Quote:
Originally Posted by burnem
thanks for your response I do appreciate it, that is how a person learns. what I do know is
that in the 67 3/4 ton 4x4 they used that trans and married it to a Rockwell transfer case I have one of those, the feed back Iam getting says the 4x4 trans is different that the 2wd. one of the biggest question I have is witch number is correct some people say its a SM420 and some say its a FM420 maybe I just heard it wrong FM420.
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Yes SM (1960chevypanel beat me to it) but by 68 I believe GM was using the SM465 not the 420. If it's a married Rockwell, it should be the T221 if I remember correctly.
Do you have a pic of the transfer case and/or adapter to the transmission?