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Lower Transfer Case HELP

Discussion in 'The Garage' started by ditavonteez, Jan 15, 2004.

  1. ditavonteez

    ditavonteez Newbie

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    They tell me that on my 1978 chevy blazer that i have a 4 inch lift on that i need to lower my transfer case.... but is that bad for my engine and carburetor..? /forums/images/graemlins/rolleyes.gif <font color="red"> </font>
     
  2. Tweetysuarus

    Tweetysuarus 1/2 ton status

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    It's to correct driveline angles. But that can be corrected with CV style rear drive line.
    Bill
     
  3. 88Silverado

    88Silverado 1/2 ton status

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    The engine will tilt a little more in the aft. It shouldnt be a problem for the carb. Dropping the case will reduce the severe angle at the driveshaft/transfercase u-joint and usually helps reduce or eliminate vibrations caused by the severe angle. CV setups are nice but cost some $$$. Dropping the case is a very simple procedure.
    Heres a link on Driveshaft angles
    There is also a kit for dropping the xfercase which includes full-length blocks which will prevent possible cracking of the frame instead of moving the stock spacers around. I didnt use them (yet) but probably will switch over in the future. You can see a photo of a dropped case on my Blazer link
     
  4. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    If its not making the rear shaft vibrate do not lower the case. Assuming your '73 has an NP203, and thus a fixed rear output, it should not need a dropped case w/ a 4" lift. If you are going to drop the case 1" why didn't you just put on a 3" lift? Just something to think about. If you do drop it your carb should be fine but be careful w/ the dist. cap. It is also bad for the motor mounts and the frame in the area near the trans x-member.
     
  5. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    [ QUOTE ]
    There is also a kit for dropping the xfercase which includes full-length blocks which will prevent possible cracking of the frame instead of moving the stock spacers around. I didnt use them (yet) but probably will switch over in the future. You can see a photo of a dropped case on my Blazer link

    [/ QUOTE ]
    I agree with 88silverado.Get the kit and don't use the stock spacers...take it from someone that used the stock spacers and cracked the frame. I had to reinforce the frame at the crossmember after only a couple of months with it dropped 1".
     

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