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I have a 1973 2wd 302 with a c4 trans. The trans is acting up so I was thinking about going with an over drive. Has any one done this or is there some one out there selling a conversion kit.
You would need to use the trans controller from teh donor vehicle. Sorry if I was too vague, I've done so many conversions over the years that I just assume everyone knows the little stuff.
Another option that some may frown on is the use of a Gm 700R-4 trans via an adapter plate. No electronics needed other than a switch for the lockup, this can be a toggle or a $50 TCI vacuum controlled switch. Either way an adapter plate and a 700R-4 would be a very simple, easy swap that would leave you without a clutter of computer, wires, etc.