N1RND Posted May 25, 2010 Share Posted May 25, 2010 The th350 in my 72 Monte is not original. Is there a way I can tell what year the tranny really is? Quote Link to comment Share on other sites More sharing options...
USMCBLB125 Posted May 25, 2010 Share Posted May 25, 2010 There should be a code stamped on the transmission. TH350 (1972 and earlier)= on the upper flange of the transmission housing converter opening TH350 (1973 and later) = on the right vertical surface of the oil pan If you find it, go here to decode it Linky Thingy Quote Link to comment Share on other sites More sharing options...
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