Camshaft "Gen 3" Hot Cam  The "Gen 3" (RPO-LS6) engine is used in all 1997 and later Corvettes, and 1998 and later Camaro/Firebird vehicles. This camshaft is comparable to the LT4 hot camshaft but for your LS1 engine. This kit includes 16 LS6 valve springs P/N 12565117