 Nyorai kupfuurira kweiyi ndima - Allen akacheka mazino ake paSpringfield Speedway isingachawaniki. Akatanga mumotokari dzeStock ndokufambira mberi nokukurumidza. Nenguva isipi akava mutyairi wemakwikwi epamusoro-soro, achikunda mukwikwidzi wemotokari yemotokari yeMissouri-Illinois. Akatanga mujaho muUSAC Championship Car Series, mujaho muna 1961 kuburikidza 1963 mwaka pamwe 15 kutanga, kusanganisira 1962 uye 1963 Indianapolis 500mijaho. Akapedza ari pamusoro gumi matanhatu nguva, nezvakanakisisa kupedza kwake 5th muna 1962 pana Syracuse. 