Hennessey has been laying out packages left and right for a variety of models lately, including the Dodge Ram HPE500, Cadillac Escalade, and now, the lusciously tuned Nissan GT-R. There was no time wasted fiddling with the exterior of the GTR because Hennessey went straight to work pumping up the standard 3.8L V6 engine to produce up to 800 HP.

We haven’t seen this many additions under the hood of a vehicle since the last Hennessey tuned project we encountered, so we’re going to focus on some of the more important ones for now. The standard 3.8L V6 engine was jacked up with the help of SUMO turbo, intercooler piping, and intercooler core upgrades, as well as high-flow fuel injectors and chassis dyno tuning and engine calibration. Other additions include a SUMO stainless steel midpipe exhaust, SUMO stainless steel turbo downpipes, and a SUMO high-flow cold air induction. These modifications allow the GTR800 to pack an 813 HP punch and sprint the car from 0-60 mph in 2.6 seconds. The 0-100 mph sprint is made in 6.2 seconds and the quarter mile can be had for 10.5 seconds at a speed of 136 mph.

If that’s not enough for your average consumer, then Hennessey is equipped with several different options, including a transmission clutch pack upgrade, a SUMO electronic exhaust cutout (75 mm), a KW variant 3 adjustable coilover suspension upgrade, premium wheel and tire packages, and carbon fiber body kits and accessories. Oh, and they’ll also throw in Hennessey and GTR800 exterior badges and serial numbered dash and engine plaques for good measure.

Hit the jump for specifications on Hennessey’s Nissan GTR projects.

  • 2009 - 2011 Nissan GTR800 by Hennessey
  • Year:
    2009- 2011
  • Make:
  • Model:
  • Horsepower @ RPM:
  • 0-60 time:
    2.6 sec.
  • Quarter Mile time:
    10.5 sec.
  • 0-100 time:
    6.2 sec.
  • car segment:
  • body style:


2009 - 2011 Nissan GTR800 by Hennessey Drivetrain
- image 401197


  • 813 bhp @ 6,500 rpm


  • 0-60 mph: 2.6 sec. (stock = 3.4)
  • 0-100 mph: 6.2 sec. (stock = 8.3)
  • 1/4 mile: 10.5 sec. @ 136 mph (stock = 11.8 sec. @ 118 mph)

The GTR800 Upgrade Package Includes:

  • SUMO Stainless Steel Midpipe Exhaust
  • SUMO Turbo Upgrade
  • SUMO Intercooler Piping Upgrade
  • SUMO Intercooler Core Upgrade
  • SUMO Inlet Piping Upgrade with Blow-off Valves
  • SUMO Stainless Steel Turbo Downpipes
  • SUMO Wastegate Actuators
  • SUMO High-Flow Cold Air Induction
  • Modified Factory Mass Air Sensors
  • High-Flow Fuel Injectors
  • Chassis Dyno Tuning & Engine Calibration
  • All Necessary Gaskets & Fluids
  • Hennessey Premium Floormats
  • Serial Numbered Dash & Engine Plaques
  • Hennessey & GTR800 Exterior Badges
  • 1 Year / 12,000 Mile Limited Warranty
  • Clutch Pack & Transmission Cooler Upgrades Recommended

Optional Upgrades

  • Transmission Clutch Pack Upgrade
  • SUMO Electronic Exhaust Cutout (75 mm)
  • KW Variant 3 Adjustable Coilover Suspension Upgrade
  • Premium Wheel & Tire Packages
  • Carbon Fiber Body Kits & Accessories
  • And More
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Show Comments


  (458) posted on 10.10.2011

Thanks to the teaser I saw, I finally appreciate the concept and the variety and how it became a powerful wheel horsepower.

  (320) posted on 06.30.2011

What else to say? The detailing of this car is quiet impressive. I really love the design in the exterior however I’m kind of disappointed in the design of the interior, it looks like the Civic to me. And it seems that the Hennessey have made an awesome upgrade for this vehicle.

  (594) posted on 06.30.2011

Wow! I like the luxurious styling of this car. And its power output is impressive as well. BTW, this car seems faster in terms of 0-60 mph and I wonder if they are planning to removed the speed limiter!

  (466) posted on 05.12.2011

Good thing that everytime Hennessey brings out a tuning package, they make sure that it would really be a head turner. They have quite a nice package for the GT-R here.

  (368) posted on 05.11.2011

@kaideathman, Well as far as I know..there is a tuning more than 1000 hp but not in the Japan but rather on German automaker the Bugatti caliber but for other I haven’t heard about it.

  (433) posted on 05.9.2011

Yes! I have to agree on that one. The power of this car is so powerful but I think there’s nothing to be shocked since its GTR! I really love the job of aftermarket company. However, I just wonder why they can’t make a powerful engine on production?

  (613) posted on 05.9.2011

Wow! The performance of this car is unbelievable for a car that was powered with v6 technology. Its seems a great job for Hennessey to boost its powered up to 800 hp! BTW, the specification listed above is just enough to make everyone drool about this car.

  (52) posted on 05.7.2011

If not mistaken there is >1000hp tuning in Japan...

  (19) posted on 05.7.2011

wow its amazing that they got 813 horse power out of a V6!

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