• 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

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

NOTE: Open carburetor spacer is not recommended for use with dual-plane intake manifolds.