whats was the name of the 4spd trans that came in the 1980 z28 was it a m22

 

Borg Warner Super T-10

 

there were 3 models of trannys "Muncie, Saginaw, Borg Warner". So your going to need to look up the Identification code to find out what the car accually has.

 

In 1980, I think the "Muncie" tranny was actually the Saginaw (built by Muncie, but not an M20, M21, or M22). There's nothing real in depth on www.nastyz28.com about the trannies in '80. I know that out of 2 '80/'81 Z28's that I scrapped, 1 had a Saginaw, the other was a Borg Warner T-10 (which is now broken on the garage floor, after our '73 thrashed the $h!t out of it!!!).

 

Super T-10's are rare and were only available behind big blocks. Not likely on an 80's Z.

 

So if I had a T-10, it wasn't original to the '80 Z28?

 

The Borg Warner Super T-10 is not rare. It was standard on all late 2nd gen Z28s- '77-'81. Ratios varied, but for 1980, with a 350, it should be a 2.64:1 1st gear. For 1981, only 305s could get the 4-speed (except Canada, which still had the 350-4sp), and it was a 3.42:1 1st gear.

 

You are absolutely correct. This is what I get for writing before thinking.

 

Saginaws are junk, in my expereince