Complete T5 swap thread - one way to skin the cat

[Lugnutz65]

To Jocko and all who read this wonderful post.

A friendly word of warning, SOME OF THE POPULAR T5 INTERNET SITES ARE STILL FULL OF INACCURATE INFORMATION.

As for me, I'm totally sold on the idea of putting a T5 in my 1965 C10 with a 3.73 rear.
Yesterday, I went to the salvage yard and pulled a T5 from a 1989 GMC15. Info that I had from the internet confirmed that it had the gearing I wanted. Unfortunately, I've come to learn that the internet info is VERY UNRELIABLE when it comes to telling you what the gears inside are.

A majority of the websites said the tranny I had pulled had a 3.76 1st gear and a 0.72 OD gear. WRONG. Got it home, opened it up and spun the tailshaft a full turn and watched the input shaft turn a good bit more than 3/4 turn. So I actually have a 0.86 OD and that just will not be good enough for my 3.73 rear.

I can return the tranny and get a refund. I wasted some time but I got some experience and knowledge along the way. Just trying to help my fellow truck owners so they can be spared from the same frustration.