The exhaust manifolds found in the 1967-1981 Chevrolet Camaro engines were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-1 Mid-Length Style off-road headers are designed to allow the exhaust gasses to flow more freely from each 4 cylinder bank and combine in a more efficient manner. Tubing has been optimized for the Small Block 4.9L(302ci), 5.0L(305ci), 5.0L(307ci), 5.3(327ci), 5.7L(350ci) and 6.6L(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 i.e. Maximizing Smoothest High Exhaust Air Flow Rate 2 X 4-1 High Performance Racing Spec. Design Computerized Mandrel-Bended to Maximize Air Flow Smoothness TIG Welded CNC Machined Flange for Resistance against Cracking and Wearing Increase Engine Exhaust Output and Efficiency Standard SBC 3-Bolt Flange Inlet / Outlet: 2.875" Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq. 100% Brand New Professional Installation is Highly Recommended (No Instruction Included) Notes: Chevy 265-400 Small Block GEN I V8 (Fits Models with 265-400 Cu.In V8 Small Block Engines ONLY)For Year and Model, Please Check Compatibility
Trustpilot
2 weeks ago
1 month ago
