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Did the 140Amp pontiac alternator upgrade

Discussion in 'The Garage' started by TJS, Jan 31, 2005.

  1. TJS

    TJS 1/2 ton status

    Joined:
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    Location:
    Westport,CT
    I used a 140amp alternator from 94 Pontiac transport with rear air and the plug in adapter. It is on an 85 K-10with SBC 350. I had to modify the upper bracket where it bolts to the manifold. I had to weld a tab to it and relocate and slot a new hole(thank God for my Bpt. Milling machine). The next mod was in the back of the alternator where the lower bracket bolts to the back of the alt. I had to weld a tab and drill a hole in line with the threaded hole on the alternator. This is the best mod I have done for the charging system of the truck. At idle with the system loaded (lights, blower, etc) it does not budge on the gauge(steady at 13.8v). I plow with this truck and I will report back when plowing. I will take some pics of the brackets when I get a chance.
    T.J.
    www.tjsperformance.com
     
  2. 84gmcjimmy

    84gmcjimmy 1 ton status

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    Pics? Sounds interesting! :)
     
  3. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Jan 21, 2001
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