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The Edelbrock Performer RPM large‑port single‑quad intake manifold fits 1958–1965 Chevrolet 348/409 W‑series big‑block engines with factory large ports or Edelbrock large‑port W‑series heads. Optimized for square‑bore carburetors, it includes an oil fill tube (not installed) and a matching push‑in breather cap; the oil fill tube and breather are also available separately as Edelbrock #4803 for owners replacing or restoring period big‑block Chevy induction.
Edelbrock Intake Manifold Single Quad Perf RPM BBC 409 Inwin Lg Port As-Cast
