Ford SOHC 7" Waterpump Pulley (Dual Groove)
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Reduces water pump RPM for maximum efficiency
Eliminates excess drag on your engine
Eliminates water pump cavitation
Saves 3-5 horsepower
Releases horsepower by under driving the water pump and alternator. When paired with our underdrive lite-weight 7" water pump pulley, it reduces the water pump speed to 57% of the crank speed allowing the water / coolant to absorb more temperature from the engine. This maintains a 40-45% underdrive ratio for high RPM engines that need the water to pass through the block and head at a slower rate to absorb more temperature.