Gibson GK428 engineThe Gibson GK428 engine is a 4.2-litre normally-aspirated DOHC V8 engine. It has been developed and produced by Gibson Technology for sports car racing since 2017.DevelopmentThe engine had been in development since August 2015, prior to being selected as the sole engine supplier for all of the new 2017 regulation LMP2 cars. It shares some architecture with the Zytek ZG348 engine, which previously powered multiple LMP2 cars. The engine has a target for the running costs of about $1,400 per hour, which was tested to last for 50 hours or on average. During the 2024 4 Hours of Mugello, the engine reached of running since it was introduced.Applications Dallara P217 Ligier JS P217 Oreca 07 Riley-Multimatic MkXXX