Hennessey Performance is making a 1,000 horsepower upgrade for the McLaren 600LT.
Why did Hennessey decide to start upgrading McLarens? Probably because he likes them. He purchased a 600LT of his very own not too long ago, and has gone on the record with Top Gear saying that “the only thing that it’s asking for is more power.”
We’re not sure why 592 hp is not enough power. One can only assume that when your name is John Hennessey, anything less than four figures of horses is simply not enough.
So McLaren got his engineers under the hood of the 600LT to do what they do best: give an already great car more power than it can possibly ever deal with.
Starting at the bottom we have the HPE700 upgrade. As is always the case with Hennessey naming convention, the number represents the upgraded power--in this case, 700 horsepower (it’s actually 708 hp, according to their website). Zero to sixty is done in just 2.6 seconds (compared to the stock versions 2.9 seconds) with a quarter-mile time of just 10.5 seconds.
Getting those extra horses involves new high-flow air filters, an ECU re-calibration, and a stainless steel exhaust upgrade. Nothing is done to the suspension or steering, so expect the handling to be a little bit… different.
Next, we have the HPE800 upgrade. Power is now 805 hp and 722 lb-ft of torque, with a zero to sixty time of just 2.4 seconds and a quarter-mile time of 10.1 seconds. All the same upgrades as the HPE700 apply, but now Hennessey upgrades the factory intercooler and twin turbochargers.
Finally, we arrive at the big kahuna. The HPE1000 600LT gets 1,001 hp and 865 lb-ft of torque. Zero to sixty is done in just 2.1 seconds with a quarter-mile time of 9.6 seconds. Again, all HPE700 upgrades apply with the addition of transmission upgrades, a high-flow wastegate, new turbo headers, and a brand new Motec ECU.
Pricing hasn’t been announced, but you can bet it’ll be above the $240,000 entry price of the 600LT.