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4.88 or 4.56????

Discussion in 'Off-Roading & Trails' started by LBFD2005, Dec 23, 2012.

  1. Spoonman

    Spoonman Granite Guru

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    ...that's nice...? :notsure:
     
  2. Justin723

    Justin723 Dont judge me

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    Performance- bored .20 over, Doug Thorely Headers, Magnaflow Exhaust, and K&N cold air intake. Exterior- 7 inch lift, ARB compressor, high pinion 4.88 with ARB locker, 4.88 open diff in the rear, PIAA 520 series lights up front, and 36 inch fire stick. Interior- 2 10inch JL W1 subs, Alpine MRX-V70 amp, Alpine type R SPR 17C 6x6 speaker in the back, Focal 165 VR with crossover tweeter up front, Cobra LTD CB, and Weather Tech floor mats.
    My brother is running 37s on a SAS 1st gen with 4.88s and an ARB and he loves it. I have 4.88s with 35s on a SAS 1st gen and love it as well. My RPM's are around 2500 doing between 60-65 (speedo is off) his is around 2300. Your 4.0 with a 6 speed should be a nice set up for the road.
     
  3. benbacher

    benbacher Purveyor of Fun Vendor

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  4. Justin723

    Justin723 Dont judge me

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    Performance- bored .20 over, Doug Thorely Headers, Magnaflow Exhaust, and K&N cold air intake. Exterior- 7 inch lift, ARB compressor, high pinion 4.88 with ARB locker, 4.88 open diff in the rear, PIAA 520 series lights up front, and 36 inch fire stick. Interior- 2 10inch JL W1 subs, Alpine MRX-V70 amp, Alpine type R SPR 17C 6x6 speaker in the back, Focal 165 VR with crossover tweeter up front, Cobra LTD CB, and Weather Tech floor mats.
    Who's doing the thread jacking? We should light the tourches grab the pitch forks and kill that fool!!!
     
  5. LBFD2005

    LBFD2005 [OP] Its tha Southern Way

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    Anyone know the rpm difference between 4.56 and 4.88 say around the 70 mph range


    with the 4.0
     
  6. Manwithoutaplan

    Manwithoutaplan the full Monty

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    Just wait for stupid comment by spoonman.
     
  7. MonkeyProof

    MonkeyProof Power Top

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  8. maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    I didn't see any stupid posts, just one where he was kind of a jerk to you and then it was all down hill from there.

    Stupid posts would be calling for 5.29s after I posted they won't fit the front clamshell.

    Add to that a whole lot of other misunderstandings in this thread.
     
  9. BradyT88

    BradyT88 Skinkwerks Rockware & Fabrication!!

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    You have the auto tranny right?

    At 70mph with 33's and 4.56's: 2340rpm
    At 70mph with 33's and 4.88's: 2504rpm

    At 70mph with 35's and 4.56's: 2206rpm
    At 70mph with 35's and 4.88's: 2361rpm

    I used this calculator: http://www.grimmjeeper.com/gears.html
     
  10. Manwithoutaplan

    Manwithoutaplan the full Monty

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    Are the rpm's different with a manual??
     
  11. BradyT88

    BradyT88 Skinkwerks Rockware & Fabrication!!

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    Yeah. The 6spd manual has like a .85 or .86 OD and the 5spd auto has a .716 OD. A manual with 4.88's runs over 3000 rpm on the freeway.
     
  12. Spoonman

    Spoonman Granite Guru

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    Huh? I don't have 4:56 or 4:88. Therefore I know nothing of this RPM jibberjabber
     
  13. Manwithoutaplan

    Manwithoutaplan the full Monty

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    So if i were to get 315 w/4.56 @ 70 rpm i would be around 2500??
     
  14. Spoonman

    Spoonman Granite Guru

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    I thought it was higher? Hmmmmm....
     
  15. BradyT88

    BradyT88 Skinkwerks Rockware & Fabrication!!

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    Yeah about that.
    I have 33's and 4.88's on my auto and I run about 2730rpm at 75mph. Calculator says I should run about 2668rpm. So they will be slightly off.
     
  16. maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    at 80 im at 3
     
  17. Manwithoutaplan

    Manwithoutaplan the full Monty

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    Because i am about to get 4.56 and have 315/70/17. Have the 6 speed mt. That is good know.
     
  18. Spoonman

    Spoonman Granite Guru

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    Man..I can never decide between. 4:56 and 4:88....

    I need a definitive answer from someone with V6, 35s, 4:88s, auto tranny, and what their rpm is at when they are travelling 70 mph. Not what the speedo says(it'll be off unless they've had it recalibrated).

    I'd like to sit no more than 2500 rpm at 70 mph.
     
  19. Manwithoutaplan

    Manwithoutaplan the full Monty

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    btw krish where did you get your gears done??
     
  20. BradyT88

    BradyT88 Skinkwerks Rockware & Fabrication!!

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    If you weren't below 2500 you would be really close. I run just above 2700 with 33's, 4.88's, V6 w/auto, at 75mph that is gps speed not speedo speed.
     
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