12366573
Intake Manifold, Vortec Head Design

• Designed for 283-400-cubic-inch engines using Vortec cylinder heads P/N 12529093, P/N 12558060, P/N 12497186, P/N 12464298, P/N 25534421, or P/N 25534446
• 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

NOTE: Vortec heads were originally released on 1996-1999 truck engines. Check for hood clearance, especially with Corvette.