You know that rumble. That deep, throaty growl of a finely tuned V8. If you own a Dodge Charger or Challenger with the legendary 5.7-liter Hemi, that sound is music to your ears. You crave more of it. You want your Hemi to roar loud and proud, unleashing its full potential. It’s time to upgrade your exhaust and free your Hemi to scream at the world. Installing a set of long tube headers is the best way to unchain that beast under your hood and gain power that will pin you to your seat. Out with the old restrictive manifolds, in with a free-flowing header system. In just a few hours, you’ll transform your ride into a fire-breathing monster that unleashes an extra 30-50 horsepower. Unleash your 5.7 Hemi – it’s been waiting to be freed.
What Are Long Tube Headers for the 5.7 Hemi?
Long tube headers 5.7 hemi are specialty exhaust headers that provide performance and power gains for your 5.7 Hemi engine. Unlike stock exhaust manifolds that are restrictive and sap horsepower, long tube headers have individual tubes for each cylinder that are longer and less restrictive.
The longer, freer-flowing tubes on long tube headers help scavenge exhaust gasses from the cylinders more efficiently. This improves cylinder scavenging and “breathing”, allowing your Hemi to inhale a bigger gulp of air and fuel on each intake stroke. The end result is more power and torque, especially in the mid-range and higher RPMs.
To install long tube headers, you’ll need to remove your stock exhaust manifolds and cats. Then, bolt the long tube headers in place using the provided hardware and gaskets. You’ll also need to install high-flow catalytic converters and either weld on or clamp your existing exhaust system to the header collectors.
The install can be tricky since the long tubes need to clear engine and chassis components. You may need to drop the steering rack or K-member for the best fit. But the power gains, throaty exhaust note, and underhood “show” quality of long tube headers make the effort worthwhile for any gearhead.
Long tube headers are a great first step to unleashing your 5.7 Hemi and a perfect complement to cold air intakes, performance camshafts, and free-flowing exhaust systems. So, if you’re ready to uncork your Hemi, long tube headers should be at the top of your list. The power and soundtrack they provide will make every drive a thrill ride.
Benefits of Installing Long Tube Headers
Installing long tube headers on your 5.7 Hemi will unleash its true potential. Here are some of the main benefits you’ll gain:
Improved Performance. Long tube headers increase airflow and reduce backpressure, allowing your Hemi to inhale and exhale more efficiently. This results in more horsepower and torque. You can expect gains of 10-20hp, especially in the mid to upper RPM range.
Better Sound. Long tube headers change the tone of your Hemi to a deep, throaty rumble. The improved airflow and less restricted exhaust create an aggressive, muscular sound that will turn heads.
Increased Throttle Response. By reducing backpressure, your Hemi will feel more responsive when you hit the gas. There will be less lag time between stomping on the pedal and feeling the surge of acceleration.
Long tube headers do require some additional considerations. They can be more difficult to install and often require cutting the factory exhaust. They also may not be street legal in some areas due to noise regulations. However, for many Hemi owners, the performance benefits far outweigh these potential downsides.
If unleashing the beast within your 5.7 Hemi sounds appealing, long tube headers should be at the top of your mod list. When installed by a reputable performance shop, they’ll transform the way your Hemi runs, sounds and feels. The end result will be a muscle car that lives up to its legendary heritage. Go ahead – uncork that Hemi and let it roar!
what is def delete kit?
A DEF delete kit is a modification designed to bypass or disable the DEF system in a diesel-powered vehicle. The DEF system is a crucial component of modern diesel engines, as it helps reduce harmful emissions by injecting a urea-based fluid into the exhaust stream. This fluid reacts with the exhaust gases to convert harmful nitrogen oxides (NOx) into harmless nitrogen and water.
However, some vehicle owners seek to remove or bypass the DEF system for various reasons, such as to increase power and fuel efficiency, or to avoid the cost and hassle associated with purchasing and refilling DEF fluid. It’s important to note that tampering with emissions control systems, including the DEF system, may be illegal in many regions and can result in fines or penalties. Additionally, removing the DEF system can void warranties and may have negative environmental consequences. Always consult local laws and regulations before considering any modifications to emissions control systems.
Removing the DEF System With a Delete Kit
Removing your diesel exhaust fluid (DEF) system is one of the first mods many Hemi owners do. The DEF system reduces nitrogen oxide emissions from your exhaust but also reduces performance and fuel economy. Removing it with a delete kit is easy and will unleash the full potential of your 5.7L Hemi.
Get the Right Delete Kit
You’ll need an emissions delete kit specific to your Ram 1500 model year that includes DEF injector plugs, a tuner to disable the DEF system in the ECU, and exhaust clamps or a downpipe to replace the DEF injector section. Popular brands for Hemi delete kits include Mad Dog Muscle, Full Blown Diesel and Fleece Performance Engineering. Make sure any tuner comes pre-loaded with a tune to disable the DEF system.
Remove the DEF Injector
Start by loosening the clamps on either side of the DEF injector section under your truck. This is the section that sprays DEF into your exhaust. Remove the entire section. Install the downpipe from your delete kit in its place and tighten the clamps.
Plug the DEF Inlets
Locate the DEF filler inlet on your Ram 1500, typically near the fuel filler. Remove the cap and you’ll find a series of ports inside. Install rubber plugs from your delete kit into all ports to block DEF from entering the system. Do the same for any DEF tank drain ports.
Install the Tuner and Upload the Tune
Connect the tuner from your delete kit to your Ram’s OBD-II port, usually under the dash. Follow the directions to install any software on the tuner and upload the DEF disable tune to your ECU. This will reprogram your Ram’s computer to eliminate the DEF system.
With the DEF system removed and the tune uploaded, your Hemi will gain increased throttle response, torque and MPGs. However, be aware that removing emissions equipment is illegal for street use in many areas. Off-road and competition use only. Enjoy the unlocked potential of your 5.7L Hemi!
Top 5.7 Hemi Header Brands Compared
When it comes to headers for your 5.7 Hemi, you have several great brands to choose from. Here are the top 5 header brands for your 5.7 Hemi and how they compare:
Kooks is one of the premier header brands and makes high-quality long tube headers for the 5.7 Hemi. They offer headers in stainless steel and ceramic-coated options from 1 3/4” to 2” in diameter. Kooks headers are on the higher end of the price spectrum but are very well made and can provide up to 30 additional horsepower.
JBA makes high-performance headers for the 5.7 Hemi at a lower cost than Kooks. They offer long tube headers in stainless steel or ceramic-coated in 1 3/4” to 2” sizes. JBA headers can provide a boost of 20-25 horsepower for your 5.7 Hemi. For bang-for-your-buck, JBA headers are a great option.
PaceSetter makes affordable performance headers for the 5.7 Hemi. They offer long tube headers in coated steel, stainless steel and ceramic-coated stainless steel in 1 3/4” to 2” sizes. PaceSetter headers can provide 15-20 additional horsepower for a 5.7 Hemi. They are a good budget-friendly choice if you’re looking to unleash a few more ponies from your Hemi.
Dynatech makes high-quality stainless steel long tube headers for the 5.7 Hemi in 1 3/4” to 2” sizes. Dynatech headers can provide up to 25 additional horsepower for your 5.7 Hemi. They are precision-made and on the higher end of the price range. For maximum power and performance, Dynatech headers are an excellent option.
Hooker is a well-known brand that makes black-coated and stainless steel long tube headers for the 5.7 Hemi in 1 3/4” to 2” sizes. Hooker headers can provide up to 15-20 additional horsepower for your Hemi. They offer solid performance and quality at a mid-range price point.
In summary, you have several reputable brands to choose from to unleash more power from your 5.7 Hemi. Compare the horsepower gains, construction, sizing and pricing options to determine which set of long tube headers is the best match for your needs and budget. The right headers can transform your Hemi into an even more formidable beast.
Step-by-Step Guide to Installing Headers Yourself
Installing long tube headers on your 5.7L Hemi is a straightforward job for the mechanically inclined. Here’s a step-by-step guide to help you through the process.
Remove the stock manifolds
First, you’ll need to disconnect the battery to disable the power in the vehicle. Then, jack up the front end and place jack stands under the frame for support. Locate the stock exhaust manifolds—they’re the large cast iron pieces that direct the exhaust from the cylinder heads to the exhaust pipes. Unbolt the manifolds from the cylinder heads and exhaust pipes. You may need to use a breaker bar to loosen the bolts. Remove the manifolds from the engine bay.
Install the header flanges
The header flanges connect the long tube headers to the cylinder heads. Place a header flange over each cylinder head, lining up the bolt holes. Apply a bit of high-temperature thread sealant to the bolt threads, then hand-tighten the header flange bolts. Go back and tighten each bolt in a criss-cross pattern with a torque wrench to the specification in your header instructions, typically around 70 to 90 lb-ft.
Connect the headers
Now you can slide the long tube header pieces into place. Hand-tighten the header bolts to loosely connect each header to its flange. Install any mid-pipes or collectors at this time as well. Go back and tighten all header bolts in the same criss-cross pattern to the recommended torque spec, usually around 20 to 30 lb-ft.
Reconnect the exhaust
Reconnect your exhaust system from the long tube headers back. You may need to have the exhaust pipes cut and re-welded to the proper length and angle to mate up with your new headers. Start the engine and check for any leaks or strange noises before driving.
Installing long tube headers on a 5.7L Hemi can free up extra horsepower and give your engine a throatier sound. Take it slow for the first drive—your engine may feel more responsive, so be ready for the extra power! With some mechanical ability and patience, you’ll be enjoying the benefits of long tube headers in no time.
So there you have it, the basics for unleashing your 5.7 Hemi with a set of long tube headers. While the install isn’t exactly plug and play, with some mechanical skill, patience, and the right tools you can transform your Hemi’s exhaust and really open it up to breathe. Once installed, you’ll immediately notice the difference in sound and power as those headers help your Hemi reach its full potential. The roar of the open exhaust, the pull of the extra horsepower, it all adds up to an incredibly rewarding do-it-yourself project for any gearhead. Now get out to the garage, roll up your sleeves and make that 5.7 Hemi purr! You’ve got this.