The F5000 run within the Aurora race series organised by the historic Sports Club. There are two at 5000 glasses for cars built before and after 1972 at 5000 was introduced in the early 1970s and it was Envisaged as a cost effective alternative to Formula One and soon proved faster in a straight line but slower around the bends. Aside thousands usually featured Chevrolet engines produced 450 to 500 brake horse power depending on specifications. Most use the DG300 hewland gearbox. The cars waiting around 650