*** IN STOCK SHIPS TODAY *** BBC crank hub short, made from billet heat treated steel, has two .250" keyways 180 degree's apart. Uses 2.782" bolt circle and is made to work with 4-71 thru 18-71 roots superchargers.
This hub is for all internal balance BBC engines including 396, 402, 427, 454 and many more. Hub measures from pulley mounting surface to crank gear 1.60".
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