CHEVROLET 348/409 W-SERIES V8 PERFORMER RPM DUAL-QUAD (1500-6500 rpm)
These new 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 new Performer RPM
W-series heads #60809 or #60819. These manifolds deliver performance improvements in the 1500-6500
rpm range with Edelbrock Performer Series or Thunder Series AVS dual-quad carburetors, and they accept
our dual-quad accessories including fuel lines, throttle linkage, and air cleaners. Includes Oil Fill Tube (not
installed) and matching push-in Breather. The Oil Fill Tube and Breather are also available separately as
#4803. Both intakes have grommet-style PCV provision in back of manifold (baffle included).
Applications
Part #
Performer RPM Dual-Quad Small Port (non-EGR)
#5408*
Performer RPM Dual-Quad Small Port with EnduraShine Finish (non-EGR)
#54084*
Performer RPM Dual-Quad Large Port (non-EGR)
#5409*
Performer RPM Dual-Quad Large Port with EnduraShine Finish (non-EGR)
#54094*
Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 500 cfm.
Installation Notes: #5408 Recommended intake gasket: 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: Fel-Pro
MS9788B. Manifold height: A-4.03", B-5.21"; Carb pad height: 4.62" (see page 56).
Port exit dimensions: 2.39" x 1.15".
Nascar Edition
Installation Notes: #5408 Recommended intake gasket: 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: Fel-Pro
MS9788B. Manifold height: A-4.03", B-5.21"; Carb pad height: 4.62" (see page 56).
Port exit dimensions: 2.39" x 1.15".