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angle of 3/4 ton rear axle.

Discussion in 'The Garage' started by Bobby Jennings, Feb 25, 2007.

  1. Bobby Jennings

    Bobby Jennings Registered Member

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    trying to find if anyone knows any degree angles for a ten inch lift for my rear 14bff axle. perches off and ready to weld on my new perches. leafs will settle i was told atleast an inch and a half. any suggestions will help in this project. thanks in advance.
     
  2. JNygard

    JNygard Registered Member

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    With that much lift your going to want to run a CV drive shaft. So you will need to point the pinion directly toward the transfercase output, so your driveshaft has 0 degree angle with the pinion on the rearend. Of coarse with all the weight on the springs. You can adjust later with shims if/when the springs sag.
     
  3. Bobby Jennings

    Bobby Jennings Registered Member

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    cv rear axle.

    i of course will run a cv axle in the front but i never thought of one in the rear. someone was saying i might have to clock my transfer case for the front. thanks for the info, this site is awsome.
     
  4. bigblazer87

    bigblazer87 1/2 ton status

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    I'm running a 12" Superlift in my K5, and have a CV shaft for the rear. I also have 6 degree shims along with the tapered lift blocks to get rid of the vibrations.
     
  5. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    You may be able to get away with running a regular driveshaft in the back, although 12" is pushing it. Getting your angles equal at the t-case and the diff is extremely important. Here's how I did mine- I installed everything with the the stock perches in place. I made lots of measurements and figured the difference in degrees that the new perches would need to be welded on to match the t-case angle. In my case, it was about 23 degrees on both sides IIRC and my truck has zero vibes from the driveshaft. It's really just a lot of trial and error and I was fortunate enough to get it right the first time. Keep in mind, your probably gonna have to run 1410's at both ends= more $. If you haven't checked out the driveshaft 101, give it a shot. Good luck!
     

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