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under drive pulley

  1. Heating & Cooling
    I picked up a 2 core, 1" radiator in aluminum. Right now my crank and water pump pulleys are 1:1 at 7 ". I'm looking at a slightly smaller water pump pulley 6.25". I think this will be a favorable under drive to add a little more flow from my stock pump. An article in in July Muscle Machines...