Description
Installation Note:
Installation Notes:
- This system is only compatible with Duff/Drake short tube headers #3106
- Does not work with James Duff 4-Link
- Only compatible with stock dana 20 transfercase
- Modification is required for 76-77’s equipped with catalytic converters.
- Designed to work with the stock transmission cross member or the advanced adapters cross member #3654.
Contents
Includes:
- 2 Header Adapter Pipes
- 2 Intermediate Pipes
- 2 Mufflers – Choose Magnaflow or Borla
- 2 After Muffler Pipes
- 2 Tail Pipes
- 10 Stainless Band Clamps
- Hardware Kit
Options:Â
- Purchase Duff Shorty Headers (3106) at the same time.
- You can purchase angled or straight exhaust tips to finish the exhaust off.
- We highly recommend purchasing the premium header bolts (3082) and Remflex gaskets for a trouble-free install.
- Optional ceramic coating that resists temperatures up to 1600° F. They are chip, and abrasion-resistant; lower underhood and floorboard temperatures; and have a “polished/aluminum” look that does not blue.
- Optional satin black cerakote option comes with the same benefits and has even higher heat resistance up to 2300° F and cerakote is even more durable than ceramic.
Information
Looking for the best exhaust to run with the Duff’s/Drake short tube headers for your early Bronco? This is it. We’ve taken our aluminized Dual Exhaust kits and made them into 304 CNC Bent Stainless.
After 20 years of selling our incredibly popular dual exhaust, we decided to give the kit a few updates and upgrades. We separated the back pipes from the muffler back into 2 sections allowing for options on the tailpipe exit angles and their easy removal & installation for trail riding to avoid tearing them up. If you do smash one of the tailpipes on the trail you can purchase new replacements here. It comes with mandrel-bent 304 stainless 2 1/4″ diameter pipes and mufflers of your choice: Magnaflow or Borla.
Fits whether you have a 302 or 351W, stock or heavy-duty aftermarket motor mounts, stock-3″ body lift, our Extended Radius Arms, Torque Tamer Traction Bar, 4″ Rear Bump Stops, and the new LCR SS20 gallon gas tank. Also fits other aftermarket larger main gas tanks up to 23 gallons.
Use the drop-downs to configure your exhaust. If you have a non-standard engine-transmission combination, please use the notes section at check out and we’ll contact you if there is a fitment issue.
NO WELDING REQUIRED, can be installed in your driveway. Exhaust pipes exit just behind both rear wheels, choose 65° or 90° angle.
Comes with instructions, hangers, and mounting hardware. Â
Muffler choices:
- Magnaflow Stainless Steel: MagnaFlow performance mufflers are designed to provide your Bronco with more power and a nice, resonant mellow deep sound. These mufflers feature a large-diameter, perforated stainless steel core with a straight-through design-for unrestricted flow and sound control. All contact points are lap-jointed and welded to avoid distortion or cracking at the seams. Mufflers are constructed from 409 Stainless steel.
- Borla PRO XS Stainless: Compact size is perfect for applications with limited space. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Deep mellow rumble then quiets down during cruising.
Features
Features:
- 304 16g Stainless Mandrel Bent Tubing
- Fits 289, 302/5.0L, and 351W/5.8L
- Compatible with C4/AOD/4R70w Ford automatic transmissions
- Compatible with 3 speed, NP435, AX15, NV3550.
- Compatible with the Dana 20 transfer case.
- Engineered to work with our #5350 & #5355 Radius Arms.
- Engineered to work with our Torque Tamer #5326
- Clears LCR SS20 or 23-gallon fuel tanks
FAQ
Q: What add-ons should I consider before purchasing this exhaust?
A: If you are purchasing the raw stainless finish headers. We highly suggest wrapping the headers in heatshield products lava wrap to keep the heat out of the engine bay and off the floorboards. We also highly recommend installing the premium header bolts (3082) and Remflex Gaskets (3050) for a trouble-free installation.
Q: Is this system compatible with SS Dominator Headers?
A: No Please see 3141.
Q: Is this system compatible with other manufactures headers?
A: No. It is only compatible with the Duff/Drake shorty header (3106)
Q: Is a lift required for the installation of this system?
A: No, this exhaust will work at factory height.
Q: Can I get this system with tail pipes exiting the rear?
A: No, tail pipes that exit the rear will allow exhaust fumes to enter the passenger compartment on Early Broncos.
Q: I want to buy ceramic or cerakote headers for my new engine will that be a problem?
A: If your new engine requires a break-in period when first fired up then you do NOTÂ want to install new ceramic or cerakote coated headers. use a pair of old manifolds or headers for break-in.
Q: How will I know if my new engine needs to be broken in?
A: If the new or rebuilt engine has a new flat tappet cam installed, it will need to be broke in. If the new or rebuilt engine has any roller cam it does NOT require a break-in
Check out our other FAQs here.
Compatibility
This system has been designed to fit the most popular v8 powertrain configurations for Early Broncos. 289/302, 351w, and Pushrod 5.0L EFI engines. It’s been tested with many automatic and manual transmission configurations such as the C4/AOD/4r70w and 3-speed Manual NV3550 & AX15.
This system is not compatible with zf-5 transmissions.Â
This system is not compatible with JBA headers.
This system is only compatible with the stock Dana 20 transfer case.
Our detailed instructions give you all the details on how to properly prepare for the installation. Check them out here.
*The regulation of emissions production, noise levels, and safety standards are undertaken by the federal government, each of the fifty state legislatures and by many local municipalities, towns, and counties. California Vehicle Code Sections 27156 and 38391 prohibit the advertising, offering for sale, or installation of any device which modifies a vehicle’s emission control system unless exempted. James Duff headers have not received an exemption from these code sections and are not legal for sale or use in California on vehicles originally equipped with catalytic converters. It is illegal, except for vehicles only driven off-road, to remove or otherwise render inoperative any emission control device on regulated motor vehicles. In the other 49 states, it- is the responsibility of the ultimate consumer to check federal and local laws to determine if JDI products are legal for use on their vehicle.
Instructions
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