Hellcat Swaps

The Ultimate Mopar Power Plant

Hellcat swaps represent the pinnacle of modern V8 performance. With 707 horsepower in base form, 797hp in Redeye trim, or 1,025hp in Demon configuration, these supercharged 6.2L Hemi engines deliver power that was unthinkable in production cars just a decade ago. But that kind of performance doesn't just bolt into your classic Charger or '70 Cuda – it requires serious expertise, extensive supporting modifications, and a realistic budget.

At MPR Garage, we specialize in the complex builds that separate professional shops from weekend warriors. Hellcat swaps aren't for everyone, and we won't pretend they are. These are premium builds for customers who understand that world-class performance requires world-class execution.

Why Hellcat Swaps Are Different

This Isn't An LS Swap With More Power

Hellcat engines are massive, heavy, and incredibly complex. Between the supercharger system, advanced electronics, dual fuel pumps, high-capacity cooling requirements, and integrated chassis controls, these swaps demand expertise at every level. The engine alone weighs 550+ pounds, the supercharger needs its own cooling system, and the factory PCM wants to talk to modules that don't exist in your 1969 Charger.

Real Budget Reality

Let's be direct: quality Hellcat swaps start around $40,000 and can easily exceed $75,000-100,000+ for show-quality builds with all the supporting modifications done properly. If someone quoted you $15k for a "complete Hellcat swap," run. That number doesn't even cover the engine, transmission, and basic electronics, let alone the fabrication, cooling, fuel system, exhaust, tuning, and everything else required to make 700+ horsepower reliable.

Supporting System Requirements

The engine is just the beginning. Hellcat swaps require:

• Fuel System Upgrades - Dual high-pressure pumps, upgraded lines, surge tanks
• Cooling Systems - Massive radiators, dual electric fans, supercharger heat exchanger
• Electronics Integration - PCM tuning, wiring harness modification, CAN bus solutions
• Transmission - 8HP70/90 automatics or TR6060 manuals that can handle the torque
• Exhaust - Custom fabrication for supercharger clearance and proper flow
• Chassis Mods - Brakes, suspension, driveline upgrades to handle the power

We don't cut corners on any of this. Every system gets the attention it deserves.

Hellcat Variants We Work With

Standard Hellcat (707hp)

The "entry level" option – still an absurd amount of power for most applications. 2.4L supercharger, excellent reliability when properly supported.

Hellcat Redeye (797hp)

Upgraded 2.7L supercharger, higher boost, stronger internals. The sweet spot for serious street builds.

Demon (840hp-1,025hp)

The unicorn. Purpose-built drag racing engine with every internal upgrade Mopar could throw at it. Extremely rare and expensive, but ultimate bragging rights.

We'll help you source the right variant for your goals and budget – and be honest about whether the extra cost of Redeye or Demon makes sense for your application.

Common Hellcat Swap Applications

Classic Mopar Muscle

'68-'70 Chargers, '70-'74 Challengers, '70-'71 Cuda/Barracudas – the dream builds. These require extensive fabrication but deliver jaw-dropping results.

Modern Mopar Platforms

Swapping newer Hellcat power into earlier LX chassis (300C, Charger, Challenger) or updating older Hemi cars to supercharged power.

Trucks & SUVs

Ram trucks, Durangos, and even Jeeps – because 700hp in a 4x4 makes perfect sense to the right customer.

Custom Applications

Hot rods, pro-touring builds, and "why not" projects. If it fits and you've got the budget, we'll make it happen.

The MPR Garage Difference

We Actually Complete These Builds

Walk into most shops and you'll see that Hellcat project that's been "almost done" for two years. We don't take on builds we can't finish. We plan thoroughly, order everything needed upfront, and execute methodically. You'll get a realistic timeline and we'll hit it.

Transparent Pricing From Day One

We'll quote the complete job – not just the easy parts. No "oh, we also need to upgrade your fuel system for another $8k" surprises when you're already $30k deep. We know what these builds cost because we've done them before.

Proper Documentation

Every Hellcat swap gets complete documentation: wiring diagrams, parts lists, tuning files, maintenance schedules. If something needs service in five years, you'll have everything needed to maintain it properly.

Dyno Tuning & Road Testing

We don't just bolt parts together and hope. Every build gets proper dyno tuning and extensive road testing before delivery. You're paying for 700+ horsepower – we make sure you actually get it.

Who This Is For

Hellcat swaps are for customers who:

• Understand that proper execution costs real money
• Want the absolute pinnacle of Mopar performance
• Value quality work over cheap solutions
• Are willing to wait for it to be done right
• Want a shop that can handle the entire project, not just the mechanical work

Who This Isn't For

We'll be direct: if you're price-shopping between multiple shops for the lowest bid, we're not your shop. Hellcat swaps done properly cost what they cost. We're not interested in competing with shops that will cut corners or leave out critical systems to hit a lower number.

Ready to Build Something Legendary?

Hellcat swaps are statement builds. They say you're serious about performance, you appreciate Mopar engineering, and you're willing to invest in doing things properly. If that describes your project, let's talk.

We'll walk you through exactly what's involved, what it'll realistically cost, and what timeline looks like. No sales pitch, no sugar-coating – just honest information from people who build these engines for a living.