Items You Need
Header-Back Dual 2-1/2 in. Exhaust Kits With Mufflers
JEGS 555-30525 Header-Back Dual Exhaust Kit Notes:
- Exhaust kit is designed for 1978-1988 GM G-Body that was 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) and header set 555-30060 (sold separately)
- Engine and transmission swaps may require some modification of all items.
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 exhaust 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 right 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 on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Specifications:
Will this headers back system fit a 1980 Oldsmobile Cutlass Calais 442 W30
Will this fit an 84 Buick Regal
I see this will also fit in an 87 El Camino with extensions on the tailpipe. Also, see that it requires the double hump cross member. Will it fit an Elky with a 200-4R, transmission, only listed is the 700R-4. Will that affect the fitment?
Will this fit 1983 Monte Carlo with a sbc 350
Fits my 79 Chevy c10? And includes flange gaskets? What brand and model is the muffler s?
Will this fit a 1982 caprice classic 4 door
Will this fit 1986 monte carlo ss with 200r4 without needing a crossmember
Will this fit a 84 2 door cutlass supreme brougham with a sbc 350 with long tube headers a jegs dual exhaust cross member and a 350 th transmission?
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.