FIT 67-74 SBC V8 LS/LS1-LS6 LSX SWAP STAINLESS LONG-TUBE HEADER EXHAUST MANIFOLD

Kaotic Speed 4-1 Long Tube off-road headers for 1967-1974 Chevy Pontiac Buick and Oldsmobile chassis swapped to the new LS based engines 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 LS1 and LS6 engines will also fit LS based truck engines 4.8/5.3/6.0). 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

• 4-1 High Performance JDM Racing Spec. Design, Produces the Most Top End Power

• Offers the Best Flow Characteristics for the Engine at High Engine Speeds

• Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq.

• For Chevy LS V8 Engine swaps only

• Inlet/ Outlet: 1-7/8" OD / 3.00" OD

• 6-Bolt Exhaust Outlet Flange

• 16 Gauge Wall Piping

• 9mm Exhaust Manifold Flange Thickness / 8mm Collector Flange Thickness

• TIG Welded CNC Machine Flange

• O2 Sensor Bung Insertion and Metal Gasket Included

   

   

  Includes:

   

• 1 x Set of Exhaust Headers

• Hardware as Shown in the Picture Above

   

   

  Notes:

   

• 100% Brand New

• Professional Installation is Highly Recommended

• For LS V8 Engine Swaps only

• Installation Instruction is NOT Included