Introduction: Beyond the Factory 702 Horsepower

The Ram TRX arrived as a statement—a 702-horsepower factory super truck that could conquer dunes and drag strips alike. Its supercharged 6.2-liter HEMI V8 already set a benchmark among performance trucks. Yet for owners who crave more, the Magnuson TVS 2650 supercharger system unlocks a new tier: over 900 horsepower at the wheels with proper supporting modifications. This article breaks down the engineering behind the Magnuson TVS 2650, the real-world power gains documented on dynos, and what it takes to transform your TRX from a formidable off-roader into a pavement-dominating powerhouse.

Whether you’re building a street-driven daily driver or a dedicated high-performance machine, understanding the upgrade path from 702 HP to 900+ HP is essential. We’ll cover the technical details, installation realities, reliability considerations, and the overall value proposition of this widely respected supercharger system.

The Ram TRX’s 6.2L HEMI V8: A Foundation Ready for More

The TRX’s standard engine is a version of the Hellcat’s 6.2-liter HEMI V8, topped with a 2.4-liter IHI supercharger. That factory setup produces 702 horsepower at 6,100 rpm and 650 lb-ft of torque at 4,800 rpm. The engine features a forged steel crankshaft, high-strength connecting rods, and aluminum alloy pistons with oil squirters—components capable of handling more power with tuning.

However, the factory supercharger reaches its volumetric efficiency ceiling quickly when boost levels are increased. The 2.4-liter rotor pack simply cannot move enough air to support 900+ horsepower without spinning dangerously fast and generating excessive heat. That’s where the larger displacement Magnuson TVS 2650 comes in.

  • Engine displacement: 376 cubic inches (6.2L)
  • Factory supercharger capacity: 2.4 liters per revolution (IHI)
  • Factory compression ratio: 9.5:1
  • Redline: 6,200 rpm (stock)

The engine’s architecture is already performance-oriented, but to surpass 900 HP, the induction system must flow significantly more air while maintaining charge air temperature within safe limits.

Magnuson TVS 2650 – Engineering for Extreme Power

The Magnuson TVS 2650 is a positive-displacement supercharger that replaces the factory blower. Its key differentiator is the rotor design: a 2650 cubic centimeter displacement per revolution (hence the name “2650”) vs. the factory unit’s 2.4L/2400cc. This 10% increase in swept volume allows the supercharger to deliver higher boost at lower rotor speeds, reducing parasitic loss and heat generation.

TVS Rotor Technology

The TVS (Twin Vortices Series) rotor pack utilizes four high-helix, high-helix lobe configurations that create a continuous compression event. This design provides near-instantaneous boost response—a hallmark of positive-displacement blowers. Unlike centrifugal superchargers that build boost gradually with engine RPM, the TVS 2650 delivers maximum boost almost immediately off idle, making the TRX feel incredibly responsive in daily driving and off-road low-speed maneuvers.

Integrated Intercooling System

The Magnuson system includes a high-capacity air-to-water intercooler core integrated into the supercharger manifold. Coolant flows through a dedicated heat exchanger mounted at the front of the vehicle. This setup maintains charge air temperatures roughly 20-30°F above ambient even during extended pulls, whereas the factory intercooler can experience heat soak after repeated hard runs. Lower intake temperatures preserve cylinder head integrity and allow for more aggressive ignition timing.

  • Displacement: 2,650 cc/rev
  • Maximum boost: 12–15 psi (with calibration, depending on pulley size)
  • Intercooler core: Air-to-water, integrated
  • Heat exchanger: Front-mount, oversized compared to stock

Why Positive Displacement Suits the TRX

For a truck that may tow, crawl rocks, or accelerate from a standstill, a positive-displacement supercharger offers distinct advantages over centrifugal designs. Centrifugal blowers behave like a turbocharger—they provide minimal boost at low RPM and ramp up linearly. For a heavy vehicle like the TRX (nearly 6,400 pounds), that can feel laggy. The Magnuson TVS 2650 instead builds boost immediately, contributing to a massive torque wall from 2,500 rpm onward. This makes the truck feel effortlessly powerful in all driving conditions.

Measured Power Gains: Stock 702 to Over 900 Horsepower

Real-world dyno results confirm that a properly tuned TRX with the Magnuson TVS 2650, supporting fuel system upgrades, and a larger throttle body can surpass 900 wheel horsepower. On a chassis dyno, stock TRXs typically record 620–640 wheel horsepower (accounting for drivetrain losses). With the Magnuson system, a conservative calibration yields 820–850 wheel horsepower, while a more aggressive setup with 2.85-inch upper pulley, 9.5-inch lower pulley, and optional Methanol injection can push beyond 900 wheel horsepower—equating to over 1,000 horsepower at the flywheel.

Configuration Wheel Horsepower (approx.) Peak Boost
Stock TRX 620–640 whp ~10 psi
Magnuson TVS 2650 (93 octane) 820–850 whp 12 psi
+ Fuel system & E85 880–920 whp 14 psi
+ Methanol injection 920–950+ whp 15+ psi

One of the most impressive results comes from Hennessey Performance, which offers a 1,000-horsepower package based on the Magnuson supercharger. Independent dyno sessions posted on forums like Ram TRX Forum confirm that torque output jumps from the stock 650 lb-ft to nearly 900 lb-ft at the wheels when properly tuned.

Required Supporting Modifications

A supercharger swap alone cannot achieve these numbers. The stock fuel system—injectors, fuel pump, and lines—reaches capacity around 800 wheel horsepower. For 900+ wheel horsepower, you need:

  • High-flow fuel injectors: 1000cc or larger
  • Dual fuel pumps or upgraded inline pumps supporting E85 blends
  • Aftermarket throttle body: 103mm or larger for increased air intake
  • Cold-air intake system: To feed the supercharger without restriction
  • Custom ECU calibration: From a reputable tuner (e.g., Dusterhoff Tuning or Hemispheric Performance)
  • Upgraded heat exchanger: For sustained high-power runs

Without these supporting parts, the engine will run lean, detonate, and risk catastrophic failure. Responsible builders prioritize a comprehensive package over simply bolting on the blower.

Installation Considerations

Installing the Magnuson TVS 2650 is a serious undertaking. While the kit is designed to be a mostly bolt-in replacement for the factory supercharger, it requires removing the intake manifold, supercharger, and associated fuel rails. The job takes a skilled mechanic 10–16 hours. Key steps include:

  1. Disassembly: Remove factory intake, throttle body, supercharger, and intercooler.
  2. Thermal management: Apply thread locker and torque fasteners to Magnuson’s specifications.
  3. Coolant system: Refill and bleed the intercooler circuit.
  4. Fuel system upgrade: Install injectors and pumps before the supercharger goes on.
  5. Tuning: Flash the ECU with a custom calibration. The TRX’s ECM is locked, so you’ll need a supported programmer (HP Tuners is common) and an experienced tuner.

Many owners choose a specialized shop for this work. The cost of installation alone can range from $1,500 to $3,000 depending on location and shop rates. For DIY enthusiasts, Magnuson provides detailed installation manuals. Check the official Magnuson product page for the latest documentation.

Reliability and Drivability

A properly installed and tuned Magnuson TVS 2650 setup can be reliable for daily driving. The supercharger itself is known for durability—Magnuson uses high-quality seals and bearings. The primary concern is heat management. With 900+ horsepower, the intercooler system becomes stressed. Upgrading to a larger heat exchanger and adding a fan controller helps maintain consistent intake temperatures.

Drivability remains excellent. The TVS 2650 has a bypass valve that opens during light throttle, keeping the supercharger in a near-idle state. This means fuel economy in city driving is only marginally worse than stock (expect a drop of 1–2 mpg). On the highway, the bypass allows nearly zero boost at cruise, so the truck behaves like a stock TRX until you step into it.

For owners concerned about warranty, Magnuson offers their own warranty on the supercharger. However, the engine warranty from Ram will likely be voided if the dealer discovers the modification. Many owners accept this trade-off for the performance. Tuning is also critical—a bad calibration can destroy pistons or connecting rods in minutes. Use only tuners with proven TRX experience.

Cost vs. Value Analysis

The Magnuson TVS 2650 supercharger kit for the Ram TRX retails for approximately $7,000–$8,000 depending on options. Adding supporting fuel system components, throttle body, heat exchanger, and tuning software pushes the total to $10,000–$12,000 in parts. With installation, the complete package runs $13,000–$16,000.

Vs. alternatives like a Ripatuned / Tuning by Jannetty race kit or a Hellcat Demon crate engine swap, the Magnuson offers the best power-per-dollar for 900+ horsepower. The system also retains factory accessories like A/C and power steering without issue.

Resale value of a modified TRX varies. Some buyers pay a premium for documented builds, especially those with a forged engine and professional tuning. Others avoid modified trucks due to reliability concerns. If you plan to sell, it may be wise to keep the stock supercharger and re-install it before sale, or provide detailed records of the build and dyno sheets.

Conclusion: Unleashing the TRX’s True Potential

The Magnuson TVS 2650 supercharger system transforms the already formidable Ram TRX into a bonafide hyper-truck. With verified power gains exceeding 900 horsepower at the wheels, instant throttle response, and robust engineering, it’s the definitive upgrade for owners who want to push beyond the 702 HP limit. By combining the larger displacement supercharger with proper fuel delivery, tuning, and cooling, you gain a daily-drivable truck that can embarrass sports cars at the track while still crawling over boulders on the weekend.

Whether you choose to install it yourself or hire a professional, the key is respecting the supporting modifications required. Do it right, and the Magnuson-equipped TRX delivers an unmatched blend of power, torque, and utility. For more detailed build logs, consult the Ram TRX Forum or reach out to a trusted tuner. The journey from stock to 900+ horsepower is demanding, but the reward is a truck that truly redefines the boundaries of factory performance.