JEGS 555-30525 Header-Back Dual Exhaust Kit Notes:

• This Exhaust kit is designed for 1978-1988 GM G-Body vehicles that were originally equipped with a Small Block Chevy engine. Does not fit ANY Cutlass Supreme model.
• Designed for use with 555-640600 (TH350), 555-640601 (700R4), or 555-640603 (TH400) crossmembers and header set 555-30060 (sold separately)
• Engine and transmission swaps may require some modifications.

FAQ

Will dual exhaust increase horsepower?

• Dual exhaust can enhance horsepower by improving exhaust flow.
• Optimal performance depends on the vehicle and other modifications.

Are dual exhausts worth it?

• Yes, dual exhaust can boost performance and provide a more aggressive sound.
• Consider your driving preferences and vehicle type for the best decision.

What is considered a true dual exhaust?

• A true dual exhaust system has two separate pipes from the manifold to the rear.
• This design minimizes exhaust interference and enhances performance.

What size dual exhaust for 400 hp?

• For 400 hp, a 2.5-inch dual exhaust is recommended for optimal flow.
• Choose the correct size based on your engine's power and performance goals.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART