Cyclone GM Ls1/Ls2/Ls6 Dual-Plane Intake Manifold, Cathedral Port

The Cyclone GM LS1/LS2/LS6 Dual-Plane Intake Manifold is a top-of-the-line performance upgrade for your GM LS Gen 3 & 4 engines with LS1/LS2/LS6 cathedral port heads. Crafted from cast aluminium with a natural finish, this manifold is designed to deliver optimal airflow in the 1500-6500rpm range, making it ideal for a street performance engine. Compatible with square bore 4 barrel carburettors and throttle bodies, it includes o-rings for a seamless installation. With its cathedral port design, this intake manifold will unleash the full potential of your engine, providing improved throttle response and increased horsepower and torque. Calflow manifolds are cast in high pressure steel dies rather than the pour-in sand molds used by other aftermarket manifold manufacturers. This type of tooling costs 2-3 times more than conventional sand-cast patterns, but the finished product is worth the additional expense. And because the cores (which form the internal ports and water passages) are mounted in steel instead of sand during the casting process, there is no chance of any core shift, which sometimes go undetected in sand castings.