Editing Ford GT40 (section)

=== Mk II ===
[[File:Ford GT40 (rear).jpg|thumb|left|GT40 Mk II rear]]
The Mk I design was altered separately by both Holman Moody and Shelby American to handle the much larger highly modified {{cvt|427|cuin|l|1}} "big block" [[Ford FE engine]] side oiler from the Ford's large family car called [[Ford Galaxie]], used in NASCAR at the time and modified for road course use. Referred to retroactively as the ''Ford Mk II'', the car had a new Kar Kraft-built four-speed gearbox (KKL-108 also called a Ford box) in place of the overpowered ZF five-speed (which had already belatedly replaced the over-stressed Colleti in the Mk I)<ref>{{Cite web|url=https://www.zf.com/mobile/en/stories_25280.html|title=Ford v Ferrari and the Era of the Ford GT 40 - ZF}}</ref> used in the Mk I.

In 1966, the three teams racing the Mk II ([[Chris Amon]] and [[Bruce McLaren]], [[Denny Hulme]] and [[Ken Miles]], and [[Dick Hutcherson]] and [[Ronnie Bucknum]]) dominated Le Mans,<ref>{{cite web| url = https://database.motorsportmagazine.com/database/races/1966-le-mans-24-hours| url-status = dead| archive-url = https://web.archive.org/web/20200126092240/https://database.motorsportmagazine.com/database/races/1966-le-mans-24-hours| archive-date = 26 January 2020| title = 1966 Le Mans 24 Hours {{!}} Motor Sport Magazine Database}}</ref> taking European audiences by surprise and beating Ferrari to finish 1-2-3 in the standings. The Ford GT40 went on to win the race for the next three years.

For 1967, the Mk IIs were upgraded to "B" spec, with re-designed bodywork and twin Holley carburettors (giving an additional {{Convert|11|kW|hp PS|abbr=}}). The new bodywork removed two top vents, which were for cooling rear brakes and added a spare wheel at the rear end. A batch of improperly heat-treated input shafts in the transaxles side-lined virtually every Ford in the race at the 24 Hours of Daytona, however, and Ferrari won 1–2–3. The Mk IIBs were also used for Sebring and Le Mans that year and won the Reims 12 Hours in France. For the Daytona, two Mk II models (chassis 1016 and 1047) had their bodies and engines re-badged as [[Mercury (automobile)|Mercury]] vehicles and engines<ref>{{cite web |last1=Peek |first1=Jeff |title=Costume change: Ford's little-known Mercury GT40s |url=https://www.hagerty.com/media/automotive-history/fords-little-known-mercury-gt40s/ |website=Hagerty Media |date=4 October 2018 |publisher=Hagerty |access-date=24 June 2024}}</ref> to promote that division of the Ford Motor Company.<ref>{{Cite book|last1=Li|first1=Naiyi|last2=Chen|first2=Xiaoming|last3=Hubbert|first3=Tim|last4=Berkmortel|first4=Richard|title=SAE Technical Paper Series |date=2005-04-11|chapter=2005 Ford GT Magnesium Instrument Panel Cross Car Beam|volume=1 |chapter-url=https://www.sae.org/publications/technical-papers/content/2005-01-0341/|language=en|location=Warrendale, PA|doi=10.4271/2005-01-0341 }}</ref>

In 2018, a Mk II that was 3rd overall at the 1966 Le Mans 24 Hours was sold by [[RM Sotheby's]] for $9,795,000 (£7,624,344) - the highest price paid at that time for a GT40 at auction.<ref>{{Cite web|url=https://www.theclassicvaluer.com/cars/ford/gt40|title=Price Guide: Ford GT40 [UPDATED 2025]|website=The Classic Valuer}}</ref>