Hello, on a 1991 Chevy pickup, 4.3 engine, does anyone know if the thermostat spring faces up or down?? It has reverse flow water pump. Thanks, Tim
Hello, on a 1991 Chevy pickup, 4.3 engine, does anyone know if the thermostat spring faces up or down?? It has reverse flow water pump. Thanks, Tim
Down
Reverse rotation, not reverse flow.
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