Ford FE Pulley Kit, 390, 427, 428 V-Belt Ford 390, 427 & 428 FE Engine Pulley Kit - V-belt Made in the USA from 6061-T6 Billet Aluminum Underdrive Ratio Increases Horsepower by 10 - 20 HP Engines without casted V-Groove in dampener 3 Bolt pattern on crankshaft pulley