GM4240601 Class 57 602 'Restormel Castle' First Great Western Blue Diesel LocomotiveThe Class 57 is a re engineered locomotive, rebuilt by Brush Traction, Loughborough, from redundant Class 47 locomotives. The locomotives are fitted with a refurbished EMD engine and a re conditioned alternator, improving reliability and performance. Three variants exist, one for freight (57 0) and two for passenger operations. Each cost 300,000, about one third that of a new build locomotive. The class has its origins in 1997 when Freightliner