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Edelbrock Part # 5409 Performer RPM Dual-Quad intake manifold is designed to fit 1958-1965 Chevrolet 348/409 "W" big-block engines with factory large port or with our Performer RPM W-series heads #60809 or #60819. The manifold 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".
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Installation Notes
Recommended intake gasket: Edelbrock # 7240 or Fel-Pro MS9788B
Manifold height: A-4.03", B-5.21"
Carb pad height: 4.62"
Carb recommendations: Edelbrock AVS2 Series # 1903 and # 1904 500 cfm.
Port exit dimensions: 2.39" x 1.15"
Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant # 1076, DO NOT USE END SEALS GASKETS.
Hardened washers Must be used with intake bolts to ensure proper torque and prevent galling of the aluminum.