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Thread: 4.56 gears?

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  1. #1
    Join Date
    Sep 2008
    Location
    Shreveport, La
    Posts
    237
    I had a 05 ccsb 2wd lifted with some 35's. After the lift I went from 3.73-4.56's, and an aburn locker... made a HUGE difference. Shortly after I put some LT's, cai, shift kit and servos. Thing would actually run pretty good on those big tires. But the tranny went out pretty quik with the shift kit. Had it shifting wwwaaayyy too hard, it would leave 2-5ft black lines if it hit 2nd at WOT on any pavement. Even driving it that hard I never had any problems with the rearend. So I think if you beef the rearend up with a good locker then go with the 4.56's unless your serious about not staying n/a. Might be alot of fun on the street but the highway would be a different story. 4.10's-4.56's seems like a big jump to me. I think motive makes some 4.30's, that may be your best bet. Good luck bud

    -Chris
    2005 5.3l CCSB- 220r/114, full bolt-ons, 4.56/trutrac

    2004 VHO LQ9- Heads/Cam/Full bolt-ons SOLD and missed




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  2. #2
    Join Date
    Oct 2008
    Location
    Houston
    Posts
    807
    4.10's
    2002 Tahoe 4.8 - soon to be turbo'd - SOLD
    1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
    2012 Raptor - 497rwhp at 10psi
    If you aint breaking - you aint going fast enough

  3. #3
    Join Date
    Jun 2009
    Location
    Harrisburg PA
    Posts
    30
    thanks for all of the responses
    i dont drive on the highway much but when i do its usually a long trip traveling to motocross tracks
    wayfast = how was your truck on the highway with overdrive? like what rpm to cruise at 75?
    after what oleshifty said im not sure about 4.56 cause i run my truck hard.
    right now it shifts from 1st-2nd at about 50mph and 2nd-3rd at about 90
    i didnt know you could get 4.30's maybe thats the way to go
    Wills77
    06 Silverado 5.3
    20's wrapped in Nitto nt420s, airaid intake, k&n, magnaflow duals, custom grill, 2" drop shackles, cowl hood, vette servos, autotek 2000 watt amp and 2 hifonics brutus 12's....
    05 honda trx450r #77
    Fully built MX quad

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