The McLaren P1 LM, a road-legal version of the track-focused 986bhp P1 GTR, has been shown the Goodwood Festival of Speed.
The car has been converted by British marque specialist Lanzante, which is renowned for its work on customer McLaren F1s and F1 GTRs. The P1 LM is claimed to be the quickest, rarest and last of the P1 variants. Just five production models will be made in total, with customer deliveries expected in January 2017.
Video: McLaren P1 LM smashes Goodwood road car record
Lanzante says the biggest change from the P1 GTR is in the engine hardware, which now produces additional boost and hybrid power to keep the full 986bhp from the P1 GTR. It also gets gold-plated heat shielding in the engine bay, and the charge coolers have been tweaked to be more efficient at higher temperatures.
The P1 LM is 60kg lighter than the P1 GTR thanks to a number of weight-saving measures. The exhaust headers and catalytic convertor pipes are made from Inconel, saving 4.5kg, and race parts like the air jack system have been removed and lightweight seats from the F1 GTR are used.
Other alterations include fully exposed carbonfibre for the roof and additional panels, as well as improved aerodynamics from a modified rear wing, a front splitter and dive planes that, Lanzante claims, increase downforce over the P1 GTR by 40%.
Inside, the car gets exposed carbonfibre for the dashboard, instrument cowl, seat backs, roof, centre console and even floor mats. Air-con comes as standard.
Just one grey experimental prototype has been produced so far. In total, four production models will be orange and one will be grey.
McLaren test driver Kenny Bräck drove the car up the hill this weekend. He will also drive it around the Nürburgring to tweak the final set-up of the production versions.
Lanzante decided to undertake the conversion work following demand from customers who have bought the track-only version of the P1 GTR from the factory.
More than 40 £1.98 million P1 GTRs were sold, with the cars being offered to existing P1 road car owners only. The track car has a kerb weight of 1440kg, giving it around 685bhp per tonne.
Neither the McLaren factory nor its MSO division has been directly involved but McLaren is believed to have given the project its blessing. “I wouldn’t do anything to damage our relationship with McLaren, which we’ve built up over 20 years through our work on the F1,” said Lanzante boss Dean Lanzante.
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