US-based tuner Hennessey Performance has turned its attention to the McLaren 600LT, extracting more than 745kW from its turbocharged V8.

If you’ve seen the outcome of eCoty 2018, you’ll know that we don’t feel the 441kW 600LT needs much more power. However, Hennessey Performance thinks otherwise, as it has announced 521kW, 596kW and 745kW tuning packages for the already blisteringly fast McLaren 600LT, the most powerful of which it claims results in a 0-100km/h time of just 2.1secs.

Entry point to the tuned 600LT experience is the 521kW ‘HPE700’ package, which the tuner says delivers 528kW and 860Nm of torque, thanks to high-flow air filters, re-calibration of the factory Engine Control Unit and a custom Hennessey stainless steel exhaust system. According to Hennessey the car can accelerate from 0-100km/h in just 2.6secs and can cover the quarter mile in 10.5secs at 223km/h.

> McLaren 600LT review

Next up is the 602kW, 978Nm ‘HPE800’ package, which helps the 600LT eclipse the power output of the $1.5million+ Senna. Similar modifications to the HPE700 package can be found under the engine cover, but with the factory turbo and intercooler systems require ‘modification’ to bring it to the 600kW mark. 0-100km/h is cracked in a quoted 2.4secs, while the quarter mile is completed in 10.1secs at 230km/h.

The most powerful package, the 746kW, 1172Nm ‘HPE1000’ upgrade, takes the 600LT from 0-100km/h in a staggering 2.1secs and allows it to cover the quarter mile in just 9.6secs at 252km/h. As you might imagine, quite significant modification is required to get the car to this level. There’s an aftermarket ECU from Motec, Hennessey turbo headers, upgraded turbos, a high-flow wastegate system, reinforced gearbox, Hennessey stainless steel exhaust, a new intercooler system and, of course, the crucial HPE1000 badges. Unlike the other two packages, Hennessey doesn’t provide a warranty with the HPE1000 upgrade. Hmmm.

Whether or not such power is necessary in the McLaren 600LT, we’re not sure, but if you have one sitting in your garage and your goal is to cover the quarter mile in less time than a Bugatti Veyron, you now know where to go.