Tubing has been optimized for the 5.0L(305), 5.7L(350ci) and 6.6(400ci) engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque.An added benefit is a more performance oriented exhaust sound. Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends for Strength and Durability.
Maximizing Smoothest High Exhaust Air Flow Rate. TIG Welded CNC Machine Flange. 2-Piece 4-1 Racing Specs Design (8-2-1). Increase High Flow Air, Instantly Gain 10 -15 Hp.1.25" Inlet, 3.00" Outlet. Bolts and Metal Gasket Included. 1 x Stainless Steel Header Exhaust. Fits Small Block V8 Motors. Professional Installation is Highly Recommended. Installation Instruction is NOT Included. Video will open in a new window. DOMESTIC LOWER 48 US STATES. We are not responsible for incorrect or undeliverable addresses. Some of the packages cannot be delivered to a PO Box. Package will be held until a valid physical address is provided. For emissions related items, please check with your local jurisdiction for emission specific requirements before purchasing. All items do not come with installation instruction unless otherwise specified. The item "8-2-1 BLACK EXHAUST MANIFOLD HEADER EXTRACTOR LONG TUBE 84-91 GMT C/K 5.0/5.7 V8" is in sale since Tuesday, August 17, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Manifolds & Headers". The seller is "speed_daddy" and is located in Texas, TX. This item can be shipped worldwide.