For use when supercharging LS based small block Chevy motors. This crank pinning system, allows you to precisely drill your factory crank and balancer, allowing you to place a "pin" in between them. This pin then keeps your factory balancer from spinning on the crank snout, that could possibly cause crank damage. Kit comes with drill holder, drill bit, pin, and new crank balancer bolt.
Product Code: PRC-3GKMM-004
