Chevrolet Performance 12496820 - Intake Manifold for Vortec Cylinder Heads (Dual-Pattern Carb Mount)

• This dual-bolt-pattern aluminum manifold will work with all Vortec cylinder heads P/N 12529093, P/N 12558060, P/N 19300956, P/N 19300995, P/N 19331470, or P/N 19331472 • Will accept Holley or Quadrajet-style carburetors • Will accept an EGR valve, P/N 17052693 • To block EGR port, use P/N 12556596 • Requires intake manifold gasket kit P/N 19301685 and 8 special manifold bolts, P/N 12550027 NOTE: Open carburetor spacer is not recommended for use with dual-plane intake manifolds.