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C10 - C90 Bill · 03-27-2011, 08:56 PM

Well if that's the case about accidently shifting into first, GM wasn't worried about it in '72. I have the original 3-Speed in my '72 C-10 and it is synchronized. Not sure when the swichover year was, but I believe '71's had them too, if not even earlier. In my opinion, they had non-synchro trans in trucks for years, and they were just slow to switch them over.

Bill

03-27-2011, 08:56 PM	#8
C10 - C90 Bill Registered User Join Date: Nov 2001 Location: Moneta, VA USA Posts: 3,067	Re: 3 speed trans. question Well if that's the case about accidently shifting into first, GM wasn't worried about it in '72. I have the original 3-Speed in my '72 C-10 and it is synchronized. Not sure when the swichover year was, but I believe '71's had them too, if not even earlier. In my opinion, they had non-synchro trans in trucks for years, and they were just slow to switch them over. Bill