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I heard that I may need to pin my balancer, what does that mean?

May 8, 2021

On some late model GM engines, the balancer is a press fit instead of using a keyway to hold it in place. This works fine until a supercharger kit is added. The additional stress of the belt driven supercharger requires either a keyway be machined or the usa balancer pin kit, which is available from many speed shops.