1967 GMC G25/G2500 Van Engine: 4.6L V8; Standard Rotation|Standard Duty Thermal Fan Clutch;. 1967-1969 GMC G25/G2500 Van Engine: 3.8L L6; Standard Rotation|Standard Duty Thermal Fan Clutch;. 1967-1974 GMC G25/G2500 Van Engine: 4.1L L6; Standard Rotation|Standard Duty Thermal Fan Clutch|w/ AC;.
