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Anyone know how to shim a starter?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BurbinOR, Jun 19, 2001.

  1. BurbinOR

    BurbinOR 3/4 ton status

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    In all my years of owning now 8 different Chevy V-8's I have NEVER needed to shim a starter..........but the one in my K5 (406 small block) sounds like crap. When the trans was rebuilt the guy shimmed the starter when he put it all back together because he heard the starter "engaging too much/too far"................now the thing sounds like crap at times. I have loosened the two bolts and moved the starter away from the flexplate and it sounds better but not as good it should.

    Any help is much appreciated.

    <font color=blue>'79 ONE TON TPI K5 - See it at---&gt;<A target="_blank" HREF=http://www.blazzinor.alloffroad.com>http://www.blazzinor.alloffroad.com</A>
     
  2. BlueBlazer

    BlueBlazer 1/2 ton status

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    You can buy shims of different thicknesses at the parts store. They go between the block and the starter. Just use the thinnest shim and put bigger ones in ( to a point )until the grinding goes away. If shimming it doesnt make it any better than you have other problems like flywheel teeth or bad starter. Feel free to correct me guys if I said anything wrong (this means you Executioner).
    Tyler
     
  3. CaptCrunch

    CaptCrunch 1/2 ton status

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    Sounds pretty good to me Tyler, and I just was working on a buddy's car and we ended up shimming his starter... small world...

    -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>
     
  4. DMK

    DMK 1/2 ton status

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    Just remember you can shim too far. Too many shims and there will be only a couple of threads holding starter on.
     
  5. HarryH3

    HarryH3 1 ton status Author

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    Do you have a factory service manual (for nearly any GM ever made)? They show you how to use a wire feeler gauge to set the clearance between the starter gear and ring gear. Make sure you unhook the battery first!!!! Prying the gear out to engage with the ring gear, so you can take the measurement, will also cause the solenoid to engage and give you a big surprise. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://www.angelfire.com/super/ThunderTruck>http://www.angelfire.com/super/ThunderTruck</A>
    It's a great day to be alive...
     

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