The Alan Mann Racing Lightweights: Origins of a $12.3m Ford GT40

30/01/2026 Media Enquiries: Rob Borrett | +44 (0) 7436 207851

News

The Alan Mann Lightweight story sits at the very heart of Ford’s GT40 success. At a critical point in the programme, Alan Mann Racing set the engineering standard, demonstrating how advanced lightweight construction and chassis development could underpin a factory-backed assault on Le Mans. That thinking fed directly into the world famous 1966 Ford GT40 Mk2 Factory Lightweight going racing, forming a vital bridge between concept and competition. Today, the significance of that collaboration has been underlined by the sale of one of the Factory Lightweights for $12,375,000, making it the second most expensive Ford ever sold at auction and bringing renewed focus to one of the most important—and lesser understood—chapters in GT40 history.

Alan Mann Racing’s Lightweight programme occupies a distinct and often misunderstood place within Ford’s GT40 history. The Alan Mann Lightweights and the world famous 1966 Ford GT40 MkII Factory Lightweight were very different cars. The original Alan Mann Lightweights were conceived as highly advanced, small-block GT40s, built around thin-gauge aluminium bodywork and extensive suspension and chassis development. They were not factory MkII cars, but a separate engineering direction developed in close collaboration with Ford during a period of rapid technical exploration. For the 1966 season, Ford asked Shelby American, Holman-Moody and Alan Mann Racing to work in parallel on the GT40 programme in pursuit of Le Mans victory.

As Ford’s ambitions for Le Mans intensified, the programme pivoted decisively from the Mk1 to the all-new MkII. The Alan Mann Lightweight sat directly in between. Five lightweight aluminium chassis were commissioned, with two completed as Alan Mann Lightweight GT40’s; AMGT-1 and AMGT-2; these cars were raced earlier in the season, including at the Sebring 12 Hours, the last three AMGT-3, AMGT-4 and AMGT-5 were never completed and remain in the Alan Mann Racing archives.

The remaining three aluminium body structures formed the basis for the next phase. When the decision was taken that Le Mans 1966 would be contested with the 7.0-litre MkII, Alan Mann Racing adapted the remaining lightweight body structures to meet Ford’s new specification—retaining the lightweight philosophy while fundamentally re-engineering the structures to accommodate the larger drivetrain. These cars did not start life as standard MkIIs; they evolved into them.

Those three re-engineered chassis became XGT-1, XGT-2 and XGT-3, built by Alan Mann Racing personnel as part of Ford’s factory effort. Constructed by Alan Mann staff within Shelby American’s Los Angeles facility. They reflected a true collaboration between Ford and one of its most technically capable partners. XGT-1 and XGT-2 were raced by Alan Mann Racing at Le Mans in 1966, while XGT-3 did not compete and has more recently been sold at Mecum Auctions. At scrutineering, the Alan Mann cars were the lightest MkIIs in the field—clear evidence of how Alan Mann Racing’s lightweight thinking directly influenced Ford’s ultimate GT40 campaign.

That recent sale of XGT-3 for $12,375,000, and becoming the second most expensive Ford ever sold at auction, has brought renewed recognition to the importance of the two original Alan Mann Lightweights and their enduring legacy within Ford’s racing history with the partially completed Alan Mann Lightweight programme which paved the way to GT40 success.