SCCA® Solo classing — unofficial guide
What autocross class is a Chevrolet Corvette (C4)?
CSStreetBSTStreet Touring
A stock 1984–1996 Chevrolet Corvette (C4) runs in CS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within BST tire and wheel limits), it runs BST.
Class by preparation level
| Stock (Street) | CS |
| Street Touring | BST |
| Street Prepared | — |
| Street Modified | SSM |
| Prepared | — |
A “—” means the car isn’t listed at that level; a build lands in the least-prepared category its modifications allow.
Also eligible for
CAM-SClassic American Muscle
From the 2026 rulebook (Appendix A)
Street: 'Corvette (C4, all) (1984-96)' = CS. ST: 'Corvette (C4, excl. LT4 engine & ZR1) (1984-96)' = BST.
Other CS cars
Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on. Spot an error? Report it on GitHub.