Edelbrock Dual-Quad Manifolds For Chevy 348/409

CHEVROLET 348/409 V8
Performer RPM Dual-Quad Intake manifolds are designed to fit 1958-1965 Chevrolet 348/409 "W" big-block engines. Two versions are available, one for small-port cast iron factory heads and one for factory large port or with our Performer RPM W-series heads #60809 or #60819. These manifolds deliver performance with Edelbrock Performer Series or Thunder Series AVS dual-quad carburetors, and they accept our dual-quad fuel lines, throttle linkage, and air cleaners. Includes Oil Fill Tube (not installed) and matching push-in Breather. Oil Fill Tube and Breather are also available separately as #4803. Carb center-to-center measurement is 6-7/16". Manifold and carb kits are on page 131. Available with satin or EnduraShine finish.
Chevy 348/409 Performer RPM Dual-Quad Intake Manifolds by Edelbrock
Application Dyno Emissions Satin
Performer RPM Dual-Quad Small Port (non-EGR) - 5408
Performer RPM Dual-Quad Large Port (non-EGR) - 5409
Edelbrock Carburetor Recommendation CARB RECOMMENDATIONS: Edelbrock Thunder Series AVS #1803 and #1804 (500 cfm) Carburetor.
Edelbrock Installation Note INSTALLATION NOTE: #5408 Recommended intake gasket: Edelbrock #7242 or Fel-Pro MS9459B. Manifold height: A-4.03", B-5.21"; Carb pad height: 4.62". Port exit dimensions: 2.06" x 1.15". #5409 Recommended intake gasket: Edelbrock #7240 or Fel-Pro MS9788B. Manifold height: A-4.03", B-5.21"; Carb pad height: 4.62". Port exit dimensions: 2.39" x 1.15". For the heights of all Edelbrock manifolds, please visit the the Manifold Reference Dimensions page.

The following guide is designed to help you determine which Edelbrock components are legal for use on your vehicle. Learn more about Edelbrock Product Emissions Guide.

    50-State Legal
    For Racing Use ONLY
    For Use on Pre-Pollution Controlled Vehicles (PPCV)
    Stock Replacement Part
    Engine Swaps