Uses six .375" bolts on a 2.782" bolt circle and is made to work with 6-71 thru 18-71 roots and screw superchargers. This hub is for all internal balance Hemi engines including 426, 440, KB, BAE, TFX and many more. Hub measures from pulley mounting surface to crank gear 1.200" and works with Bryant and Winberg crankshafts. Splined hub take the place of the industry standard short crank hub and works with existing idler bracket and blower pulleys.
Hub uses #2300-0065 crank bolt with #2300-0036 crank bolt washer that can be purchased separate if the racer chooses.