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Thread: 62 buick 401 oil Pressure high then go's low

  1. #1
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    62 buick 401 oil Pressure high then go's low

    i have a 1962 buick lesabre 401 nailhead when i start the car i have 40lb oil pressure .then it drops to 20lb when i drive it stays around 20lb.at a light or stop i get 30lb...it has dropped to 10lb..is it the gauge or pump.i am thinking of redoing the motor this winter.i found a delux eng kit on ebay for 1299.99..the car was a frame off restore in 2005 but never did anything to motor ..thanks Rich

  2. #2
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    Quote Originally Posted by jr2012 View Post
    is it the gauge or pump
    It might not be either one. Depending on how many miles you have on the engine, it could be time for a rebuild. As the engine wears, the bearing clearances get looser, which causes the oil pressure to drop.

    Ray

  3. #3
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    it has 104,659 mil, thanks Rich

  4. #4
    Sounds like time for a rebuild. Time & mileage can wear things out.
    Tom Telesco
    Classic and Muscle Automotive
    12 Cook St.
    Norwalk, CT 06853-1601
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