Performer RPM - W Series

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. For square-bore carburetor's only.