1966 GMC G1000 Series 3.2L 6 Cyl CARB Naturally Aspirated GAS. 1966 GMC G1000 Series 3.8L 6 Cyl CARB Naturally Aspirated GAS. Notes: Engine Coolant Thermostat -- New; AIR 195 DEG. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
