Coated Headers - BBC

Long Tube Headers are typically used for higher RPM horsepower, but can also increase the mid-range torque in applications where there is room to fit a long tube design. 1970-74 Chevy Big Block V8 Full-Size & A-Body applications. See entire application list on the product page below. 1 7/8" Primary Tubing Diameter 3 1/2" Collector Port Diameter Same as Port Port Shape Metallic Ceramic Coating. Why pick Patriot's Metallic Ceramic Coating finish? Our Metallic Ceramic Coating protects and extends the life of headers by creating a thermal barrier which significantly lowers under hood temperatures and protects the substrate metal from thermal fatigue. After the Metallic Ceramic Coating is applied, it is polished with a vibratory finishing process that produces a high luster aluminum appearance. The polishing process compresses and activates the coating, creating a surface which is harder and 60% more corrosion resistant than an unpolished surface.