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getting angles right

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 85GMCJimmy, Jun 25, 2001.

  1. 85GMCJimmy

    85GMCJimmy Registered Member

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    How do you determine your driveshaft angles, in order to determing the degree of a shim to use. Where do you measure to get your 2 angles?
     
  2. Ryeguy

    Ryeguy 1/2 ton status

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    Angle finder, off the pinion, should give the same # as off the T-case if you're not running a CV, or same (within a degree or two) of the driveshaft itself if you have a CV at one end. If you happen to get a driveshaft built with CV's at each end, don't worry 'bout it. :-)

    --Rob
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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    If you happen to get a driveshaft with a CV at the front and a u joint at the other end, forget about it. I've never seen one with CVs at both ends. But anyway, if you do get a CV shaft, rotate the pinion up until it's directly in line with the shaft for the best u-joint life. If you do that without the CV it'll vibrate like crazy.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  4. Ryeguy

    Ryeguy 1/2 ton status

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    Big luxury cars ran driveshafts with CV's at each end.

    --Rob
     
  5. Boss

    Boss 1/2 ton status Author

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    Measure the angle off the pinion on the axle:
    http://www.zing.com/picture/pc3bb1e10ac07473fff801baa69474c56/fe7cd267.jpg.orig.jpg

    Make sure the angles match perfectly. Or no more than like 2 degrees difference.
    <A target="_blank" HREF=http://www.zing.com/picture/pe748cc976c85e294dee4122e92d02569/fe82e282.jpg.orig.jpg>http://www.zing.com/picture/pe748cc976c85e294dee4122e92d02569/fe82e282.jpg.orig.jpg</A>

    I'm running the stock shaft and 5" of lift (lowered Tcase 1") and no vibes, until I hit about 75 to 80, but they're still not that bad. With that said though, I will be getting a rear 1350 CV shaft (HighAngle Driveshafts) after a few other mods [​IMG]
    And yes, double sided CV shafts do exist! [​IMG] Talk about pricey and over kill [​IMG] But would be nice [​IMG]
    Boss

    89' 1 TON of FUN K5
     
  6. CaptCrunch

    CaptCrunch 1/2 ton status

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    Yeah Boss has the down low for ya. If you haven't dropped the tcase it will aid a lot in easing your vibrations.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <A target="_blank" HREF=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</A>
     

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