supercharger system roots 142 series satin chevy small block kit

These Weiand 142 Pro Street Supercharger Kits are engineered to give you a 25-40 percent gain in power--while maintaining outstanding streetability. These blowers feature all new parts, including new thick-wall cases and rotors to eliminate high-rpm flex. Each 142 Pro Street Supercharger is 100 percent boost tested to ensure you can squeeze out the maximum power and efficiency they offer.