rainman
Well-known member
Corvette Black Book lists CTU, CTK, and CTR as LT-1 engine codes. According to NCRS no CTR codes were produced. Also, the change over from CTU to CTK was complete by about VIN 9000. Looking through the LT-1 Registry a saw several cars listed with CTR codes and at least one late production car listed as CTU. Just curious if anyone has a car with a CTR suffix or a CTU with VIN greater than 9000.