BBC Stealth (Oval Port)

The BBC Stealth (Oval Port) by WEIAND is a precision-engineered intake manifold designed for big-block Chevrolet engines seeking maximum performance with minimalist aesthetics. This oval-port design delivers exceptional flow characteristics while maintaining a low-profile footprint that appeals to builders prioritizing engine bay cleanliness and functional elegance. Built for enthusiasts who refuse to compromise between raw power and refined appearance, the BBC Stealth represents the intersection of racing heritage and modern intake technology.

The oval-port configuration optimizes air velocity and volumetric efficiency across the RPM band, a critical advantage for BBC applications from mild street builds to high-horsepower racing platforms. WEIAND's engineering focuses on minimizing turbulence and maximizing fuel distribution through precisely contoured runner geometry, which translates to improved throttle response and measurable gains in mid-range and peak horsepower. The stealth design eliminates unnecessary bulk and external brackets, reducing weight while allowing easier engine compartment packaging—a practical benefit when space becomes premium in tight installations. Weighing 24.46 pounds, this manifold strikes an ideal balance between structural integrity and light weight, contributing to improved power-to-weight ratios on both street and strip applications.

The BBC Stealth excels for big-block Chevrolet engines in the 427–502 displacement range, making it the intelligent choice for vintage muscle car restorations, street rods, and competition vehicles where intake manifold flow becomes a limiting factor. Installation suits carbureted setups most effectively, though the manifold's compatibility with various fuel delivery systems provides flexibility across different build philosophies. Serious builders upgrading from factory cast-iron manifolds will experience noticeable improvements in responsiveness and peak output, particularly when paired with quality cylinder heads and optimized cam timing. Professional installation is recommended to ensure proper gasket sealing and port matching for maximum efficiency gains.