Allstar Performance Crankshaft Pulley, built for Small Block Chevy engines with a short water pump, features a two-groove, 6.625-inch diameter design. Made from natural-finish aluminum, it offers strength with reduced weight for reliable performance. The pulley has a 1:1 ratio and a 5/8-inch diameter center hole, ensuring proper fitment and consistent power transfer. It is available as part of a double groove aluminum pulley kit, which includes belts, crank pulley, and water pump pulley, though each component can also be purchased individually.
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