
Magnum Dual-Plane Intake Manifold for Big Block Chevy 9.8 in. Deck with Oval-Port Cylinder Heads
The AFR Magnum Dual-Plane Intake Manifold is engineered for performance Big Block Chevy engines with a standard 9.8 in. deck and oval-port cylinder heads. Its dual-plane runner design is tailored for strong street performance and high-horsepower applications across a broad 1,800-6,200 RPM operating range. The aluminum manifold is a direct bolt-on match for select AFR Magnum oval-port cylinder heads, helping reduce the need for port matching when paired with compatible 265cc, 290cc, or 300cc AFR heads.
AFR 4910 Features:
- Fits Big Block Chevy engines with a standard 9.8 in. deck
- Dual-plane intake manifold design
- Oval-port configuration
- Aluminum construction with natural finish
- 4150 carburetor flange
- Operating range: 1,800-6,200 RPM
- Custom-tailored runners for high-horsepower applications
- Sold individually
AFR 4910 Notes:
- Best fit for AFR Magnum 265cc, 290cc, and 300cc oval-port cylinder heads
- May require porting when matched to other cylinder heads
- Non-EGR design
Power Upgrade for Chevy Big Block Engines
AFR Oval Port Intake Manifolds are the ultimate power upgrade for Big Block Chevy engines. These manifolds are the key to unlocking a new level of performance.


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