2-Barrel 52mm MPI Throttle Body

The Holley 112-508 throttle body is a high-performance upgrade designed to enhance your engine's airflow and responsiveness. This unit features a Multi-Port Injection (MPI) style with twin 52mm bores, offering a significant improvement over stock throttle bodies. Constructed from durable CNC billet aluminum and finished with an anodized coating, it is built for longevity and optimal performance. It includes all necessary vacuum ports and linkage required for proper integration. For maximum performance gains, Holley recommends that the upper manifold be bored out to precisely match the throttle body's 52mm bore size. This throttle body is specifically noted for its application on 1992-1997 GM LT1 engines, and also mentioned as a replacement for LT1 and TPI throttle bodies for 1985-88 applications. The twin 52mm throttle blades are designed to increase airflow to your engine, potentially adding more horsepower and providing a noticeably quicker throttle response and better acceleration.