Hooker 8525-3HKR Cast Iron Exhaust Manifolds 2-1/2" Outlet Black Ceramic Coated

Compatible with Small Block Chevrolet;

Hooker's new cast iron exhaust manifolds offer an increase in performance and visual appearance over stock-style manifolds. Their compact design fit into a wide variety of replacement and engine swap applications. This means you get the traditional look and easy fitment of a stock style exhaust manifold but now with a smoother, cleaner appearance, plus more modern features. These manifolds are cast out of high silicon-molybdenum ductile iron for high temperature strength and better resistance to oxidation and cracking. Internally these manifolds have a larger than stock 1-5/8 inch cross-sectional area and 2-1/2 inch outlets for better air flow and improved performance. These are for rectangular port heads, raised d-port versions are also available. These manifolds are compatible with many popular GM applications including standard straight, Vortec straight and angled plug head designs. These are in a black ceramic coat for performance and to reduce underhood temperatures. Cast-iron finish, silver, and titanium ceramic coated versions are also available. Gaskets and hardware are included, along with weld-on flanges to aid in downpipe installation.;