LSA / LS9 / LT4 Supercharger Porting | Race-Level Performance Upgrade

The F.A.S. Motorsports LSA / LS9 / LT4 Supercharger Porting service is a full race-level porting package for the General Motors positive displacement superchargers found in some of the most iconic American performance vehicles — including the Chevy Corvette Z06, Camaro ZL1, Cadillac CTS-V, and other LSA, LS9, and LT4-equipped platforms. The factory GM superchargers are excellent units, but like all OEM superchargers they contain casting restrictions, rough port surfaces, and suboptimal transitions that limit peak airflow at high boost and RPM. The F.A.S. Motorsports porting service addresses all of these restrictions through a full race port of the supercharger internals, including the 102mm snout port opening, inlet port passages, rotor housing discharge, and blower body transitions. The porting process removes material in key locations to improve airflow volume and velocity while reducing turbulence and parasitic losses, resulting in measurable increases in power output at the wheels. The snout port to 102mm allows for a larger throttle body and improved inlet flow, a critical upgrade for builds using an aftermarket 102mm throttle body upgrade. This is a send-in service — customers ship their supercharger to F.A.S. Motorsports, where skilled technicians perform the complete race porting procedure and return the unit ready for reinstallation. The service is compatible with both stock and modified builds and pairs particularly well with tune upgrades, pulley swaps, and other supporting modifications designed to maximize power on these legendary GM platforms.