1970 GMC G35/G3500 Van Engine: 4.1L L6; Standard Rotation|Optional Non-Thermal Fan Clutch|w/ AC;. 1970 GMC G35/G3500 Van Engine: 5.0L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;. 1970 GMC G35/G3500 Van Engine: 5.7L V8; Standard Rotation|Optional Non-Thermal Fan Clutch|w/o AC;.
