What transmission do i have????

Discussion in 'GM Powertrain' started by naphidim, Dec 24, 2012.

  1. naphidim

    naphidim New Member

    i have a 1990 chevy cheyenne 262 v6 4.3ltr, tbi, it is a manual transmission, has GM8680834 stamped on it (hope this helps someone help me) but i need to know exactly what kind it is, cuz i am thinking of trying to switch it to automatic.... any info would be nice, n thanx
    Last edited: Dec 24, 2012
  2. JTward1

    JTward1 Rockstar 100 Posts

    My neighbor did the reverse a few years back. He took the automatic 200R4 out of his 87 Monte Carlo and put a Ford 5 speed in. he had to make a few trips to some junk yards and Chevrolet @Carlisle got the pedals and the linkage.

    In your case it would be the reverse, I'd go to a few breaker yards, or hit some of the auction sites and get your automatic pedals and a gear indicator, I'm willing to bet your dash is already has the space for the indicator in it. The rest is just finding a column and a good 700R4 transmission for it.
    Last edited: Jan 3, 2013
  3. mfleetwood

    mfleetwood Epic Member 5+ Years ROTM Winner 5000 Posts

    I'm not sure if your still looking for help on this topic, but I moved your thread here as it will garner more responses.

    Good luck!

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