RTEC19130001 / 191-30001 - Application Notes 86-90 Chevrolet Camaro & Z28 305/5.0L (3" systems systems - Engine Code F) 86-92 Chevrolet Camaro & Z28 350/5.7L (3" systems systems - Engine Code 8) 86-91 Chevrolet Corvette 350/5.7L (except ZR1) 86-90 Pontiac Firebird 305/5.0L (3" systems - Engine Code F) 86-92 Pontiac Firebird 350/5.7L (3" systems - Engine Code 8)e 8)