Mike Brichta Posted May 23, 2008 Share Posted May 23, 2008 A guy not too far from me is selling two TH400 transmissions and I'm not sure what they are out of. Both have ID tags that begin with "73C" which I think means 1973 Chevrolet. Does anyone know what the next letter on the tag means? I think it is for the application. What are the possible application letters in 1973? I think the two transmissions have an "M" and "X" next on the tag. Thanks, Mike Quote Link to comment Share on other sites More sharing options...
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