AMC Performer Manifold - 290-401

The Edelbrock AMC Performer Manifold 290-401 is a dual-plane aluminum intake manifold engineered for AMC V8 engines requiring square bore carburetor mounting. This casting represents a purpose-built solution for builders seeking measurable intake flow optimization without extensive head or block modification. The dual-plane design distributes fuel charge across engine speeds, targeting mid-range torque delivery where real-world driving demands occur.

Built from aluminum and finished in natural cast appearance, the manifold weighs 21.14 lbs and measures 15.45 x 7.8 x 24 inches—dimensions that account for clearance requirements in AMC engine bays. The square bore design ensures compatibility with traditional carburetor linkage and fuel inlet configurations common to AMC V8 platforms. Dual-plane geometry separates intake runners to reduce cross-cylinder reversion, improving volumetric efficiency across the RPM band without requiring port matching or extensive gasket surfacing beyond standard preparation.

This manifold targets AMC V8 engine builders and restoration specialists working with 290, 304, 360, or 401 cubic inch displacement platforms. It addresses the core requirement: affordable intake flow improvement without custom fabrication. Installation requires standard gaskets and fasteners; verify carburetor adapter compatibility before ordering. The natural finish accepts paint or powder coating if cosmetic integration with custom engine builds is desired.

Edelbrock's Performer series occupies the efficiency tier between stock OEM manifolds and race-specific designs. This particular casting suits street and light-duty applications where throttle response and mid-range power matter more than peak horsepower. Buyers should confirm bolt-pattern compatibility with their specific AMC block variant before purchase.