If it's not a Corvair, it doesn't have a Corvair engine. Unrelated to any other GM design.
You lost me there. How could an S10 engine not be a GM design? AFAIK the 2.2L 4cyl is a GM design.
The Corvair had a turbo-6 engine, which was a rear mounted engine that was air cooled like a Porsche engine. AFAIK, this was the only American car to be built with a rear mount air cooled engine. The 4cyl in the S10 was about the same size. The S10 did have a Vortec in it that was a straight/inline 4. That was definitely a GM engine and was in several other cars, the Corsair, Baretta, Corsica, Lumina, etc...I just looked it up.
I'm not sure how those can't be GM engines...
My T5 evidently came out of an S10 with a 2.2L engine, so it seems by looking at the model numbers.
