About the Ford GT40:
The British built Mk I did not have any Le Mans sucsess, not until Carrol Shelby handed over the GT40-project to Holman-Moody in LA CA USA. Holman-Moody, who worked with Ford`s nascar & Can-AM rascecars totally rebuilt & reinforced the chassie to handle a detuned version of Fords nascar-engine, the famous FE427R sideoiler.
This +650hp raceengine was detuned to about 550hp and fit into the GT40. Wherever you look upon the web you`ll find "485hp" as the max power, but that`s a misunderstanding. Ford decided to be wery careful and instructed their drivers to low-shift at 6200rpm to keep the engines alive through the long 24 hours race. (The engine was down on 485hp at 6200rpm) But this defensive tactic led to Ferrari taking the lead so Fords driver Ken Miles decided to skip the tactic and let the 7-litre rev up to it`s nascar shiftpoints at 7400rpm. From there, the rest is history.