Bous-Performance intake manifold, dual plane, 1500 to 6500RPM, small-block Chevrolet

Multiple options
Item number: E42403

Bous-Performance dual plane, 1500 to 6500RPM, manifolds are perfect for your stock to mild-modified small-block Chevrolet engine. These manifolds come in a satin or black, finish to match your needs. Also they have a dual carb pattern, accepting spread bore carburetors like Quadrajets and includes adapter for use with square bore carburetors like Holley & Edelbrock.


  • Square Bore (non-EGR).
  • 1500 to 6500 RPM.
  • Cast Aluminum.
  • Satin or black Finish.
  • Port exit dimensions: 1.17" x 1.90".
  • Estimated runner length - Shortest: 4.00".
  • Estimated runner length - Longest: 7".
  • Manifold height: (A) 4.29", (B) 5.31".
  • Will also Fit 1987-Up stock aluminum heads (does not fit 1987-Up cast iron or Chevrolet Bow Tie heads).
  • Accepts late model choke, water neck, AC, alternator, and HEI.