1. Proper Camshaft selection is a combination of first and foremost, your experience coupled with the determined usage; engine displacement, compression ratio, fuel system carbureted or injected, RPM range power desired, transmission type/converter stall speed, vehicle weight, final gear ratio, tire height, cylinder head and valves, head flow

2. An interesting engine development used in some 1975 to 1983 models as well as all carbureted models through 1987 was the CVCC system, where a small auxiliary inlet valve allowed a rich fuel/air mixture into the cylinder near the spark plug, while the main charge was lean.