Flexplate Question

Discussion in 'Race 400/430/455' started by Bob Lorenz Jr., Nov 10, 2004.

  1. Bob Lorenz Jr.

    Bob Lorenz Jr. Well-Known Member

    I have a stack of flexplates from various buick engines. Is there any easy way to tell a 350 from a 455 flexplate? Thanks

    Bob Lorenz
     
    Bob Lorenz Jr., Nov 10, 2004
    #1
  2. dcm422

    dcm422 Well-Known Member

    Hi Bob,
    Am pretty sure that the 400-430-455 ones had round holes in them (six ones I think) and the 350 ones have much larger oblong opennings. The 455 ones are supposed to different than the 400-430 ones. Seem to recall that they are a little thicker, but don't hold me to it.


    Mark
     
    dcm422, Nov 10, 2004
    #2
  3. JSteele

    JSteele Well-Known Member

    455's are an externally balanced motor whereas I don't think the 350 is.Therefore, there should be a counterweight on the 455 flexplate, I think.
     
    JSteele, Nov 28, 2004
    #3

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