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1979 to 1991 flexplate

Discussion in 'The Garage' started by barneybasher1010, Apr 24, 2007.

  1. barneybasher1010

    barneybasher1010 1/2 ton status

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    PORTERVILLE CA
    I am putting a 1991 350 motor in my 1979 blazer and need to know what flex plate to use. The 1991 had a 700R4 tranny and my 1979 has a 350 tranny. I am keeping the 350 tranny in it. Do I use the flex plate off my old motor or do I need to get another one? THANKS
     
  2. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    You will need the flexplate for the engine. The bolt circle changed with the invent of the 1 piece rear main seal (1986). You just need to know how many tooth flexplate you have and then also make sure of the bolt circle for the convertor.
     

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