6.4 HEMI Long Block by MMX
Upgrade your engine performance with the 6.4 HEMI Long Block by MMX, built for enthusiasts who demand stronger power, improved reliability, and enhanced naturally aspirated performance. This complete long block assembly features an MMX Performance Camshaft and is designed for serious street, track, and performance applications.
The 6.4 HEMI Long Block provides a powerful foundation for drivers looking to upgrade their vehicle without starting from a basic factory engine platform. MMX Performance builds this NA long block with carefully selected components to improve horsepower potential, throttle response, and overall engine performance.
A professionally assembled long block saves time while providing the strength needed for advanced performance builds. The installed MMX camshaft helps optimize valve timing, allowing the engine to deliver improved power characteristics throughout the RPM range.
Product Specifications
| Feature | Details |
|---|---|
| Product Name | 6.4L HEMI MMX Performance Camshaft Installed NA Long Block |
| Brand | MMX Performance |
| Engine Compatibility | 6.4L HEMI V8 |
| Product Type | Naturally Aspirated Long Block Assembly |
| Camshaft | MMX Performance Camshaft Installed |
| Main Benefit | Increased Power & Performance |
| Application | Street Performance, Racing, Track Builds |
| Engine Configuration | Naturally Aspirated (NA) |
| Build Level | High Performance Engine Upgrade |
| Installation Type | Complete Long Block Assembly |
Key Features
- 6.4L HEMI performance engine platform
- MMX Performance camshaft installed
- Naturally aspirated performance setup
- Built for street and track applications
- Improves horsepower potential
- Provides stronger engine foundation
- Designed for performance enthusiasts
The MMX 6.4 HEMI Long Block gives builders a reliable solution for creating a high-performance engine combination. The installed camshaft improves engine breathing and performance characteristics while maintaining a strong foundation for additional upgrades.
Whether you are replacing a worn engine or building a dedicated performance vehicle, this long block provides the quality and performance needed for demanding applications.
Choose the 6.4 HEMI Long Block by MMX for a professionally built engine upgrade designed to deliver stronger performance, improved response, and dependable power.
Blake Harrington –
This was my first order from Dodge Auto Supply, and I purchased the 6.4L MMX camshaft-installed long block for my 2018 Charger build. The ordering process was smooth, and shipping updates were reliable. The engine arrived on a solid pallet with no issues. My shop installed it quickly, and startup was flawless. The camshaft gives the engine a noticeable lope and much stronger mid-range power. After tuning, the car feels completely different—faster, louder, and more aggressive. Very satisfied with this upgrade.
Rowan Ellison –
I ordered this cammed 6.4L long block for my Challenger project in Alberta, and Dodge Auto Supply exceeded expectations. The engine arrived safely packaged and well secured. My mechanic inspected it and confirmed the build quality was excellent. Installation went smoothly, and the engine started right away. The camshaft gives it a strong performance tone, and power delivery feels much improved. The car now feels more aggressive and responsive under acceleration. This was a perfect upgrade for my setup.
Kellan Whitaker –
I bought the MMX Performance Camshaft Installed 6.4 HEMI long block for my Scat Pack in Arizona, and I’m very impressed. The ordering process was easy, and shipping was quick for such a large engine. The pallet arrived intact, and the engine looked professionally built. My performance shop installed it, and everything fit perfectly. After startup, the cam profile gave the engine a deep, aggressive sound that I love. Once tuned, the car feels much faster and more responsive, especially in the mid-range. This is a serious upgrade for any 6.4 build.
Dalton Mercer –
I purchased the MMX camshaft-installed 6.4 HEMI long block for my Challenger build in Ontario, and Dodge Auto Supply delivered a great experience. The engine arrived well packaged on a reinforced pallet, and everything looked professionally assembled. My mechanic inspected the long block before installation and was impressed with the cleanliness and pre-installed cam setup. Installation went smoothly, and once the engine was started, it had a deep aggressive idle that immediately stood out. After tuning, the power delivery became much stronger across the entire RPM range. The car feels far more responsive and enjoyable to drive. This was a perfect upgrade for my build.
Mason Holloway –
I ordered this 6.4L MMX cammed long block for my 2020 Charger R/T upgrade project, and the experience was excellent. Dodge Auto Supply made ordering simple, and shipping updates were accurate throughout. The engine arrived in perfect condition and was very well protected. My shop installed it without any issues, and startup was instant. The camshaft gives the engine a strong, aggressive tone at idle, and performance feels significantly improved. Throttle response is sharp, and the car pulls harder than stock in every gear. This is exactly the level of performance I wanted.
Carter Ellington –
I ordered the 6.4L HEMI MMX Performance Camshaft Installed NA Long Block from Dodge Auto Supply for my 2019 Dodge Charger Scat Pack after my original engine developed lifter damage. The ordering process was straightforward, and the product details clearly explained what was included, which helped me feel confident before purchasing. Shipping was faster than expected, and the engine arrived securely strapped to a pallet with no damage. My performance shop inspected everything before installation and confirmed the build quality was excellent. Once installed, the engine fired up cleanly and immediately sounded stronger and more aggressive. The cam setup gave it a noticeable lope at idle, and throttle response improved right away. After break-in and tuning, the car feels completely transformed with stronger mid-range pull and much better top-end power. It drives smooth but aggressive, exactly how a performance build should feel. I’m very satisfied with the results and service.
Easton Caldwell –
I ordered the MMX cammed 6.4 HEMI long block for my Scat Pack rebuild, and Dodge Auto Supply delivered great service. The engine arrived securely packaged and looked top quality. My installer had no issues during the swap, and everything lined up perfectly. Once started, the engine sounded incredible with a deep cam lope. After tuning, performance improved dramatically, especially in mid and high RPMs. The car feels much more powerful and fun to drive. This was a great investment for my build.