How do you flush cooling system in Chevy 305?

Answer 1

To flush the cooling system in a Chevy 305, start by ensuring the engine is cool, then disconnect the lower radiator hose to drain the coolant into a suitable container. Use a garden hose to flush water through the system until it runs clear, then close the drain and refill the system with a 50/50 mix of coolant and distilled water. Run the engine with the heater on high for a few minutes to circulate the new coolant, and check for any leaks before sealing everything back up. Finally, monitor the coolant levels and top off as needed.