There were only two Corvairs that I can think of that ran in the Trans-Am series and that was during the first season, 1966.
They were run by Spurgeon May and Don Eichstaedt. Hopefully I can dig up some material on those cars. The Corvair was
at a disadvantage in Trans-Am because its engine was too large for the under 2-liter class and way too small for the over
2-liter class. In D/Production with the Yenko Stinger package, they did quite well and were the National Champion in 1967.
In other forms of racing such as slaloms and hill climbs, where rules were not quite so restrictive, you can see in the article
below that the Corvair did quite well for itself.Jon Mello Collection