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How to repalce termostat on 79 350 Chevy pick up?

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Answered 2006-07-18 23:40:14

Slightly messy this way... Make sure truck is cold. Unbolt thermostat housing located on the top front of the motor, with the upper radiator hose attached to it. remove housing, remove thermostat. Clean gasket surfaces on intake manifold & thermostat housing. Spread gasket silicone on intake thermostat flange. Install new thermostat, install new gasket on top. Spread gasket silicone on underside of thermostat housing. Bolt housing on intake. Remove radiator cap & top off with 50/50 coolant/water.

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