Best 5.7 Hemi Performance Upgrades Reviewed: Our Top 5 Picks
The 5.7 Hemi engine, a powerhouse renowned for its robust performance and unmistakable rumble, has been a favorite among truck and car enthusiasts for years. Whether you own a Dodge Ram, Charger, Challenger, Jeep Grand Cherokee, or Chrysler 300, unlocking its full potential can transform your driving experience. From boosting horsepower and torque to improving throttle response and fuel efficiency, the right performance upgrades can make a significant difference. Our guide delves into the best 5.7 Hemi performance upgrades, providing expert-tested recommendations to help you choose the ideal modifications for your vehicle. We’ll explore a range of options, from foundational engine components to direct bolt-on enhancements, ensuring your Hemi not only performs better but also stands the test of time.
Our Top 5 Best 5.7 Hemi Performance Upgrades Reviews – Expert Tested & Recommended
1. GELUOXI MDS 5.7 HEMI Engine Overhaul Rebuild Kit
For those looking to restore their 5.7 Hemi engine to its former glory or build a solid foundation for significant performance gains, the GELUOXI MDS Engine Overhaul Rebuild Kit stands out as our Best Choice. This comprehensive kit addresses critical components prone to wear in the 5.7L Hemi, particularly concerning the MDS (Multi-Displacement System) lifters, which are a common point of failure. It’s an ideal solution for vehicles experiencing high mileage, reduced performance, or signs of engine wear, providing a fresh start for your Hemi.
Key Features That Stand Out
- ✓ Comprehensive Overhaul: Includes camshaft, lifters, pistons, water pump, oil pump, engine valves, timing chain VVT gear kit, and complete head & valve gasket sets.
- ✓ MDS Specific Components: Directly addresses common MDS lifter issues, a frequent concern for 5.7L Hemi owners.
- ✓ Wide Vehicle Compatibility: Fits 2009-2015 Chrysler 300, Dodge Challenger, Charger, Durango, Ram 1500, and Jeep Grand Cherokee/Commander 5.7L V8 models.
- ✓ Standard Bore Diameter: Features a standard bore diameter of 99.50mm with specific ring heights (1.20mm x 1.20mm x 2.00mm).
- ✓ 12-Month Warranty: Provides peace of mind with a significant warranty period.
Why We Recommend It
We recommend the GELUOXI MDS Rebuild Kit because it provides a complete solution for rejuvenating a tired 5.7 Hemi. Unlike partial fixes, this kit offers everything needed to bring your engine back to optimal condition, or even stronger than before. It’s particularly valuable for addressing the notorious 5.7 Hemi lifter issues, which can lead to catastrophic engine damage if left unchecked. By replacing all these critical components, you’re not just repairing; you’re fundamentally upgrading the reliability and longevity of your engine, making it a crucial first step for any serious 5.7 Hemi performance build.
Performance Analysis
While an overhaul kit doesn’t inherently add horsepower directly, its impact on overall engine performance is profound. A rebuilt engine with new, precisely engineered components will exhibit restored compression, optimal oil pressure, and proper valvetrain operation. This foundational health is essential for realizing gains from subsequent modifications like superchargers or aggressive camshafts. Customers who undertake such a rebuild often report a noticeable return to factory power levels, smoother operation, and improved fuel efficiency due to the engine operating within its intended parameters. For a 5.7 Hemi engine that has seen better days, this kit is the ultimate performance restorer.
Best For
This kit is best for 5.7 Hemi owners whose engines are showing signs of significant wear, such as low compression, ticking lifters, excessive oil consumption, or general sluggishness. It’s also an excellent choice for enthusiasts planning a high-performance build, as it provides a fresh, strong foundation. If you’re tackling a major engine repair or looking to future-proof your Hemi for years to come, the GELUOXI overhaul kit is an invaluable investment.
Our Expert Opinion
From an expert perspective, addressing the core mechanical integrity of the engine is paramount before chasing horsepower figures with bolt-ons. This GELUOXI kit provides all the necessary components to do just that, offering a cost-effective way to refresh or rebuild your 5.7 Hemi. The inclusion of MDS-specific parts is a huge plus, as preventative maintenance or repair in this area is critical for Hemi longevity. Considering the complexity of such an undertaking, having a complete, warranted kit simplifies the process significantly, making it an undeniable best choice for deep engine restoration and performance potential.
2. GBTAD Upgraded 8x Ignition Coil Pack and 16x Iridium Spark Plug Kit
Ignition is fundamental to engine performance, and a strong, consistent spark is crucial for maximizing the output of your 5.7 Hemi. The GBTAD Upgraded Ignition Coil Pack and Iridium Spark Plug Kit is our Editor’s Choice for its ability to significantly enhance combustion efficiency, resolving common issues like misfires and poor fuel economy while delivering a noticeable performance boost. This all-in-one package provides everything you need to revitalize your Hemi’s ignition system.
Key Features That Stand Out
- ✓ Complete Kit: Includes 8 high-performance ignition coil packs and 16 premium iridium spark plugs.
- ✓ Wide Compatibility: Fits 2006-2019 Dodge Ram 1500/2500/3500 5.7L V8, Dodge Charger, Durango, Jeep Grand Cherokee WK 5.7L V8, and Chrysler 300 5.7L V8.
- ✓ Premium Quality Construction: Features aerospace engineering grade copper wires and high-density epoxy resin for superior conductivity, durability, and safety.
- ✓ Enhanced Performance: GBTAD claims an 18% performance boost, optimizing engine efficiency.
- ✓ Resolves Common Issues: Designed to fix ignition problems such as high fuel consumption, misfires, poor power, and illuminated check engine lights.
Why We Recommend It
This GBTAD kit is a highly recommended 5.7 Hemi performance upgrade because it tackles an often-overlooked aspect of engine health: ignition. Worn coils and plugs can severely degrade performance, even in a perfectly maintained engine. Customers rave about the immediate difference this kit makes, citing smoother engine operation, faster starts, and significantly stronger acceleration. The seamless collaboration between the enhanced coils and iridium plugs ensures optimal engine performance, making it an excellent choice for both maintenance and performance enhancement.
Performance Analysis
The core of this upgrade lies in improving the ignition system’s efficiency. With stronger, more consistent sparks, combustion in each cylinder is optimized, leading to a more complete burn of the air-fuel mixture. This translates directly into tangible performance benefits: reduced misfires and rough idling, which means power is delivered more smoothly and consistently. Users report a noticeable increase in horsepower and torque, along with improved throttle response. Additionally, the improved combustion efficiency can lead to better fuel economy, offering both performance and practical benefits. This is a crucial step for anyone experiencing degradation in their 5.7 Hemi’s driveability.
Best For
This ignition coil and spark plug kit is best for 5.7 Hemi owners who are experiencing common ignition-related problems such as misfires, rough idle, hesitation during acceleration, or a decline in fuel efficiency. It’s also an excellent proactive upgrade for vehicles approaching or exceeding 60,000-80,000 miles, as ignition components naturally degrade over time. If you want a noticeable and relatively affordable boost in your Hemi’s all-around performance and reliability, this is an outstanding choice.
Our Expert Opinion
As experts, we often emphasize the importance of a robust ignition system. The GBTAD kit, with its premium-grade components and reported 18% performance boost, stands out. Customer feedback strongly supports its effectiveness in eliminating common Hemi misfire issues and enhancing overall driving dynamics. The easy installation is an added bonus, making this an accessible and impactful 5.7 Hemi performance upgrade for a wide range of enthusiasts. It’s a foundational modification that yields immediate and noticeable results, securing its spot as our Editor’s Choice.
3. COMP Cams 8720-16 Hi-Tech .080″ Wall Pushrod Set
When considering serious valvetrain upgrades for your 5.7 Hemi, particularly if you’re installing an aftermarket performance camshaft, the pushrods are a critical, often overlooked component. The COMP Cams 8720-16 Hi-Tech .080″ Wall Pushrod Set is our Best Budget pick, offering a significant improvement in valvetrain stability and durability without breaking the bank. Designed for 2003-2008 Dodge 5.7L Hemi engines, these pushrods are built to withstand the increased stress of higher lift and more aggressive cam profiles.
Key Features That Stand Out
- ✓ Enhanced Wall Thickness: Features a robust 0.080″ wall thickness, significantly stronger than stock pushrods.
- ✓ Precision Formed Ends: Equipped with reinforced 5/16″ ball ends for precise fitment and improved load distribution.
- ✓ Heat-Treated Construction: Ensures superior strength and wear resistance under extreme engine conditions.
- ✓ Drop-In Performance Upgrade: Designed for easy installation in ’03-’08 Dodge 5.7L HEMI engines, especially beneficial with performance camshafts.
- ✓ Trusted Brand: Manufactured by COMP Cams, a leader in valvetrain technology, ensuring quality and engineering excellence.
Why We Recommend It
We recommend the COMP Cams Hi-Tech Pushrod Set because it provides crucial valvetrain stability for modified 5.7 Hemi engines. Stock pushrods can flex or bend under the increased spring pressure and aggressive lobe ramps of a performance camshaft, leading to lost valve lift, inaccurate timing, and potential engine damage. These heavy-duty pushrods eliminate that flex, ensuring that every degree of camshaft lift is transferred effectively to the valves. This is an essential, yet affordable, upgrade for any serious 5.7 Hemi cam swap or engine rebuild.
Performance Analysis
While pushrods themselves don’t directly add horsepower, their contribution to consistent and reliable engine performance is invaluable. By preventing deflection, these pushrods ensure that your camshaft’s intended lift and duration are accurately delivered, which is paramount for maximizing airflow and ultimately, power. In engines with performance camshafts, the stability provided by these pushrods translates to higher RPM capability, reduced valvetrain noise, and consistent power delivery throughout the rev range. This allows other modifications, like improved cylinder heads or intake manifolds, to perform at their peak, making it a foundational piece for any 5.7 Hemi horsepower upgrade.
Best For
This pushrod set is best for 5.7 Hemi owners who are upgrading their camshaft to a more aggressive profile, performing a full engine rebuild, or simply seeking to enhance the durability and stability of their valvetrain. It’s particularly suited for 2003-2008 Hemi engines where stronger valvetrain components are vital for reliability and optimal performance, especially when pushing the engine harder than stock.
Our Expert Opinion
The COMP Cams 8720-16 pushrod set is a prime example of an essential, yet often overlooked, performance upgrade for the 5.7 Hemi. Its robust construction and heat-treated design make it ideal for supporting higher spring pressures and aggressive cam profiles without concerns of pushrod flex. Given its affordability and the critical role it plays in valvetrain integrity, this set offers incredible value for money, justifying its place as our Best Budget pick for those committed to serious Hemi performance.
4. Readair Ignition Coils Pack Set of 8
A well-maintained ignition system is fundamental for optimal engine performance, especially in a powerful engine like the 5.7 Hemi. The Readair Ignition Coils Pack Set of 8 offers a direct, high-quality replacement solution for failing coils, aiming to restore and even enhance your Hemi’s ignition efficiency. This set is designed to tackle common issues associated with aging ignition components, ensuring your engine runs smoothly and powerfully.
Key Features That Stand Out
- ✓ Complete Set: Includes 8 ignition coil packs for a full replacement.
- ✓ Extensive Compatibility: Compatible with a wide range of Chrysler, Jeep, Dodge, and Ram vehicles with 5.7L V8 Hemi engines from 2006-2019, including some 6.1L, 6.2L, and 6.4L models.
- ✓ High-Efficiency Coil Design: Produces maximum high voltage output across all speeds, ensuring excellent pulse strength and durability.
- ✓ Advanced Insulation: Utilizes high insulation epoxy vacuum technology to reduce energy penetration failure and prolong service life.
- ✓ Meets OE Standards: Undergoes stringent quality control tests to meet or exceed original equipment specifications for reliable performance.
Why We Recommend It
We recommend the Readair Ignition Coils because they provide a cost-effective and reliable solution for common ignition problems in 5.7 Hemi engines. Customers frequently praise this set for its ability to fix misfires and improve engine smoothness. When your car has traveled over 80,000km and experiences hard starting, excessive cranking, lack of power, or increased fuel consumption, replacing worn ignition coils can significantly rejuvenate performance. These coils aim to make your car feel like new, a critical aspect of Hemi performance maintenance.
Performance Analysis
A healthy ignition system is crucial for optimal combustion, directly influencing your Hemi’s performance. These Readair coils are engineered to deliver a powerful and consistent spark, leading to more efficient fuel burning. This translates into several performance benefits: improved throttle response, smoother acceleration, and a noticeable reduction in misfires and rough idling. The reinforced frame and advanced epoxy technology reduce voltage flicker, ensuring consistent output and enhancing both short-term performance and long-term durability. For anyone looking to restore peak power and efficiency, especially in an aging Hemi, this is a very effective upgrade.
Best For
This ignition coil pack set is best for 5.7 Hemi owners who are experiencing noticeable signs of ignition failure, such as engine misfires, rough idling, hesitation under acceleration, or a check engine light related to ignition coils. It’s also an excellent proactive maintenance item for high-mileage vehicles to prevent future issues and maintain peak 5.7 Hemi performance and fuel efficiency.
Our Expert Opinion
The Readair Ignition Coils offer a compelling blend of quality and value. With widespread compatibility and positive customer feedback regarding ease of installation and effectiveness in resolving misfires, they are a solid choice for maintaining or restoring your 5.7 Hemi’s ignition system. While not a dramatic horsepower adder on its own, a properly functioning ignition is the bedrock of all other performance modifications. For anyone seeking a reliable, high-quality replacement for their Hemi’s coils, this set delivers noticeable improvements in driveability and engine health.
5. BBK Performance 1781 85mm Throttle Body – High Flow Power Plus Series
One of the most popular and effective bolt-on 5.7 Hemi performance upgrades is a larger throttle body. The BBK Performance 1781 85mm Throttle Body is designed to significantly improve airflow into your engine, resulting in an immediate boost in throttle response and horsepower. This “Power Plus Series” throttle body from BBK is an American-designed and built product, known for its quality and direct-fit application across various Hemi platforms, including the 5.7L and 6.1L.
Key Features That Stand Out
- ✓ 85mm High-Flow Design: Larger diameter than stock for increased airflow, available also in 90mm.
- ✓ Direct Bolt-On Replacement: Engineered for easy installation with simple hand tools in less than half an hour, including new electronics.
- ✓ Broad Hemi Compatibility: Fits 5.7L and 6.1L Hemi engines in Dodge Ram, Jeep, Chrysler 300, Dodge Magnum/Charger, and Challenger R/T and SRT8 models.
- ✓ Horsepower Gains: Advertised to add 12-15 horsepower without sacrificing mileage or drivability.
- ✓ Premium Construction: Made from brand new CNC machined 356 aluminum housings with highest quality components and factory OEM electronic throttle controls.
Why We Recommend It
The BBK 85mm Throttle Body is a fantastic 5.7 Hemi mod due to its straightforward installation and immediate, tangible performance benefits. Many customers describe it as one of the “best basic things” for improved performance, noting the immediate throttle response improvement. It’s a functional bolt-on that perfectly complements other intake modifications like a cold air intake (CAI), enhancing their effectiveness. It’s an accessible way to gain noticeable power and improve the driving feel of your Hemi.
Performance Analysis
Increasing the diameter of the throttle body allows a greater volume of air to enter the engine, especially at wide-open throttle. This increased airflow translates directly into more horsepower and torque. Users consistently report a sharper, more responsive throttle pedal feel, making the vehicle feel livelier and more eager to accelerate. While individual results may vary, the claimed 12-15 horsepower gain is a significant improvement for a single bolt-on part. Some users even observe a slight improvement in highway fuel economy (around 1mpg), making it a well-rounded 5.7 Hemi upgrade. However, some negative reviews note potential idle issues or P0507 MIL codes, indicating that careful installation and potentially recalibration or tuning might be necessary for some vehicles.
Best For
This throttle body is best for 5.7 Hemi owners seeking a noticeable increase in throttle response and a modest, but real, horsepower bump. It’s an excellent choice for those who appreciate instant gratification from a bolt-on mod. It pairs exceptionally well with other intake modifications like a cold air intake and can be a stepping stone to further tuning. It’s particularly appealing for drivers looking to enhance the everyday driving dynamics of their Hemi-powered car or truck.
Our Expert Opinion
The BBK 85mm Throttle Body is a classic 5.7 Hemi performance upgrade. The principle of increasing airflow for more power is sound, and BBK executes it with a quality, direct-fit product. While the majority of customers experience excellent results, it’s important to acknowledge the minority reporting idle issues. This suggests that while it’s a “simple bolt-on,” attention to detail during installation and proper throttle position recalibration (as instructed) are crucial. For those willing to ensure proper setup, this throttle body offers a compelling enhancement to the Hemi’s performance characteristics and is a worthwhile addition to almost any mod list.
Complete Buying Guide for Best 5.7 Hemi Performance Upgrades
Choosing the best 5.7 Hemi performance upgrades can be an exciting yet daunting task, given the multitude of options available. To make an informed decision, it’s essential to understand your goals, your budget, and the specific needs of your vehicle. This buying guide will walk you through the key factors to consider, helping you unlock the true potential of your Hemi engine.
Essential Factors We Consider
When evaluating 5.7 Hemi performance upgrades, several critical factors come into play. First, consider your primary objective. Are you chasing maximum horsepower for the track, or do you want improved throttle response and fuel economy for daily driving? Second, the current condition and mileage of your Hemi engine are paramount. A high-mileage engine might benefit more from a comprehensive rebuild kit to restore baseline performance and address common issues like MDS lifter failure, before adding power-adders. Newer engines might jump straight to bolt-on modifications. Third, think about compatibility. Always double-check that any upgrade is specifically designed for your vehicle’s make, model, and year, paying close attention to engine sub-variations (e.g., specific Hemi generations, MDS/non-MDS). Finally, research the brand reputation and warranty. Reputable manufacturers often provide better engineering, quality control, and customer support, ensuring your investment is protected. We prioritize products that offer a balance of performance gains, reliability, and value for money, providing comprehensive solutions for your 5.7 Hemi mods.
Budget Planning
5.7 Hemi performance upgrades can range from a few hundred dollars for bolt-on parts to several thousand for internal engine work or forced induction systems. Establishing a clear budget from the outset is crucial. Start with the most impactful and foundational upgrades that address any existing engine weaknesses. For example, if your Hemi is experiencing misfires or rough idling, prioritizing an upgraded ignition coil and spark plug kit will yield immediate and noticeable improvements for a relatively low cost. If you’re planning a full cam swap or forced induction, budgeting for supporting modifications like upgraded pushrods, stronger valvetrain components, or even an engine rebuild kit becomes essential. Remember to also factor in installation costs if you’re not doing the work yourself, and potential tuning costs for more significant modifications. Smart budget planning ensures you get the most bang for your buck without overextending financially, making your journey to enhanced Hemi performance both satisfying and sustainable.
Final Thoughts
The world of 5.7 Hemi performance upgrades is vast and exciting, offering numerous paths to enhance your vehicle’s power, responsiveness, and overall driving enjoyment. By carefully considering your goals, evaluating your engine’s condition, planning your budget, and selecting high-quality, compatible parts from reputable brands, you can transform your Hemi into an even more formidable machine. Whether you opt for a comprehensive overhaul to build a solid foundation, an ignition upgrade for smoother power delivery, or a high-flow throttle body for instant response, each modification contributes to a more exhilarating driving experience. Always perform thorough research, and when in doubt, consult with experienced mechanics or performance shops to ensure safe and effective installation of your chosen Hemi mods.
Frequently Asked Questions
Q: What are the best bang-for-your-buck 5.7 Hemi performance upgrades?
A: For significant improvements without breaking the bank, consider upgrading your ignition system (coils and spark plugs) for smoother operation and better fuel economy. A high-flow cold air intake and a larger throttle body are excellent bolt-on modifications that provide noticeable gains in horsepower and throttle response. A performance exhaust system can also free up some power and enhance the Hemi’s iconic sound. These modifications are relatively easy to install and offer great value.
Q: How much horsepower can a 5.7 Hemi gain with basic bolt-ons?
A: With a combination of popular bolt-on 5.7 Hemi performance upgrades like a cold air intake, performance exhaust, and an upgraded throttle body, you can typically expect gains of 25-40 horsepower. Adding a performance tuner can further optimize these modifications and potentially unlock even more power, often pushing into the 50+ horsepower range, depending on the base engine and quality of parts.
Q: Do I need to tune my 5.7 Hemi after installing performance upgrades?
A: For minor bolt-ons like a cold air intake or cat-back exhaust, tuning may not be strictly necessary but can still enhance performance. However, for more significant 5.7 Hemi mods such as a larger throttle body, performance camshaft, headers, or forced induction, a custom tune is absolutely critical. Tuning ensures that the engine’s air-fuel mixture, ignition timing, and other parameters are optimized for the new components, maximizing power, preventing engine damage, and ensuring smooth operation.
Q: What are the common issues with the 5.7 Hemi that affect performance?
A: The 5.7 Hemi is generally robust, but common issues include MDS (Multi-Displacement System) lifter failure, which can cause ticking noises and engine damage if neglected. Worn spark plugs and ignition coils can lead to misfires, reduced power, and poor fuel economy. Additionally, carbon buildup on valves and in the intake manifold can degrade performance over time. Addressing these issues with appropriate maintenance or overhaul kits is crucial for baseline performance.
Q: Can I install these 5.7 Hemi performance upgrades myself?
A: Many basic 5.7 Hemi performance upgrades, such as cold air intakes, exhaust systems, ignition coil and spark plug kits, and throttle bodies, are designed for relatively straightforward installation by individuals with moderate mechanical skills and common tools. However, more complex modifications like camshaft swaps or engine rebuilds typically require specialized tools, expertise, and a deeper understanding of engine mechanics. Always refer to the product’s installation instructions and consider professional installation for challenging procedures.
Embarking on the journey of 5.7 Hemi performance upgrades can be incredibly rewarding, transforming your driving experience with enhanced power, responsiveness, and that unmistakable Hemi roar. By selecting the right components and understanding their impact, you’re not just modifying an engine; you’re unleashing its true potential. Remember, every upgrade contributes to a more exhilarating ride, so choose wisely and enjoy the power!
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