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Cooling System Small Block Pulley Combo

If this small-block pulley combo is used on the street, it's almost guaranteed to cause overheating issues because of the under-driven water pump. A far better pulley ratio will use a crank pulley larger than the water-pump pulley to create a ratio of at least 1:1.1.
How to Design And Build A High-Performance Cooling System

If this small-block pulley combo is used on the street, it's almost guaranteed to cause overheating issues because of the under-driven water pump. A far better pulley ratio will use a crank pulley larger than the water-pump pulley to create a ratio of at least 1:1.1.  View Related Article