Long Tube Headers 57 Hemi Jeep Grand Cherokee: Boost Power

When you think about upgrading your Jeep Grand Cherokee, especially one with the powerful 5. 7L HEMI engine, performance parts often come to mind.

Among these, long tube headers stand out as a significant modification. They are designed to replace the restrictive factory exhaust manifolds and can offer a noticeable boost in horsepower and torque.

However, choosing the right long tube headers for your specific 5. 7L HEMI Jeep Grand Cherokee isn't always straightforward.

There are many options, each with its own set of features, benefits, and considerations. This guide will explore the world of long tube headers for your HEMI Jeep, helping you understand what they are, how they work, and what to look for when selecting a set.

We'll cover the various types available, materials, installation challenges, and the overall impact on your vehicle's performance and sound.

Understanding Long Tube Headers For Your 5.7l Hemi Jeep

Long tube headers are a performance exhaust component that replaces the stock exhaust manifolds on your engine. The primary goal of a header is to collect exhaust gases from each cylinder and merge them into a single pipe. Stock manifolds are often designed with emissions and cost in mind, leading to restrictive designs that hinder exhaust flow. Long tube headers, as the name suggests, have longer primary tubes that are typically equal in length. This design helps to scavenge exhaust gases more efficiently. Scavenging is a process where the exiting exhaust pulse from one cylinder helps to pull the exhaust gases from the next cylinder in the firing order, creating a smoother and faster flow of gases out of the engine.

The benefits of this improved flow are directly related to engine performance. By reducing backpressure and improving exhaust gas velocity, long tube headers allow the engine to “breathe” better. This results in:

Increased Horsepower and Torque: Especially noticeable in the mid-range and upper RPM bands, where the engine is working harder.
Improved Throttle Response: The engine feels more eager to accelerate.
Enhanced Exhaust Sound: Often a deeper, more aggressive tone.

However, it’s crucial to understand that installing long tube headers on a 5.7L HEMI Jeep Grand Cherokee is not a simple bolt-on modification. It often requires other supporting modifications, such as a performance tune to optimize the engine’s computer for the new exhaust flow. Without a proper tune, you might not see the full performance gains and could even encounter issues like check engine lights.

Key Features To Consider

When shopping for long tube headers, several key features will dictate their performance, durability, and compatibility with your 5. 7L HEMI Jeep Grand Cherokee.

Understanding these aspects will help you make an informed decision.

Material And Coating

The material and any coating applied to the headers play a significant role in their longevity and performance.

Mild Steel: This is the most common and cost-effective material. However, it is prone to rust and corrosion, especially in harsh weather conditions. Headers made of mild steel usually require a high-temperature coating (like ceramic or stainless steel coating) to protect them.
304 Stainless Steel: This is a premium material known for its excellent corrosion resistance and durability. Headers made from 304 stainless steel will last much longer and maintain their appearance better than coated mild steel. They are generally more expensive but offer a better long-term value.
321 Stainless Steel: This is an even higher-grade stainless steel, often used in high-performance or racing applications. It offers superior heat resistance and is less prone to cracking at extreme temperatures compared to 304 stainless steel.

Coatings are essential for mild steel headers. Ceramic coating is popular because it helps to insulate the exhaust gases, keeping them hotter and flowing faster. It also provides a protective barrier against corrosion. High-temp paint is another option, but it’s generally less durable than ceramic coating.

Tube Diameter And Length

The diameter of the primary tubes and their length are critical design elements.

Tube Diameter: For naturally aspirated 5.7L HEMI engines, a common primary tube diameter ranges from 1.75 inches to 1.875 inches. Larger diameters might be beneficial for heavily modified engines with forced induction (superchargers or turbos), but for a typical naturally aspirated setup, sticking to these sizes is usually optimal for maintaining exhaust velocity and scavenging. Too large a diameter can actually hurt low-end torque by slowing down exhaust gas velocity.
Tube Length: As mentioned, long tube headers feature longer, often equal-length primary tubes. This design promotes better scavenging. The length is carefully calculated by manufacturers to work with the specific engine’s displacement and RPM range.

Collector Size And Design

The collector is where the primary tubes merge into a single pipe. The size and design of the collector influence exhaust flow and sound.

Collector Size: Typically, for a 5.7L HEMI, collector sizes range from 2.5 inches to 3 inches. A larger collector can support higher horsepower levels but might slightly reduce exhaust velocity at lower RPMs.
Collector Design: Some headers use a ball-and-socket collector, which allows for some flex and can make installation easier. Others use a flange-style collector. The efficiency of the merge collector itself also plays a role; a well-designed merge collector minimizes turbulence and maximizes flow.

Fitment And Clearance

This is arguably one of the most critical aspects for a Jeep Grand Cherokee. Long tube headers are physically larger than stock manifolds and can present clearance issues with the chassis, transmission, and other underbody components.

Ground Clearance: Because the primary tubes are longer and often routed lower, headers can reduce ground clearance. This is a major concern for Jeep owners who might take their vehicles off-road.
Component Interference: Headers need to be designed specifically for the 5.7L HEMI Jeep Grand Cherokee application to ensure they don’t hit the frame, steering components, or exhaust tunnel.
O2 Sensor Bungs: Ensure the headers have the correct number and placement of oxygen sensor bungs to connect your factory O2 sensors or aftermarket wideband sensors. Some headers come with extra bungs for future upgrades.

Emissions Compliance

This is a significant consideration, especially for users in regions with strict emissions testing. Many long tube headers are not emissions legal for street use because they often eliminate or relocate the catalytic converters. You must research your local laws and regulations before purchasing and installing. Some manufacturers offer “catted” versions or headers designed to work with high-flow catalytic converters, but these can be more expensive and might still not meet all emissions standards.

Long Tube Headers 57 Hemi Jeep Grand Cherokee: Boost Power

Top Long Tube Header Options For The 5.7l Hemi Jeep Grand Cherokee

Choosing from the vast array of manufacturers can be daunting. Here are some of the most reputable brands and their offerings for the 5.

7L HEMI Jeep Grand Cherokee, focusing on specific features and potential benefits.

1. Kooks Headers

Kooks is a well-respected name in the performance exhaust industry, known for high-quality materials and excellent fitment. Their long tube headers for the 5.7L HEMI Jeep Grand Cherokee are often made from 304 stainless steel.

Features: Typically offer 1.75-inch or 1.875-inch primaries and 3-inch collectors. They are designed for optimal performance gains and a deep, aggressive exhaust note. Kooks often emphasizes their precise bends and collector designs for maximum flow.
Fitment: Generally known for good fitment, but as with any long tube header installation, minor adjustments might be needed. They usually include all necessary hardware and O2 sensor extensions.
Considerations: Premium pricing, but backed by excellent quality and durability.

2. Arh (american Racing Headers)

ARH is another top-tier manufacturer that focuses on high-performance headers with excellent craftsmanship. Their headers are typically made from 304 stainless steel.

Features: ARH headers are known for their scavenging properties and are designed to maximize power across the RPM range. They often feature equal-length primary tubes and well-engineered merge collectors. Available in various primary tube diameters and collector sizes.
Fitment: ARH is also praised for its fitment, often providing solutions for common clearance issues. They usually come with a complete installation kit.
Considerations: Higher cost, but considered by many to be among the best for performance and build quality.

3. Borla

Borla is a widely recognized brand for performance exhaust systems, including headers. They often use high-quality stainless steel in their construction.

Features: Borla headers are designed to provide a noticeable increase in horsepower and torque. They are engineered for a specific sound profile, often described as aggressive yet refined.
Fitment: Borla generally offers good fitment, ensuring a relatively straightforward installation process.
Considerations: While a premium product, they sometimes offer slightly more budget-friendly options compared to Kooks or ARH, without compromising significantly on quality.

4. Stainless Works

Stainless Works offers a range of performance exhaust components, including long tube headers for the HEMI. They prioritize high-quality stainless steel and meticulous manufacturing.

Features: These headers are designed for significant performance gains and improved exhaust note. They are known for their durable construction and excellent finish.
Fitment: Stainless Works headers are generally designed for precise fitment on the specific vehicle application.
Considerations: Positioned as a premium option, reflecting the quality of materials and manufacturing.

5. Obx Racing Sports

OBX offers a more budget-friendly alternative to the premium brands. Their headers are often made from stainless steel, though the specific grade might vary.

Features: Designed to offer performance improvements over stock manifolds at a lower price point. They aim to provide a good balance of performance and affordability.
Fitment: Fitment can sometimes be more variable with budget brands. While many users report good fitment, some may encounter minor issues requiring slight adjustments during installation.
Considerations: A good option for those on a tighter budget, but it’s essential to manage expectations regarding long-term durability and potentially more involved installation compared to premium brands.

6. Jba (jba Performance Exhaust)

JBA offers a range of performance exhaust parts, including headers designed for improved flow and power. They often use heavy-gauge steel and offer various finishes.

Features: JBA headers are typically designed to provide a good balance of performance gains and ease of installation. They often come with features like mandrel-bent tubing for smooth flow.
Fitment: JBA generally aims for good factory fitment, making them a popular choice for many Jeep owners.
Considerations: Often represents a good middle-ground in terms of price and performance, offering a reliable upgrade.

7. Speed Engineering

Speed Engineering is known for offering performance parts at competitive prices. Their long tube headers are often made from stainless steel.

Features: Designed to provide significant performance improvements, especially when paired with other modifications. They focus on delivering good value for money.
Fitment: While generally good, fitment might require more attention than premium brands. They often come with basic hardware, and some users might need to source additional parts for a perfect install.
Considerations: Excellent for those seeking maximum performance gains on a budget.

8. Bbk Performance

BBK is another brand that offers a range of performance exhaust components, including headers for HEMI engines. They often focus on providing noticeable power gains.

Features: BBK headers are engineered to improve exhaust flow and unlock more horsepower and torque from the 5.7L HEMI. They often feature thick flanges and quality welding.
Fitment: BBK generally aims for good fitment, though minor adjustments might occasionally be necessary.
Considerations: A solid option for performance enthusiasts looking for a reputable brand at a reasonable price point.

9. Dynatech

Dynatech is recognized for its high-quality exhaust systems, including headers. They often use premium materials and focus on performance engineering.

Features: Dynatech headers are designed for maximum exhaust flow and performance gains. They often feature large diameter tubing and efficient collector designs.
Fitment: Known for good fitment and ease of installation.
Considerations: A premium option that delivers excellent performance and durability.

10. Gibson Performance Exhaust

Gibson offers a variety of exhaust products, including headers, that aim to improve performance and sound. They often focus on easy installation and good value.

Features: Gibson headers are designed to bolt on easily and provide noticeable performance improvements. They often come with a polished finish or durable coating.
Fitment: Gibson generally designs their headers for straightforward installation with minimal modification.
Considerations: A good choice for owners looking for a reliable performance upgrade with a focus on ease of installation and a quality finish.

11. Corsa Performance

Corsa is renowned for its performance exhaust systems that are engineered for both sound and performance. Their headers are a part of this integrated approach.

Features: Corsa headers are designed to complement their exhaust systems, providing maximum flow and power gains. They are often made from high-grade stainless steel.
Fitment: Corsa typically offers excellent fitment and build quality.
Considerations: A premium brand that focuses on a complete performance package, often with a distinctive exhaust note.

12. Magnaflow

MagnaFlow is a well-known brand for performance exhaust systems, and their headers are designed to enhance engine breathing and power.

Features: MagnaFlow headers are engineered for improved exhaust flow, leading to noticeable gains in horsepower and torque. They often feature mandrel-bent tubing for smooth flow.
Fitment: MagnaFlow generally provides good fitment for easy installation.
Considerations: A reliable choice for performance enthusiasts looking for a blend of performance, sound, and quality from a reputable brand.

13. Flowmaster

Flowmaster is famous for its distinctive exhaust sounds, and their headers are designed to complement this. They offer performance improvements alongside their signature tone.

Features: Flowmaster headers are designed to optimize exhaust flow, contributing to increased horsepower and torque. They often focus on delivering a performance-oriented sound.
Fitment: Flowmaster generally aims for good fitment, making installation manageable.
Considerations: A good option if you’re looking to enhance both performance and the aggressive sound that Flowmaster is known for.