FOR 70-87 CHEVY SBC 267-400 V8 STAINLESS STEEL LONG TUBE HEADER EXHAUST MANIFOLD
- 100% brand new, Never been tried or installed
- Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends for Strength and Durabilityi.e. Maximizing Smoothest High Exhaust Air Flow Rate
- 4-1 High Performance Racing Spec. Design
- TIG Welded CNC Machine Flange
- O2 Sensor Bung Insertion and Metal Gasket Included
- Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq.
- No instructions included, Professional installation is highly recommended
NOTE:The exhaust manifolds found on the 1965-1974 Small Block Chevy 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 Long Tube 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 283/302/305/307/327/350/400 cubic inch 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.
- 1 x Set of exhaust header
- All necessary hardware, bolts, and gaskets as pictures show
- Fits Small Block Chevy motors only. Will not fit Big Block equipped vehicles
- For Year and Model, Please Check Compatibility