Twin-Scroll Turbo Manifold for Chevy Inline-6

The SPA Turbo TMC05T4 is a high-performance turbo manifold engineered from durable ASTM A536 Grade 584 nodular iron. It is designed with a T4 divided turbocharger flange and a high-flow wastegate port, offering improved flow characteristics and reduced weight compared to the TMC02 style. This design ensures equal flow from all cylinders, leading to better boost control on high-output engines and enabling the potential for 400 reliable horsepower and significant torque. This manifold is specifically designed for Chevrolet 194, 230, 250, and 292 cubic inch inline-6 engines. The construction from nodular iron provides robustness for demanding applications. The turbo flange specifications include T2 bolt holes at M8x1.25 and T3/T4 bolt holes at M10x1.5, with wastegate flange bolt holes at M8x1.25. Note that a custom wastegate mount is required and not included with the manifold. SPA Turbo has been providing quality performance components since 1990 and offers a wide selection of turbo manifolds, including hard-to-find applications. This product is intended for high-performance, racing, competition, or off-road use and may not be legal for use on public roadways. Customers acknowledge that automotive performance parts may alter vehicle characteristics, require professional installation, and may affect emissions compliance, durability, and safety. Improper installation, misuse, racing use, or operation outside manufacturer specifications can void return eligibility and manufacturer warranties.