Chevrolet Performance 12366573 - Intake Manifold, Vortec Head Design

• Designed for 283-400-cubic-inch engines using Vortec cylinder
heads P/N 12558060, P/N 19300956, P/N 19300955,
P/N 19331470, or P/N 19331472
• Has 4-bolts per side to attach it to these cylinder heads
• Aluminum high-rise design maximizes horsepower and
delivers a broad torque curve
• Accepts a square-bore 4150-style carburetor and includes
externally plumbed hot water crossover passage
• Use manifold gasket P/N 89017465 and eight attachment
bolts, P/N 12550027