Engine Coolant Capacities: Thermostat
On all engines except V6, thermostat is located in water outlet elbow. On V6 engines, thermostat is located on bottom of water pump housing. Thermostat housing connects to lower radiator hose. Test thermostat to see that it starts to open, and is fully open at specified temperatures.
Thermostat Opening Temperatures (°F)
| Application | Starts Open | Fully Open |
|---|---|---|
| 140"4-Cyl. | 188-195 | 212 |
| 2800cc V6 | 192-199 | 226 |
| 200" 6-Cyl. | 188-195 | 212 |
| 250" 6-Cyl. | 193-200 | 221 |
| All V8 | 193-200 | 221 |