392/417 Hemi crank hub, 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 16-71 superchargers.
Included in this kit is a hub, alum. degree ring with 360 degree's of marks, six grade 8 bolts and washers. This hub is for all internal balance Hemi engines including 354, 392, 417 and many more.
Hub measures from pulley mounting surface to crank gear 2.220".
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