Chevy SBC 350 Downdraft EFI Stack Intake Manifold System Complete Satin stable air flow at any

stable air flow at any rpm

Welcome to the new era in fuel injection

Speedmaster H-beam connecting rods are one of the strongest connecting rods available

To remain street legal with a square bore carb

Chevy SBC 350 Downdraft EFI Stack Intake Manifold System Complete Satin stable air flow at anyWelcome to the new era in fuel injection! Speedmaster & FAST line of EFI systems are all you need when deciding to upgrade your engine to modern electronic fuel injection. Our EFI systems provide excellent throttle response throughout the RPM range along with smooth engine operation. They also offer the potential for improved fuel economy by making the engine more efficient. Speedmaster EFI systems give you everything you need to add powerful and