Weiand MANIFOLD – BBC, RECT 4500

Weiand MANIFOLD – BBC, RECT 4500

The Weiand MANIFOLD – BBC, RECT 4500 is a high-performance single-plane intake manifold designed to provide ultimate airflow and power for Big Block Chevy engines. Engineered for drag racing and high-displacement builds, this manifold features an open plenum design to maximize horsepower and torque in the 3,500-8,000 RPM range.

Key Features

• Single-plane open plenum design for maximum high-RPM performance
• Computer engineered for superior cylinder-to-cylinder distribution
• Precision CNC-machined aluminum construction for optimal surface finish
• Isolated plenum design to keep air/fuel mixture cooler

Specifications

• Power Band: 3,500 – 8,000 RPM
• Carburetor Flange: 4500 Dominator Style
• Port Dimensions: 2.28″ High x 1.48″ Wide (Rectangle Port)
• Manifold Height: Front 5.96″, Rear 5.96″

Fitment

• Big Block Chevrolet (Mark IV-VI) 396-502 CID Engines
• Fits Standard Deck Height Blocks
• Requires Rectangle Port Cylinder Heads

Note: This manifold is intended for competition use and may require hood modifications or carburetor re-jetting for optimal performance; verify clearance before installation.