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Tranny Noise

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by cleszkie, Nov 18, 2001.

  1. cleszkie

    cleszkie 1/2 ton status

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    Location:
    Santa Ana, CA, USA
    I run a 350/350TH combo in my 72 K5. When I shift the auto tranny into reverse, there is a slight "klunk" when the thing is engaging (there is no noise when shifting into any of the forward drive settings). What is this, and how worried should I be? Just had the thing rebuilt less than a year ago and is still under warrantee. Any opinions, experience with this problem, possible remedies, or condolances are appreciated!
     
  2. 71RestoRod

    71RestoRod 1/2 ton status

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    Are you sure it’s coming from the trans? I'm sure you'd know if it was u-joints… but it could also be that the driveshaft is worn out. I used to get a clunk when I'd start from a dead stop that I traced to the driveshaft. If I lubed up the slip joint the clunk would go away for a short while.
     
  3. DesertDueler

    DesertDueler 1/2 ton status

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    Check the u joints and also the rear end. If the rear ens has alot of play it will do that. I just found out why the burb clunked when I put it in reverse, it was the side gears are chipped and clunked till it got to a good point. I wouldnt really do it in drive though go figure.

    86Jimmy 4"&35"MTRs,87 burb 4"&35"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     

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