oct 21, 2010 at 1:45 PM
    #1
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    I have a 2008 prerunner, V-6, Automatic, non LSD and a 3"lift with 285/75r16 BFG tires. I've done DTLT headers, K&N CAI, Borla exhaust, unichip. I've got power but I'm considering regearing my truck. I'd love to get a lil better mpg. I know I know. I'm pretty sure I have 3.73 gears stock so should I go to 4.10 or 4.56?? Will I see an increase in mpg?? Any input from those that have done would be appreciated. Thanks!!
     
  2. Oct 21, 2010 at 2:06 PM
    #2
    KeithB

    KeithB Well-Known Member

    Joined:
    Jan 6, 2009
    Member:
    #12299
    Messages:
    739
    Gender:
    Male
    First Name:
    Keith
    Cheshire, CT
    Vehicle:
    SWB '09 Tacoma DCSB Sport 4x4
    Wheels and Tires: 17x8" Ultra Goliath wheels with P285/70R17 Nitto Terra Grappler G2, Suspension: Icon coilovers set at 2.5", TC UCA's, 1.5" lift 3 leaf pack with overload left in, 3* shims, carrier bearing drop, Bilstein 5100 B110 rear shocks Other: TRD SS exhaust, Pioneer AVIC 4100 H/U with Android Auto (awesomeness), sat radio bluetooth, Accessories: Toyota roof rack, black Toyota running board steps, cargo divider, weathertech floor liners, Literider roll up soft tonneau, thule bars over tonneau Cosmetic: window tint, grillcraft black mesh upper/lower grill, eyelids, tinted tails and third brake light, vinyl armrest in doors and center console Lighting: fogs only mod, bed lights in pockets, back up lights, amber interior accent lighting, amber 10" LED light bar in hood scoop, 33" LED bar behind the lower grill, amber lamin-x on fog lights
    I regeared when I had my '01 from 4.1 to 4.56 with 33" tires and saw an increase of about 1.5mpg and felt like more power at low end (engine didn't have to work so hard at low end - think of a 10 speed bike in 10th gear and trying to start from a dead stop, of course that's an exaggeration but you get the idea). That's about the same as going from 3.73 to 4.1 which just gets you back to the stock equivalent. Going past the stock equivalent to even lower gearing will end up robbing you of mpg since the engine will be screaming on the highway.

    It was worth it for me since I wheeled the truck and needed the lower gearing especially with a manual but your return on investment if your only looking to save mpg's is not worth it. Gears (600) + install (300 each diff)cost about $1200. If you drive 15000 miles per year at $3 / gallon and get 16.5 mpg it will cost you $2812 per year in gas. Same deal at 18mpg costs you $2571 per year. That's a $240 / year savings. So ROI is 5 years just to break even. Not worth it just to save some cash.
     
  3. Oct 21, 2010 at 3:28 PM
    #3
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    Gotcha. But I'm in a prerunner with no LSD. I called west coast differential and they said all I would need is a ring and pinion and bearing kit. Totaled to about $375 and I'm considering installing it myself. I've got a friend that's a mechanic. I am looking to improve mpg but a power gain would be nice too plus new gears my be better as far as wear and tear on the vehicle. With me having 3.73 gears is 4.10 where I wanna go?? Is 4.56 overkill to the point it will decrease mpg's?? I don't offroad so that's not what I'm needing it for nor do I pull a lot of trailers so torque isn't an issue. Just curious. Thanks.
     
  4. Oct 22, 2010 at 9:19 AM
    #4
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
  5. Oct 22, 2010 at 12:43 PM
    #5
    viperstd

    viperstd Tacoma convert

    Joined:
    May 21, 2009
    Member:
    #17487
    Messages:
    378
    Gender:
    Male
    Maryland
    Vehicle:
    09 4x4 TRD SR5 DC LB
    AllPro Front and Rear trail armor & full skid plates, Demello Hybrid Rock Crushers, Old Man Emu suspension, Warn 8000# winch, PIAA SMR fogs, perforated + heated leather seats, in-dash DVD/NAV/Sound, RE subs
    I made this up quickly for you. I assumed that you had "size 3" tires stock. Obviously, the top speeds are rediculously high because there is no account for drag, friction, powertrain losses, etc, etc... 4.10s look to be about stock.
    [​IMG]
     
  6. Oct 22, 2010 at 3:45 PM
    #6
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    thanks for the info. I just guess I'm wanting to know for sure if I should do it. Does it improve mpg?? or just power?? I assume 4.10 gears are the winner??
     
  7. Oct 22, 2010 at 3:50 PM
    #7
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,059
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    Well do you think the money is well spent?

    Gears = 100-200 bucks (good luck with the 4.10 gear search, very hard to come by)
    install kit = 45-175 depending on shape of current differential parts
    install = ~300ish.

    Thats a good 700 on the high side for regearing. If you not locked you should also really consider that if you wheel cause it will save money to do it at the same time in the long run. Are you going to be saving 700 dollars worth of gas over the ownership of the truck?
     
  8. Oct 23, 2010 at 9:03 AM
    #8
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    I guess I'm waiting to hear from someone who has actually removed there OEM gears and installed new ones. I know people out there have done it. Just want some feedback on mpg stats and power returns. Power gains seem to be there and noticable as ive read people say its one of the best mods as far as bang for the buck but what about mpg's??? Hmmmmm
     
  9. Oct 23, 2010 at 9:27 AM
    #9
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,059
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    Its not so much a power "gain" as giving the truck back its powerband that it originally started with
     
  10. Oct 23, 2010 at 9:33 AM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,153
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    I regeared my Dodge from 3:55's to 4:10's when I went from 31" to 32" tires. I was getting 12 mpg, and after the re gear, I got 14. Power was the reason I changed. I personally think re gearing is the best gain per buck you can get.
     
  11. Oct 23, 2010 at 9:33 AM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,153
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Or better if you over gear a little
     
  12. Oct 23, 2010 at 9:38 AM
    #12
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,059
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    Thats why chris im thinking of sgticking with 4.56 over 4:88. The 4.56 already put me 100rpm over stock at 65
     
  13. Oct 23, 2010 at 9:39 AM
    #13
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,153
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Yeah. If your gonna re gear, I prefer to over gear just a tad. That way, MPG doesnt suffer, and you get more performance.
     
  14. Oct 23, 2010 at 9:41 AM
    #14
    TacoTron

    TacoTron Tacotronn

    Joined:
    Nov 30, 2009
    Member:
    #26782
    Messages:
    2,275
    Gender:
    Male
    First Name:
    Anthony
    Albuquerque, NM
    Vehicle:
    07 Toyota Tacoma
    Fabtech Lift on top of 3 inch body lift. 34s trail grapplers on 18inch eagle alloys. KRFab Rear bumper, BHLM with HIDs, TRD seat covers, Hood scoop, N fab tire carrier, black valence, TRD intake, 40s Flowmasters, Foglight mod, best for last and thats my 4.56 gears, and much more too come.
    I regeared to 4.56s love the power that I got back including mpg is honestly alot better then what I used to have.
     
  15. Oct 23, 2010 at 12:15 PM
    #15
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    So with 4.56 gears instead of 4.10?? I have 3.73 gears stock
     
  16. Oct 23, 2010 at 12:17 PM
    #16
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,059
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    anthonys i believe are 295 so he went with 4.56 because i think he might be running a 34"ish tire? if your going with 285/75/16 thats under 33" so either 4.10 or even a 4.30 would work very well even!
     
  17. Oct 23, 2010 at 12:18 PM
    #17
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    Ok. Nice. Did you go with sierra's 4.56 ring and pinion?? What are your mpg's before and after the re-gear?? Are you lifted?? Tire size?? Thanks guys.
     
  18. Oct 23, 2010 at 12:19 PM
    #18
    TacoTron

    TacoTron Tacotronn

    Joined:
    Nov 30, 2009
    Member:
    #26782
    Messages:
    2,275
    Gender:
    Male
    First Name:
    Anthony
    Albuquerque, NM
    Vehicle:
    07 Toyota Tacoma
    Fabtech Lift on top of 3 inch body lift. 34s trail grapplers on 18inch eagle alloys. KRFab Rear bumper, BHLM with HIDs, TRD seat covers, Hood scoop, N fab tire carrier, black valence, TRD intake, 40s Flowmasters, Foglight mod, best for last and thats my 4.56 gears, and much more too come.
    I wish they were 16s but its a 295/70/18 yea its a 34 I wish I could fit a 16 on my lift.
     
  19. Oct 23, 2010 at 12:20 PM
    #19
    brandonlamb25

    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    294
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    Ok. I didn't know about 4.30 gears. That it went from 4.10 to 4.56?? Guess not. With my tire size do you think 4.56 is overkill or will negatively affect my mpg??
     
  20. Oct 23, 2010 at 12:21 PM
    #20
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,059
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    ya sorry i noticed the 295 then jumped to conlusion but after looking a little further down i noticed 18 eagle alloys so i changed it :D
     
To Top