Intake Manifold, AFR Elim. Race, SBC, 4150 Single Plane, 3500-8500 RPM

AFR Eliminator Race Intake Manifold, Small-Block Chevy, Single-Plane, 4150, 3500–8000 RPM

High-rise aluminum single-plane intake for 23° small-block Chevy heads, with 4150 carburetor flange.

Engineered for high-RPM performance, the Air Flow Research Eliminator Race intake manifold delivers a race-oriented induction solution for small-block Chevrolet engines equipped with 23° cylinder heads and standard intake port locations. Its single-plane aluminum design is intended for larger-displacement street/strip engines and dedicated racing applications operating between 3,500 and 8,000 RPM. The manifold features a 4150-style carburetor flange with AFR's distinctive clover-shaped carburetor pad opening, designed to optimize airflow when paired with compatible AFR cylinder heads. Cast and machined in the USA, this high-rise intake manifold features a 5.50" carburetor pad height and as-cast intake ports measuring 2.01" high by 1.09" wide. Integrated nitrous bosses provide provisions for custom nitrous system installations, while front and rear coolant outlets offer additional cooling system configuration options. Dual distributor hold-down provisions add installation flexibility for performance engine builds. For proper sealing and installation, AFR recommends its #6901 intake manifold gasket, along with optional #4450 open or #4460 four-hole composite carburetor spacers.

Features • Genuine Air Flow Research Eliminator Race intake manifold, #4811 • Designed for small-block Chevrolet V8 engines • Compatible with 23° cylinder heads with standard intake port locations • High-performance single-plane aluminum construction • Operating range of 3,500–8,000 RPM • Designed for serious street/strip and racing applications • Accepts 4150-style four-barrel carburetors • Unique clover-shaped carburetor pad opening • 5.50" carburetor pad height • As-cast intake ports measure 2.01" high x 1.09" wide • Integrated bosses for nitrous system installations • Front and rear coolant outlet provisions • Dual distributor hold-down provisions • Natural as-cast aluminum finish • Cast and machined in the USA