6-71 671 blower supercharger " triple pin kit " 471 871 6v71 8v71 92 series

Description

Triple pining your gear ends of the rotor adds strength to the shaft and prevents rotor shift , the cause of major rotor failure. engine back-fire can stop rotor rotation. This shock can cause the stock single pin to wear or shear , the rotor then becomes out of time causing rotor to rotor meltdown.
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