Speedmaster Chevy BBC 454 Rectangular Port HiRise Aluminum Intake Manifold (Satin) – 1-147-022

The Speedmaster Chevy BBC 454 Rectangular Port HiRise Aluminum Intake Manifold (MPN 1-147-022) is a performance-grade induction component engineered to enhance airflow and horsepower delivery on big block Chevrolet engines. The high-rise design raises the carburetor plenum height, promoting superior mixture distribution and combustion efficiency across the intake runners. Cast from lightweight aluminum and finished in a durable satin coating, this manifold reduces underhood weight while maintaining thermal stability critical for sustained power output.

Designed specifically for rectangular port big block Chevy cylinder heads, this intake accepts standard four-barrel carburetors and is ideal for street, strip, and vintage racing applications. The manifold's engineering supports both daily driving and high-performance scenarios, making it a versatile upgrade for enthusiasts restoring or modifying BBC 454 engines. Installation integrates directly with compatible BBC block and head configurations, offering a direct bolt-on solution for classic Chevrolet builds.

Key Features & Benefits

• High-Rise Design: Elevated plenum maximizes air velocity and mixture distribution for improved combustion.
• Rectangular Port Match: Engineered specifically for BBC rectangular port cylinder head configurations.
• Aluminum Construction: Lightweight material reduces underhood weight while maintaining durability and thermal performance.
• Satin Finish: Professional appearance with corrosion-resistant surface coating.
• Carburetor Compatible: Designed to accept standard four-barrel carburetor mounting.

Specifications

Ideal Applications

• Street performance and daily-driven classic Chevrolets
• Vintage and nostalgia drag racing builds
• High-performance engine swaps and restorations
• Muscle car and hot rod customizations