driveline angle

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by gmcjimmy4x4, Jan 26, 2006.

  1. gmcjimmy4x4

    gmcjimmy4x4 1/2 ton status

    May 6, 2005
    Likes Received:
    Sacramento, CA
    I just installed a 1-ton tom woods custom drive shaft into my jimmy, and im not sure what shim i need in the rear axle. I've got 22 degrees on the driveline and 13 on the rear differential. The way i see it, when you rotate the rear axle you lift the front of the rear diff along with the bottom of the driveline. So i dont think i need the full 9 dergees of shim. But do you cut this number in half or is it a different ratio. The shop says to have them strtaight within 1 degree. please help.

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