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What Pinion Shims for 4" lift

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Donovan, Jan 12, 2001.

  1. Donovan

    Donovan 1/2 ton status

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    What Pinion Shims for 4\" lift

    I would like to know what degree of pinion shims you guys are using with a 4" lift in the rear not the front? Thanks for the help.

    Donovan
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: What Pinion Shims for 4\" lift

    I have a 4" lift, 14 bolt FF in the rear (duh), and I am using a 4 degree shim. I have no vibes whatsoever and I've had the truck past 90 MPH. I do have one of the longest possible driveshafts for these truck though, I have the NP 205/SM465 combo. My U-joints also seem to last pretty long.

    Rene

    [​IMG]
     
  3. EDdaTREE

    EDdaTREE 1/2 ton status

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    Re: What Pinion Shims for 4\" lift

    Hey tRusty...nice BEAVER!!!! LOL!!!!

    "I'm not stuck...I'm just exploring the depth and texture of this mudhole for a while"
     
  4. ftn96

    ftn96 1/2 ton status

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    Re: What Pinion Shims for 4\" lift

    I have a Skyjacker 4" lift on my 90 jimmy 10 bolt np241, and my pinion leaf spring shim is a 4 degree. I also had to add and extra washer along with the t-case drop spacers, it gave me an extra correction degree, and gave me 8 degrees at both ends. I am assuming your asking this because your having vibes from a new lift?

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  5. drivelineman

    drivelineman 1/2 ton status

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    Re: What Pinion Shims for 4\" lift

    hey guys i'd use the brass shims not the alum. they break -
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: What Pinion Shims for 4\" lift

    Are the brass shims readily available? Is this a part you carry and if so how much do they run usually?

    Rene

    [​IMG]
     
  7. Donovan

    Donovan 1/2 ton status

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    Re: What Pinion Shims for 4\" lift

    No I am not having problems yet but I wanted to install them when I do everything. Just wanted to save some time. Thanks for your help.

    Donovan
     
  8. nyyef

    nyyef 1/2 ton status

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    Re: What Pinion Shims for 4\" lift

    hey rusty, how much longer is your driveshafts?

    Knife.
    knife.coloradok5.com
     
  9. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: What Pinion Shims for 4\" lift

    I could measure it if you want. The rear driveshaft and the front came with the complete 3/4 ton drivetrain I bought 3 years ago. Someone else must have had the driveshaft altered.
    I do know the SM465/NP 205 combo is the shortest out there for us, which means the longest rear driveshaft.

    Rene

    [​IMG]
     

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