Does a 1988 2.8 camaro have positive traction?

No, a 1988 Camaro with the 2.8L V6 engine did not have Posi-traction (GM's name for a limited-slip differential). Posi-traction was generally an option, usually found on higher-performance models with V8 engines. The 2.8L was considered a more economical and less performance-oriented engine. It typically came with a standard open differential.