Kammala jumla mai zuwa: Ron Tauranac ne ya tsara, BT24 ya dogara ne akan motar BT23 Formula Two kuma yana da haske da karami. Tauranac ya ci gaba da bin tsarin sararin samaniya, shi kadai daga cikin masu zane-zane na Formula One. An tsara BT24 don ɗaukar sabon injin Repco 740 V-8, wanda shine sabon ƙirar da Repco ya gina gaba ɗaya, ba kamar na shekarun da suka gabata na Oldsmobile da ke da injunan 620 ba. Tauranac ya nemi Repco ya gina injin tare da in-vee fitarwa don rage yankin gaba da sauƙaƙa matsalar matsalar bututun fitarwa ta hanyar haɗin dakatarwa na baya. Kamar Lotus 49, BT24 ya fara bayyana a lokacin horo ga
Dutch Grand Prix, kuma idan aka kwatanta da Brabham ya zama kusan tsoho, amma yayin da kakar ta ci gaba, ingantaccen amincinsa ya sanya shi kunkuru ga zomo na Lotus. Brabham ya yanke shawarar yin amfani da motocinsa na 1966 da aka gwada a tseren Dutch (duk da cewa a wannan lokacin Jack Brabham's BT19 an sanye shi da injin 740 na tsakiya) kuma BT24 ya fara tseren tserensa a tseren Belgian Grand Prix.