Hennessey’s Ford Mustang Shelby GT350R HPE850 Sounds Demonic

The Ford Shelby Mustang GT350R’s 5.2-liter naturally-aspirated V8 is perhaps one of the most evocative engines ever fitted in an American car.

Thanks to its flat-plane crank and the pony car’s special exhaust system, it emits a spine-tingling rumble unlike any other Mustang before it. The engine doesn’t just sound good, it also churns out 526 hp and 429 lb-ft (581 Nm) of torque. It’s little wonder why the GT350R shot up in value the moment it was released.

However, as incredible as the car is, Hennessey Performance thought it could make it better and swiftly developed a ‘HPE850’ upgrade package for the pony car. Filmed during a recent round of testing at the tuner’s Texas headquarters, the finished product is absolutely demonic.

The devil has risen

As you would imagine, the presence of a supercharger changes how the vehicle sounds. The noises produced from the engine bay are no longer restricted to the devilish growl of the 5.2-liter V8 and now include the characteristic scream of a supercharger. If you like the sound of supercharged V8s, we can’t imagine any better than this.

As the name of the upgrade package suggests, it increases power in a huge way and during recent dyno test runs, Hennessey’s HPE850 GT350Rs have consistently put down up to 790 hp at the rear wheels. This added grunt means the car can reach 60 mph (96 km/h) in a rapid 3.3 seconds and allows for a quarter mile run of just 10.8 seconds at 133 mph (214 km/h).

If we were fortunate enough to own a GT350R, we’d probably leave it bone stock. However, if you own one and are yearning for a little more power, this is one solution to consider.


  • Netsphere

    sounds like any other american v8, nothing special

  • Marc Gruben

    Sounds insane! I seriously would love this powertrain in a droptop Mustang. Imagine redlining that engine in a convertible, top-down, driving through a tunnel.

  • TheAmerican2point0

    GT350 is my dream car. Saving up…

  • Mavis

    Home based job opportunities have become a trend in all over world now. A current survey demonstrates even more than 76% of people are being part of web-based job opportunities from home without having complications. Every person would like to spend more time with his/her mates by going to any beautiful place in the world. So online earning enables you to carry out the work at any time you want and enjoy your life. Still discovering the right method moreover setting up a proper aim is our milestone towards achieving success. Already plenty of people are getting such a solid revenue of $13000 weekly by applying recommended and successful techniques for making money on the internet. You will start to earn from the first day as soon as you check out our site. >>>>> SRESC.IO/u2Y

  • Wandering_Spirit

    Gorgeous. Soon to be seen cars and coffee all over the US, threatening trees, signage, oncoming cars and the occasional bystander. Velocicrashptor

  • GobbleUp

    Sounded lame.

  • Blade t

    I would keep the R stock..

  • Zandit75

    Poor hood fitment over the RH headlight. Is that a Ford issue, or Hennessey’s?

    • willhaven

      Noticed that too. I think it’s a Ford issue.

      • Allcarnews

        no it’s henesey

  • chuck2

    So, oil consumption is 1 qt every 350miles?…

    From CD long term test of gt350

    And then there’s the oil-consumption issue: Over 40,000 miles, we added 21.5 quarts of 5W-50. That’s in addition to scheduled oil changes. It’s the most we’ve ever added during a long-term test by a long shot. Ford released a supplement to the owner’s manual stating that the engine might consume a quart every 500 miles under severe use. “

$465k GEV Patagonia Is The Best Way To Travel The World On Four Wheels

The GEV Patagonia can use many different chassis configurations and is a small home on off-road wheels.

Watch The Mercedes-AMG GT 63 S Put Its 630 HP To Good Use

The issue with the range-topping GT 4-Door Coupe is not power, but finding a straight long enough to unleash it.

The Nissan Stelvio Zagato Looks Like It Came From Mars And Landed On Earth

This rare Nissan Stelvio Zagato has an asking price of almost $50,000.

2020 Corvette C8 Spied As NY Auto Show Debut Appears Unlikely

The 2020 Corvette was a no show in Detroit and it doesn’t appear GM has any major introductions planned for New Year.

How Does The BMW M2 Competition Perform Against Its M4 Sibling?

The BMW M2 Competition uses a de-tuned engine from the regular BMW M4.

Video Captures Father Pushing Daughter Out Of Way Of Oncoming Car

A quick thinking father saved his daughter from a hit and run driver.

First 2020 Toyota Supra Rolls Off Production Line, U.S. Deliveries Start This Summer

The first 2020 Toyota Supra is a one-off model that was auctioned for $2.1 million earlier this year.

New Ford Bronco To Have Removable Doors And Roof, 4-Door Model Also Coming

Ford’s upcoming Bronco will be an even closer Wrangler rival than previously thought.

Check Out Tesla’s Enhanced Summoning In Action With A Pair Of Model 3s

Tesla Enhanced Summon means you can control your Tesla with an app.

Ford F-150 Raptor To Get 700+ HP Shelby Mustang GT500 V8?

A GT500-powered Ford F-150 Raptor would rival the Hellcat-powered Ram Rebel TRX.