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How much antifreeze do you put in a 1978 Chevy 350 with stock 3 row?

78 Chevy 350 coolant capacity:

- 18.5 quarts (4.4 gallons) without air conditioner

- 20.5 quarts (4.8 gallons) with air conditioner

Capacity with water pump/thermostat installed

- 20 quarts (4.7 gallons) without air conditioner

- 22 quarts (5.2 gallons) with air conditioner