Chevrolet Performance 12676887 - SP350/357 Dual-Plane Intake Manifold

• Original Equipment on SP 350/357 Engine • Dual-Plane Design for Maximum torque • Designed for 4150-style 4 bbl carb • Fits late-model Vortec style heads • Do not use a carb spacer with this manifold NOTE: Open carburetor spacer is not recommended for use with dual-plane intake manifolds.