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Tranny X-member

Discussion in 'The Garage' started by txfireman110, May 13, 2004.

  1. txfireman110

    txfireman110 1/2 ton status

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    Where do I find the correct crossmember for putting 454/th400/205 in place of my 350/350/205 in the K5, and doing the opposite in the K30??? /forums/images/graemlins/dunno.gif

    PS-thanks for the help earlier today on the motor mounts....the planets are now in alignment /forums/images/graemlins/wink.gif
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    AFAIK the crossmember should be the same. you may have to drill some holes in the frame.
     
  3. txfireman110

    txfireman110 1/2 ton status

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    The frames are different widths, and the x-member in the K30 looks like a "W" and the K5 one is flat aside from the slight dip below the frame. I think I could fanagle the K5 member to work, but the one in the K30 isn't wide enough at the top of the "W" to accomodate the TH350 adapter I don't think.
    Of course, this is a first for me, so I'm scared to screw anything up trying to "fix" it.
    Thanks for any help!!
     
  4. 84_Chevy_K10

    84_Chevy_K10 Banned

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    The frames are the same widths. Use the K5's crossmember though anyway.
     
  5. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    sorry, didn't know what year the k30 was

    they should be the same width. the crossmember needs to stay with the same adapter.
     
  6. txfireman110

    txfireman110 1/2 ton status

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    Thanks, I'll take another look in the morning, maybe just too much grease in my eyes /forums/images/graemlins/bow.gif
    Oh yeah, K30 is an '85.
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    You're going to have to use the K30's crossmember then most likely. You have the flat style crossmember now, and the newer one uses the newer round pattern adapter which will have its own crossmember.
     

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