Twin 58mm Throttle Body - 89-92 305/350 TPI

The Twin 58mm Throttle Body for 89-92 305/350 TPI engines is an essential upgrade for enthusiasts looking to enhance the performance of their small-block Chevy. This dual-throttle setup replaces the factory single-bore throttle body, providing improved airflow and responsiveness at mid-to-high RPMs, making it ideal for street machines and racing applications.

Engineered from precision-machined aluminum, this throttle body features matched bore geometry to ensure optimal air distribution to both banks of the engine. The larger 58mm throttle diameter allows for increased airflow, which can lead to better engine performance and efficiency when used with TPI systems.

This throttle body is designed for straightforward installation on 1989–1992 305 and 350 cubic-inch TPI engines, making it a perfect choice for those upgrading their factory fuel injection systems. By enhancing manifold velocity and fuel distribution, it serves as a cornerstone modification for anyone serious about maximizing the potential of their TPI setup.