Watch – ride on-board the Porsche 935 K3 at Laguna Seca

This video shows just how much of a handful the 935 K3, which won the 1979 Le Mans 24 Hours, can be

Porsche has released unedited on-board footage of American racing driver Leh Keen lapping Leguna Seca in a 935 K3 racer. The model, which was a racing version of the 930 911 Turbo road car, first raced back in 1979 - this K3 was built in the following year. Filmed here at the 2015 Rennsport Reunion classic event, it was the fastest of its class during qualifying, and this on-board footage reveals just how much work went into stringing that pole lap together.

Leh appears to have adopted the traditional rear-engined 911 driving style, which is to fight corner entry understeer and sharp power oversteer by sawing away at the 935’s three-spoke steering wheel, all to the silky soundtrack of its turbocharged flat-six engine. The unit produces in excess of 700bhp, and sends power to the rear wheels through a four-speed manual gearbox. As demonstrated by Leh, it works best with heavy-footed heal-and-toeing. 

This 935 K3 is a third-generation evolution model developed by German racing team Kremer. Though Porsche had updated the 935 with factory 935 Evolutions, it initially hesitated to offer them to privateer racing teams, leaving them disadvantaged. Kremer therefore decide to develop its own updates for the 935. The K1, short for Kremer Type 1, debuted in 1976, before being succeeded by the K2, K3 and K4. 

The K3 proved to be the most successful model, winning the 1979 Le Mans 24 Hours, beating its GT competitors (including factory run 935s, like the one pictured above) and the entire prototype class in a race shrouded by heavy rain. It was the first time a racing car based on a production model had won the race outright this side of World War II, a feat that only the McLaren F1 has managed since. 

In all of its guises, the Porsche 935 was a dominant force between 1976 and 1982, and it probably would have gone on win in subsequent years had the FIA not introduced new GT class regulations ahead of the 1983 season. Like the one in the video above, several 935s still compete around the world in classic racing championships and events.

For those of you after more 935 on-boards, here's footage of Leh Keen proving that this K3 is far more than just a one-lap machine.

Recommended

Porsche 911 Classic Club Coupe commission revealed
Porsche 911 Classic Club Coupe – front quarter
Porsche 911 coupe

Porsche 911 Classic Club Coupe commission revealed

This bespoke 996 commission has been designed for the Porsche Club of America in celebration of the classic ‘90s 911
23 Mar 2022
Porsche 911 Safari mule spied – latest sighting reveals new rear wing
Porsche 911 Safari
Porsche 911 coupe

Porsche 911 Safari mule spied – latest sighting reveals new rear wing

Tall ride height and wheelarch extensions suggest a surprise 911 derivative is in the pipeline, and we've spotted it testing
25 Jan 2022

Most Popular

Porsche 911 Sally Carrera Special Edition revealed
Porsche Sally Carrera – front quarter
News

Porsche 911 Sally Carrera Special Edition revealed

Porsche’s been collaborating with Pixar on this one-off special that’ll be sold at Car Week for charity
12 Aug 2022
Best Impreza Colin McRae Edition review – homage to McRae's championship 555 racer
Subaru Impreza Turbo 555 – header
Videos

Best Impreza Colin McRae Edition review – homage to McRae's championship 555 racer

We drive an original Group A Subaru Impreza 555 rally car, as well as the £370,000 contemporary homage Best Engineering has created in its image
12 Aug 2022
231mph Ultima GTR640 on the Isle of Man – evo Retro
Ultima GTR640
Features

231mph Ultima GTR640 on the Isle of Man – evo Retro

The Ultima GTR640 is one of the fastest accelerating road cars ever built. John Barker channels his inner racer and unleashes it on the Isle of Man TT…
11 Aug 2022