Small Block Chev Hi-Rise Single Plane Intake Manifold 3000-7500 rpm

Overview

Maximize power on small‑block Chevy engines with the Hi‑Rise Single Plane Intake Manifold. Engineered for high RPM performance, this natural cast finish manifold is designed to deliver a steady, even air/fuel flow across a wide 3000–7500 RPM range, making it ideal for carburetted setups seeking top‑end strength.

Key Features

• Hi‑Rise single‑plane configuration for enhanced high‑rpm power and throttle response.
• Natural cast finish with a square bore carburettor pad to accept aftermarket carbs with manual or electric choke.
• Non‑EGR design to preserve optimum airflow and performance.
• Carburettor mounting pad accepts square‑bore carburettors common on performance builds.
• Dual distributor hold‑downs, four corner water ports, and a front fifth water outlet for robust cooling and compatibility.
• Designed for early Small Block Chevy engines in the 302–400 cubic inch range with standard 23° port location heads.

Compatibility and Fitment

Specifically designed for 302–400 cubic inch small‑block Chevy engines operating from 3000 to 7500 RPM. In most cases, it accommodates late‑model water necks, air conditioning, alternator, and HEI ignition systems. The manifold uses standard port location 23° Chevrolet heads and is a dedicated Hi‑Rise race style intended for high RPM and larger displacement applications.

Performance and Installation Notes

• Intake runners should be port matched to your cylinder heads for optimal performance and even air distribution.
• The high‑rise design promotes maximum top‑end power while maintaining strong mid‑range response.
• Carburettor mounting pad is compatible with aftermarket square‑bore carburettors featuring either manual or electric choke options.