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

Multiple options
Item number: E42404

Bous-Performance Qualifier 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. For use with square bore carburetors like Holley & Edelbrock. This manifold produces power comparable to some single plane manifolds yet retains the throttle response and drive ability typical of a dual plane.


  • Square Bore (non-EGR).
  • 1500 to 6500 RPM.
  • Cast Aluminum.
  • Satin or black Finish.
  • Manifold height: 4.65”
  • 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.