+ Reply to Thread
Results 1 to 2 of 2

Thread: Rear End Rebuild

  1. #1
    Junior Member

    Join Date
    Oct 2018
    Osoyoos B.C.

    Default Rear End Rebuild

    What improvements did you do to your 9.25 change to a different gear 4.56 or 4.88 new axles 5 stud? Disc brakes conversion, street strip truck 408 stroker around 450 hp wanting to beef it up.

  2. #2

    Corey's Avatar
    GPz550 Addict

    Join Date
    Sep 2009
    San Lorenzo, CA


    Just a thought...

    Common options for gearing:


    Loads of ring and pinion calculators on line that will show changes. With you current set up mentioned above, at what rpm is your peak torque, and peak hp?

    It usually depends on your intended use. If you are racing, then the 4.56 is popular. If you take long trips that allow you to cruise at 75-80 mph like we do here in CA, you might want to stay with the stock 3.92 or 4.11 ratios. Because I don't plan on turning mine into a racer, I'll opt for stock gearing or 4.11, but improve the limited slip.

    YAHOO = You Always Have Other Options
    Last edited by Corey; 12-27-2018 at 10:37 PM.
    DRTC #1176

    2000 Bright White CC (1/553)
    Dyno'ed 07/05/13 (126,000 Miles) 230 Hp / 308 Tq
    14.6 @ 93 mph (2.18 60 ft.), 4130 lbs.(1/2 tank gas)
    Truck Pictures --> http://smg.photobucket.com/albums/v9...Clough/Dakota/

    1985 Kawasaki GPz550
    2003 SV650S (Race)
    1973 W100 Powerwagon

    Mater: I don’t need to know where I’m goin’, I just need to know where I been!

+ Reply to Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts