*** IN STOCK SHIPS TODAY *** SBC counter balance crank hub. This hub is made from billet steel and has two keyways one .250" and one .187" 180 degrees apart. This hub can be used on externally balanced motors such as the 400 SBC.
Hub has an industry standard 2.00" register for the blower pulley and uses a 2.782" bolt circle with six evenly spaced bolt holes that are 3/8-16 threads.
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