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Unfortunately, Probably No New 426 Hemi Coming for Street Use and Here's Why

Mar 16, 2018 - 1:01 PM - by MagnumClub
By Patrick Rall, LXForums Editorial Staff

Why There Probably ISN'T a New 426 Hemi Coming for Street Use

There is a rumor going around the internet that insists that FCA is working on a new, naturally-aspirated 426 Hemi V8. Some rumors insist that this engine will be offered in the Ram trucks, others point to the Challenger, but I don’t think that any of these reports are going to prove to be true – and it isn’t just because of emission regulations.

Let me start by saying that none of my insiders are currently aware of a project to develop a naturally aspirated, 426 cubic inch Hemi V8 for street use. Mind you, these insiders provided me with information on many vehicles including the Hellcat cars and the Demon in advance, yet they don’t have any info on a new 426 street engine. Because of that, I truly do not believe that we will see a return of the big-cube Hemi to the FCA production vehicle lineup, but insiders aside, there are a few reasons why I don’t think that we are likely to see a new 426 Hemi in the Ram 1500 or Challenger.

Comparable Engines
To get an idea of what kind of power levels we can expect from a modern 426 Hemi, let’s look at the biggest engine offered by Ma Mopar, the biggest modern Hemi and a comparable engine from General Motors. Of course, I am talking about the 8.4-liter Viper V10, the 392 SRT Hemi and the 7.0-liter LS7 engine from the C6 Chevrolet Corvette Z06.

When the Viper left production last year, it was powered by a naturally aspirated 8.4-liter (512 cubic inch) V10 that delivered 645 horsepower and 600 lb-ft of torque. That was the most powerful NA engine ever offered by a Chrysler Group brand while the most powerful modern Hemi is the 6.4-liter, 392 cubic inch SRT engine that produces 485 horsepower and 475 lb-ft of torque.

Of course, the rumored new 426 Hemi could feature new technology to make it more efficient than those engines, but it seems highly unlikely that the SRT team could develop a 7.0-liter, naturally aspirated Hemi to make more power than the 512-cubic inch Viper engine. Figure that with the 426 being about 9% larger than the 392, it is reasonable to expect that the company could get a similar engine volume-to-power ratio. The 392 makes about 1.24 horsepower per cubic inch, which would lead to a 426 engine with roughly 528 horsepower. Even if FCA could get the 426 engine to deliver 20% more power than the 392, it would only be making around 582 horsepower.

The C6 Chevrolet Corvette Z06 offered 505 horsepower and 470 lb-ft of torque from the naturally aspirated 7.0-liter LS7. FCA could most certainly cook up more power with a similarly-sized Hemi, but even if the new big-cube Hemi was 20% more powerful than the 7.0-liter LS7, it would only have about 606 horsepower.

Why Arent These Numbers Good Enough?
10 years ago, if someone told me that the SRT engine masterminds were working on a naturally aspirated 426 Hemi with 606 horsepower, I would have told you that it would be an awesome option for those looking to drive a big cube, big power Mopar muscle car. However, with the Hellcat cars delivering 707 horsepower and the Demon packing 840 horsepower, this naturally aspirated engine would fall well short of either of those two smaller supercharged V8s.

Imagine that the rumored 426 Hemi has 610 horsepower and 570 lb-ft of torque. It would not appeal to those prospective buyers looking for the most power, as the Hellcat engine offers considerably more and there are far more credible rumors that another Hellcat is on the way with more than 707 horsepower. The 426 Hemi would be designed for the buyer who is most concerned with nostalgia, wanting to drive a “modern 426 Hemi Challenger” than a Hellcat Challenger.

Now, some of you might be thinking that you would buy a 2020 Dodge Challenger SRT 426 if the price was right, but the odds are overwhelming that this engine would cost more than the Hellcat models by the time that you got out of the dealership.

Low Volume, High Cost
Many people assume that CAFÉ laws are the biggest obstacle preventing a modern naturally aspirated 426 Hemi and while they do play a small part, the 426 Hemi would be low enough volume that it wouldn’t have any real impact on Dodge’s CAFÉ scores. It would,... [Read More]
  2 Replies | 948 Views

How About a Jeep Trackhawk Demon?

Feb 01, 2018 - 12:55 PM - by MagnumClub
By Patrick Rall, LXForums Editorial Staff

How About a Jeep Trackhawk Demon?

The Dodge Challenger SRT Demon is an incredible machine with 840 horsepower and the ability to run mid-9s thanks to a host of high tech gadgets. In addition to all of that supercharged power, the key to the Demon’s stunning track times is the combination of the TransBrake and the Torque Reserve system. The problem for the Demon is traction, even with the factory-equipped Nitto drag radials and adding all-wheel-drive to the Challenger platform is too much of a packaging problem.

However, FCA already has a high performance AWD vehicle packing supercharged Hemi power, so we have to wonder if the Jeep Grand Cheorkee Trackhawk might not make for an incredible basis for some of the Demo technology. In fact, some of that technology is already in use with the 707-horsepower Jeep, so Trackhawk with more Demon influence could create yet another incredible Mopar performance vehicle.

What Makes the Demon Special
The 2018 Dodge Challenger SRT Demon benefits from a long list of unique features which help make it such an incredible performance car. Under the hood is a 6.2L Hemi fitted with a 2.7L supercharger and an innovative intercooler system that reroutes the cooled air from the air conditioning system to lower the compressed air entering the engine.

That power is sent through a unique 8-speed automatic transmission with an integrated TransBrake through a strengthened driveshaft, rear differential and half shafts to the Nitto drag radial tires.

The Demon also has a host of weight reduction efforts inside and out.

All of these features could easily be applied to the Charger or Challenger to create a stronger and quicker Hellcat model, but they would still suffer from the same traction issues as the Demon.

On the other hand, the AWD Jeep Grand Cherokee Trackhawk doesn’t suffer from those same traction problems.

Imagining a Jeep Demon
Say that we took a Jeep Grand Cherokee Trackhawk and added the Demon’s supercharger and cooling system, thus increasing the output from 707 to 840 horsepower. The Trackhawk already has the Torque Reserve system, but adding the Demon’s TransBrake would allow the blown SUV to come out of the hole much more quickly. Of course, it would need the stronger driveshaft, rear differential and half shafts to handle the extra power and the violence of the TransBrake launch, along with beefier AWD components, but a Jeep with 840 horsepower, a TransBrake and drag radials on all four corners would almost certainly be the quickest stock vehicle in America, if not the world.

Take that build a step further, removing weight throughout the vehicle and it seems like a Trackhawk with Demon-like performance isn’t out of the realm of possibility. Of course, we are just dreaming with this and there is no indication from FCA that a hotter Trackhawk is on the way, but the company has the parts and they have the ideal vehicle platform to make the most of those parts.

Let’s hope that Jeep sees the need for a higher performance Grand Cherokee, as one more 800+ horsepower machine would only secure Ma Mopar’s place as America’s leader in high performance.
  2 Replies | 2,944 Views

New Ram 1500 - lighter, stronger, smarter, powerfuller (yeah not a word)

Jan 19, 2018 - 1:54 PM - by MagnumClub
By now you've all seen the all new 2019 Ram 1500. This truck makes the new Chevy Silverado look dated in both looks and in technology. This new Ram is light, stronger, more powerful, more fuel efficient and smarter and better looking. I love this new truck. now talk to me when they release pricing but, for now, let a guy dream after all.

Interesting video from FCA engineers who designed the exterior of the new truck.

Video from the engineers regarding the material and chassis design

All-new 2019 Ram 1500 – No Compromise Truck, Leading in Durability, Technology and Efficiency

January 15, 2018 , Auburn Hills, Mich. - The all-new 2019 Ram 1500 becomes the benchmark for durability, technology, efficiency and convenience with features never before offered in a pickup.

Overall weight for the Ram 1500 has been reduced by 225 pounds. As the truck’s backbone, the frame uses advanced materials and engineering to eliminate 100 pounds while increasing stiffness and durability for 12,750 pounds of towing capability and 2,300 pounds of payload.

An all-new eTorque system delivers improved fuel efficiency in both V-6 and V-8 configurations.

As a segment disrupter, the new Uconnect 4C with a massive 12-inch touchscreen leads the pickup world with technology featuring split-screen capability, 360-degree camera views and exclusive content from SiriusXM with 360L.

Active safety and security systems join the technology onslaught with adaptive cruise control, forward collision warning, Blind-spot Monitoring and ready alert braking.

“The all-new 2019 Ram 1500 delivers a no-compromise approach to the full-size truck segment with strength, durability, technology and efficiency,” said Mike Manley, Head of Ram Brand. “The Ram 1500 offers truck buyers leading-edge innovation with 225 pounds of weight reduction, 12,750 pounds of towing capability, a stunning Uconnect 12-inch touchscreen display and active systems that improve fuel efficiency and assist drivers. The Ram 1500 stands out as the benchmark in a very competitive segment.”

Interactive 2019 Ram 1500 website.

  • Overall weight reductions totaling nearly 225 pounds net when compared to previous model
  • New frame features 98 percent high-strength steel to improve durability, weight and rigidity for improved handling
  • Strongest Ram 1500 ever with most efficient frame in the segment – 100 pounds lighter with 98 percent high-strength steel
  • Maximum payload increased to 2,300 pounds, and maximum trailer tow to 12,750 pounds
  • New Ram 1500 is the segment’s most aerodynamic pickup with .357 coefficient of drag and features exclusive active aerodynamics: grille shutters, air dam and air suspension
  • All-new Frequency Response Damping (FRD) shocks deliver the best combination of ride, handling and comfort in a pickup
  • Next generation, class-exclusive air suspension enhances fuel efficiency, improves ride, and gives greater off-road capability, load-leveling and entry/exit convenience
  • Largest front brakes in segment at 14.9 inches and new electric parking brake
  • New 4x4 Off-road Package includes suspension with one-inch lift, electronic locking rear axle, tuned shocks and Hill-descent Control

  • 2019 Ram 1500 delivers significant gains in fuel efficiency with eTorque mild hybrid system on second generation 3.6-liter Pentastar V-6 and legendary 5.7-liter HEMI® V-8 engines – widest use of mild hybrid technology in the segment
  • eTorque combines belt-drive motor generator unit with 48-volt battery pack to enable start/stop function, short-term torque assist and brake energy regeneration
  • ... [Read More]
  5 Replies | 3,554 Views

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