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Edelbrock Performer RPM cylinder head is a bolt‑on upgrade for 1967–1991 AMC 343, 360, 390 and 401 V8 engines, engineered for street performance and muscle car use. It includes adjustable rocker studs and guide plates for small‑block Ford style adjustable rockers, a dual‑drilled intake flange to fit early and late bolt patterns, larger valve springs in complete heads, dual‑quench chambers yielding about 9.5:1 compression and improved mid‑to‑high‑lift flow.
Edelbrock Performer RPM AMC Head (Complete)
