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 material
TIG welded CNC machine flange
Inlet / Outlet: 1.8" x 1.5" (Oval) / 2.85"(ID), 3"(OD)
Come with Two Reducer: 2.125" Outlet
2 x 4-1 Racing design
Increase high flow air, instantly gain 10 to 15 Hp. / Tq.
Includes:
1 x Header exhaust system
All necessary installation hardware
Notes:
100% Brand New
Professional Installation is Highly Recommended
Installation Instruction is NOT Included
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