The LS3 uses a press-on balancer that doesn't include an anti-rotation mechanism to prevent the balancer from loosening. The Edelbrock kit comes with a drill guide to install a crank pin.

Airaid wanted to make this part of the swap easier so they offer a variety of cold-air kits for classic and late-model Chevys. We were searching for cold-air induction system bits for our '67 ...