Quote:
Originally Posted by aerotruk63
So far that`s the information that we`ve found. The two letters can change with every production year. The RPO `Regular Production Order indicated what was asked for and the two letters informed the guy on the assembly line to put the correct matching parts. For instance a 292 motor for a 4 speed had different ECL than a Powerglide . The assembly line must have had engines set up with clutch assemblies as well as flexplates for Automatics. I still guessing at this point.
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Sorry to be joining late -
I've been building cars in GM assembly plants for 34 years, as a production supervisor, in Product Engineering and (for the last 14 years) in new product launch, and, based on my experience.....
....you are correct.
I don't have much time to write long sweeping narratives but I would be happy to answer any specfic questions you guys might have.
K