ACTION PLUS SERIES: 180°, dual-plane manifold designed as a stock replacement manifold with improved power and torque characteristics. The effective RPM range of this style manifold is off idle through approximately 6000 RPM. The carburetor mounting pad is designed to accept either a stock or aftermarket carburetor.
STEALTH SERIES: WEIAND's top-of-the-line dual plane manifold combines the low-end throttle response of a 180° design with the top-end power you'd expect of a single plane. Extensive dynamometer testing confirms that 'Stealth' is the ultimate dual plane on the market, with a power range from idle through 6800 RPM. Best suited for engines that are equipped with aggressive camshaft profiles, headers, high performance ignition systems, etc. Features squarebore carburetor pad for aftermarket 4-barrel carburetors.
X-CELerator SERIES: 360°, single-plane, open plenum manifold designed primarily for high-performance street, drag, marine and oval track use. With an effective RPM range of 2000 to 6500 RPM, this series works best with a higher compression ratio, 280° or more of cam duration and headers with 1-5/8" primary tubes. Being a mid- to high-rpm manifold, a standard transmission, or an automatic transmission with a 3000 rpm stall converter, is highly recommended. The carburetor mounting pad is designed to accept current performance aftermarket carburetors. The WEIAND X-CELerator Series is the ultimate street/strip performance manifold for single 4V applications where increased torque and power is required in the mid and high rpm ranges.
TEAM G SERIES: Manifolds are a 360° single-plane, open plenum design developed for competition. Designed by racing legend Bill 'Grumpy' Jenkins, the Team 'G' is used extensively in drag racing, circle track and performance marine applications. The effective rpm range is 2000-8500 RPM. By port matching the manifold to the cylinder heads, the rpm range can usually be raised by 200-800 RPM. For best results, the use of headers and a performance ignition system is highly recommended. The TEAM G is the premier competition manifold for single 4V applications.
HI-RAM SERIES: Manifolds are used primarily in drag racing, tractor/truck pulls and performance marine applications where high rpm is required. The effective rpm range will be between 2,500 to 10,000 rpm, depending on specific model and application. The WEIAND Hi-Ram, with its patented D-shaped port runners and large plenum chamber, provides optimum thrust of the air/fuel mixture to the cylinder head intake ports. For maximum performance in a normally aspirated competition application, the WEIAND Hi-Ram Series is the manifold of choice!