Metco LT4 Upper Pulley & Hub

Replace the original supercharger pulley on your Z06, CTS-V or ZL1 with s Metco precision-made overdrive units for more more horsepower and torque. Metco LT4 supercharger pulleys are a three-piece design, utilizing a precision-machined steel pulley hub and an interchangeable aluminum ring and front cover.  The center bore of the pulley hub is sized for the appropriate interference fit and no pinning or drilling is necessary for installation.  The pulley ring and stock-appearing front cover are black-anodized for long lasting surface protection.

Like other Metco Motorsports supercharger pulleys, the interchangeable design allows for easy boost level changes.  Once the pulley hub is installed on the supercharger, the pulley rings (and pulley covers) can be purchased separately and easily changed.

Note 1:  The original belt can be re-used with the 2.40" pulley. OE pulley diameter is 2.50"

Note 2:  The end of the supercharger shaft on the LSA application is not threaded like it is in other applications, so a standard pulley removal and installation tool cannot be used.  The supercharger snout must be removed from the supercharger case and the original pulley must be removed and the new pulley installed using a press or a suitable pulley tool.  *Speed Inc can perform the swap for you* No gaskets need to be replaced and generally no lubricant is lost during this procedure.  As part of this changeover, we highly recommend replacing the original snout isolator, which is problematic and prone to make noise.  Our solid isolator is precision-machined from very high grade materials and installs as a direct replacement for the original.