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What gear ratio 2004 Tacoma 3.4 V6 Supercharged 4.10 Gears Penny for your thoughts

Discussion in '1st Gen. Tacomas (1995-2004)' started by Q Source, Jan 10, 2014.

  1. Feb 12, 2014 at 8:54 AM
    #21
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    from my understanding - lower gears (is the higher numbers) will give u more torque + less top end + higher RPMs. good for in town surface streets.
    higher/taller gears (is the lower number) will give u less torque + better top end + lower RPMs. good for freeway speeds.

    personally, i would try run like a 3.90 or something. no higher than a 4.10/11
     
  2. Feb 12, 2014 at 8:56 AM
    #22
    Snowy

    Snowy Is neither here nor there

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    I'd just leave it with 4.10's, just above 2k is where the 3.4 likes to live cruising. I had 33's and 4.10's on my armored 3.4 4Runner and it returned close to 20 mpg on the highway all day. Hell, it even pulled my 19 foot Mastercraft boat just fine on long trips if you turned the OD off
     
  3. Feb 12, 2014 at 11:31 AM
    #23
    Steves104x4

    Steves104x4 Well-Known Member

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    Sounds like the OP has a transmission problem. I'd install a shift kit and take it from there.
     
  4. Feb 12, 2014 at 12:13 PM
    #24
    fast5speed

    fast5speed Well-Known Member

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    Thread has me very confused. Never hears someone complain that RPMs were too low in highway. Talk about a blessing.

    Not sure why you would want to increase fuel consumption, wear, and engine noise. I would kill for a 2k rpm cruising speed in some cars I've owned...
     
  5. Feb 12, 2014 at 1:26 PM
    #25
    Blackdawg

    Blackdawg Dr. Frankenstein

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    thats where you are wrong..

    The lower RPMs for the auto trannys make it have to constantly down shift out of over drive, which is not only annoying, but eats the gas too. It does this because 2-2.2k rpms where (65-75mph) is not the sweet spot for power from the 5vzfe.

    manual transsmisions have it better. 65mph is around 2600-2700rpms. This is is the power band much better then the auto and thus drives better. Plus you don't have to down shift as much.

    By regear, you DECREASE the LOAD on the engine, so it doesn't have to work as hard. Thus, more power/torque and better mpgs.

    However, i would only regear for bigger tire use.




    so OP:

    4.88s for 33s
    4.56s for 32.
     
  6. Feb 12, 2014 at 1:30 PM
    #26
    fast5speed

    fast5speed Well-Known Member

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    I would understand if it was lugging along at 1500rpm or something. But 2250 I would just enjoy.
    In my experience with autos, they pretty much always shift if you press harder on the pedal at all.
    If you're coming up on a big hill, then of course something needs to change.
    BTW, I heard that the sweet spot for these engines IS like 1900-2400rpm, with the torque peak at like 3250. I've been shifting my truck exactly at 2k because I read (on this forum) that was an optimal balance for power and fuel efficiency. Shifting at 2k has been great. No lugging. I'm still getting used to this truck from my Nissan Hardbody. Sometimes the motor will feel kinda peppy *oh time to shift up* but it's only at 1500 and pulls great.
     
  7. Feb 12, 2014 at 2:58 PM
    #27
    Snowy

    Snowy Is neither here nor there

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    I beg to differ, 2-2.2k may not be ideal for power but I would argue its ideal for efficiency. If you run an auto out of OD with 33's at 70 mph and 4.10's, it'll spin just under 3k and feel peppy as hell....but you can watch the fuel gauge drop from the extra RPM.

    All this goes out the window if you live in the mountains. At elevation with steep grades I'd take short gears all day to make up for the power loss when climbing.

    I generally agree, downshifting isn't a bad thing when approaching a grade. Saves fuel on flat land and then gets you up in the power when you need it climbing (when mileage is going to be crap either way).
     
  8. Feb 12, 2014 at 3:00 PM
    #28
    Blackdawg

    Blackdawg Dr. Frankenstein

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    yea...cause..you are on 4.10s....so the LOAD is still higher then it would be on the motor then 2800 rpms and 4.88s.

    its very hard for people to understand that..but its how it works.
     
  9. Feb 12, 2014 at 3:09 PM
    #29
    fast5speed

    fast5speed Well-Known Member

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    Yes.
    The trade off here is so wasteful and inefficient. The guy wants to trade good fuel economy at low RPMs, for higher RPMs just so that his trans won't occasionally have to downshift. Doesn't make any sense.

    I think the OP wanted to achieve a slightly different goal: to be more in the boost.
    Which is like a triple lose situation. First of all, his motor will experience higher wear (because higher RPMs), AND being in the boost all the time, will again put more wear and tear on the motor. Then, higher RPMs mean higher fuel consumption. Which is magnified by forced induction. And the supercharger will wear out faster constantly pushing boost.
     
  10. Feb 12, 2014 at 3:34 PM
    #30
    Snowy

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    I guess we'll just have to agree to disagree on this one then. The motor doesn't care by what means the final drive ratio is achieved, if the final drive ratio is the same then mileage and power will be equal (all else held constant such as TC losses, frictional losses from the DS and R&P). Actually a case could be made that the 4.10 is more efficient because of the reduced driveshaft speed and corresponding frictional losses.

    Real world application would be comparing a W59 with an A340f. A W59 gets 4.88 gears, A340f gets 4.30's. Final drive ratio is approximately the same because of the difference in OD (.85 vs. .71). End result is the same for the motor attached to the trans.

    Yes I know that the manual is more efficient, blah blah. Just trying to make an example of why the R&P ratio alone does not affect the load placed on the engine

    Threadjack over :eek:
     
  11. Feb 12, 2014 at 6:55 PM
    #31
    wrat

    wrat Well-Known Member

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    With this back and forth about gears and 2K RPM being just fine with a V6 and 4.10, I'm starting to think that these folks saying that are flat landers.

    I've got an auto paired with the V6 and stock 4.10 gears. I'm armored, live around 5,200 feet asl, and am surrounded by rolling hills. I'm only running 32'' tires but 2,000 rpm isn't enough in overdrive. Even at 2,300 rpm I'm constantly kicking back and forth between gears. 4.88's are on my radar.
     
    Kolter45 likes this.
  12. Feb 12, 2014 at 7:37 PM
    #32
    fast5speed

    fast5speed Well-Known Member

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    I don't really understand why people are so butthurt that their transmissions have to shift. That's what they do. I would rather my transmission have to occasionally shift than it just sit at 3000k+ RPM constantly. Been there, done that, very annoying and noisy.
     
  13. Feb 12, 2014 at 8:03 PM
    #33
    2000GTacoma

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    Shifting quickly back and forth causes a lot of heat and a lot of wear. Heat is probably the biggest killer of an auto.
     
  14. Feb 12, 2014 at 8:12 PM
    #34
    fast5speed

    fast5speed Well-Known Member

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    I understand shifting is what breaks autos, but is it really shifting that quickly? I would think like one shift every 2-3 minutes.

    Or maybe 2 shifts. One down, then back up.

    If this is the case, I would think city driving would be 10x worse and wouldnt worry about it.
     
  15. Feb 12, 2014 at 8:16 PM
    #35
    2000GTacoma

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    It will constantly hunt with bigger tires, armor, bumpers, etc. As far as a higher rpm its just like a manual: When pulling a heavy trailer never go to 5th or overdrive. Your motor will turn faster but easier because its not bogged down. Your mileage will be better. Put it in fifth you risk overheating that small gear and you motor is working harder. Yes turning slower but you have to increase the throttle to maintain the same speed you had in fourth. Don't believe me go hook to a 5000lb trailer.
     
  16. Feb 12, 2014 at 8:18 PM
    #36
    Blackdawg

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    yes..it'll shift a lot. Sometimes 2-3 times on one hill. the auto tranny also kicks up 10º a second about when its out of over drive.

    For us out in the west where we have real mountains and hills, its very annoying.
     
  17. Feb 12, 2014 at 9:24 PM
    #37
    tomtom

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    I just drop the transmission down into 3rd and explain to the mountains and hills what a middle finger means. Of course, a MT in stop-n-go traffic is about as much fun as a Civil War battlefield amputation.
     
  18. Feb 12, 2014 at 9:53 PM
    #38
    Digiratus

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    Yes, the B03A tells you the stock ratio is 4.10, but it sounds like you already know that.

    I have to chuckle a bit at all the back and forth about what is the best ratio for a truck. It really does get down to how you drive, the road conditions and the load on the motor created by modifications, extra weight, larger tires, poorer aerodynamics, etc.

    My own experience was lifting and going to 32s, leaving the gearing stock. Wasn't horrible but with the auto trans it did tend to hunt for the 'right gear' more often. When I switched to 33s it became obvious that staying with stock gearing was putting a lot of extra strain on the driveline components. As Monte mentioned, living out west, we are constantly having to deal with hills and mountains and high passes. And offroad, I found it more and more dificult to go slow, even in low range.

    Regearing to 4.88s is by far the best mod I have done to my truck. I highly recommend it if you are running 33s and an auto. It will give you your power back. Your truck will no longer be sluggish. And the best part is on hills. No more downshifting, then upshifting only to see the it not be able to hold the rpms and then downshift again and start the cycle all over. I will also add that when I went from 32s to 33s, my corrected mpgs got pretty bad, especially on tanks of mostly city driving. Going to 4.88s increased my mileage by about 2 mpgs. All because the system doesn't have to work as hard.
     
  19. Aug 7, 2014 at 11:02 PM
    #39
    Q Source

    Q Source [OP] Well-Known Member

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    I regeared to 4.88s from ECGS(east coast gear supply), great product and great customer service.

    Truck is running fantastic with the new setup.

    Blackdawg, davidpick, others thanks again.

    Q
     

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