G-Power Unleashes 789 HP From Mercedes-AMG GT R’s 4.0L Biturbo V8

As Mercedes-AMG’s second standalone model after the SLS, the GT is a tremendous sports car, particularly in range-topping R guise.

With 585 PS (577 hp) and 700 Nm (516 lb-ft) of torque produced by a twin-turbocharged 4.0-liter V8 engine, the Mercedes-AMG GT R is probably the closest thing to a German muscle car. Few people would feel the need for a faster machine — after all, the GT R goes from 0 to 100 km/h (62 mph) in 3.6 seconds and has a top speed of 318 km/h (198 mph).

Also read: Mercedes Details 2020 AMG GT R Pro Along With Updated Range

Still, the folks from G-Power wanted to extract even more performance from the AMG GT R. The aftermarket specialist offers four different options for increasing the V8’s peak output, culminating in an 800 PS (789 hp) variant that also comes with a maximum torque figure of 850 Nm (627 lb-ft).

The extra oomph is achieved via a combination of the Performance Software V4 and several hardware modifications to the M178 motor. Those include a racing fuel pump, weight-optimized forged pistons with reduced compression, modified turbochargers with larger turbine and compressor wheels, as well as CNC-optimized housings and enhanced compressor turbine blades. The intake system with sports air filters and downpipes with sports catalytic converters are also new.

To cope with the additional 215 PS and 150 Nm (111 lb-ft) of torque, G-Power engineers have also reinforced the seven-speed dual-clutch automatic transmission.

If a 789 hp output sounds too extreme, G-Power also offers the Performance Software V3 combined with the same hardware modifications for a total of 750 PS (740 hp) and 800 Nm (590 lb-ft) of torque.

Further down the ladder is the Performance Software V2 which takes the 4.0-liter V8 power plant to 690 PS (681 hp) and 770 Nm (568 lb-ft) of torque in combination with flow optimized downpipes. Finally, the entry-level Performance Software V1 comes with a still satisfactory 650 PS (641 hp) and 750 Nm (553 lb-ft) of torque.

Each of the aforementioned power kits can be had with Hurricane RR forged aluminum rims shod with 275/30 ZR20 Michelin tires at the front and 305/25 ZR21 rubber at the rear.


more photos...
  • Ken Lyns

    Is the brand pronounced “Ghey Power” in German?

Ferrari Admits Developing Its First-Ever SUV Is Quite A Challenge

The Purosangue SUV will be based on Ferrari’s scalable front-mid-engined architecture that can accommodate V6, V8 and V12s as well as rear- and all-wheel drive.

Frankfurt Motor Show Could Be Restructured In Order To Remain Sustainable

A lot of automakers, including Toyota, FCA, and Ferrari, were absent from this year’s event, and those present reduced their investments.

Aston Martin Unveils Vantage Cup For One-Make Racing Series

The Cup is based on the street-legal Vantage V8, with the championship set to start in Europe next year and expand to Asia in 2021.

The Mercedes-AMG One Sounds Just Like An Actual F1 Racer!

The Mercedes-AMG One’s powertrain consists of a 1.6-liter turbo V6 coupled to no less than four (!) electric motors.

Someone Created A Tesla Model 3 Low-Rider Because Why Not?

A low-rider electric sedan ain’t something you see on a daily basis, but with the proliferation of EVs, maybe we should get start getting used to it.

Ford Is Reportedly Developing A Focus-Based Ute In Australia

Code-named the P758, it is expected to target the South American market, though it could be sold elsewhere as well.

Hyundai’s Pickup Could Get A Ranger Raptor-Rivaling Variant

A Hyundai pickup with the i30 N’s 2.0-liter turbo four-cylinder and close to 300 HP could be very fun indeed.

This Chevy Camaro Has Turned To The Dark Side, Sith Lords Don’t Approve

Underneath this badly executed body kit, which comes bundled with all sorts of unusual add-ons, lies a sixth-gen Camaro.

V8-Powered Ford Fusion With 450 HP And RWD Is The Closest Thing To A Mustang Sedan

Not content with the stock 325 HP twin-turbo V6, the owner of this saloon fitted a tuned Coyote engine and a 2007 ‘Stang GT500 transmission.

Kevin Hart’s Plymouth Barracuda Crash Investigated By Californian Authorities

The California Highway Patrol may recommend modified cars like Hart’s are fitted with five-point safety harnesses.