LT4 Interchangeable Crank Pulley Kit

The Metco Motorsports Interchangeable Crank Pulley Kit for LT4 Applications is designed for the 2016 & Newer Cadillac CTS-V and the 2017 & Newer Camaro ZL1, utilizing the Innovator's West Super Duty balancer assembly (PN 8410). This kit offers a straightforward method to increase boost and horsepower on supercharged vehicles without permanent modifications. The Innovator's West balancer is precision-machined in the USA and replaces the factory cast unit. It is SFI-approved and weighs only 12.6 lbs, significantly lighter than the stock 16.2 lb steel unit. This reduction in rotating mass, combined with the wet clutch harmonic dampening technology from Innovator's West, enhances performance. The kit includes CNC-machined crank pulley rings that attach to the balancer, allowing for simple boost adjustments by swapping the outer ring. For vehicles producing 750HP or more, the Super Duty Hub Upgrade is recommended, featuring a larger, higher-grade steel hub and a new seal for the front cover. Specific pulley rings require specific belts: the 9.10" kit needs the 080842HD belt, the 9.55" kit uses the K080850HD belt, and the 10.0" kit uses the K080865 belt. Please consult the belt chart under the RESOURCES tab for correct belt selection. Important fitment notes: This kit does not fit the 2015 and newer Corvette Z06. In LT4 applications, idler pulleys do not need changing to fit crank pulley rings up to 10.5". However, in select ZL1 applications, rings 9.55" and larger may interfere with the front sway bar.