1961 Chevrolet P30 Series Engine: 4.6L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;. 1961 Chevrolet P30 Series Engine: 5.7L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;. 1962 Chevrolet P30 Series Engine: 4.6L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;.