MANIFOLDS - Chevrolet - Performer RPM - 348 / 409
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PERFORMER RPM W-SERIES MANIFOLD
FOR 348/409 CHEVY
These new Performer RPM intake manifolds are designed to fit 1958-1965 Chevrolet 348/409 "W-Series" big-block engines. Two version are available; one for small-port cast iron heads and the other for factory large port or with our Performer RPM "W-Series" heads #60809 or #60819. They both deliver improved performance in the mid to high rpm range when combined with Edelbrock carburetor's. Both also feature a front mounted oil fill tube for those who want the nostalgic look of our Classic series valve covers with no breathers. Includes Oil fill Tube (not installed) and matching push-in breather cap. The Oil Fill Tube and Breather are also sold separately as #4803. For square-bore carburetor's only.
Applications Part #
Performer RPM for Chevrolet 348/409 “W-Series” Big-Block, Small Port (non-EGR) #7158*
Performer RPM for Chevrolet 348/409 “W-Series” Big-Block, Large Port (non-EGR) #7159*
 
Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 600-800 cfm (see Carbs & Accessories), use bracket #8032 for 1972-78

Installation Notes: #7158 Recommended intake gasket: Edelbrock #7242 or Fel-Pro MS9459B. Manifold height: A-4.35", B-5.54"; Carb pad height: 4.95". #7159 Recommended intake gasket: Edelbrock #7240 or Fel-Pro MS9788B. Manifold height: A-4.35", B-5.54"; Carb pad height: 4.62" see A/B Measurements. Port exit dimensions: 2.39" x 1.16".
* Not legal for sale or use on pollution controlled motor vehicles.
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