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What do you guys with 4L80s do about cross members?

Discussion in 'The Garage' started by 74kay5, Dec 17, 2004.

  1. 74kay5

    74kay5 1/2 ton status

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    There seems to be a lot of people swapping 4L80's in their K5's recently. Isn't it longer? Do they need a custom cross member or can the adapter mount at the stock location?
     
  2. 74kay5

    74kay5 1/2 ton status

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    ttt

    ttt
     
  3. 1-ton

    1-ton 1/2 ton status Premium Member

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    I would say you are definitly going to have to build either a custom cross member or trans mount. It dependes on how close the 4L80E trans mounting piont comes to the factory cross member. You will probably need to have a custom drive shaft built as well, but it will be worth it it the end because 700R4 transmissions SUCK big time.
     

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