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1964 Pontiac Tempest Custom

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From the factory, a coolant hose connects from the passenger head to the heater core, and then to the water pump. Bob added a fitting to the driver-side head, and T'd the coolant hoses from each head together before routing them to the water pump. According to Bob, this setup helps cool the motor more efficiently.
Bob Davis' '64 Pontiac Tempest Custom - Beyond The Mystique

 From the factory, a coolant hose connects from the passenger head to the heater core, and then to the water pump. Bob added a fitting to the driver-side head, and T'd the coolant hoses from each head together before routing them to the water pump. According to Bob, this setup helps cool the motor more efficiently.  View Related Article

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