Leo and Ian Geoghegan drove their Ford Cortina Mk.I GT500 in the 1965 Armstrong 500 at Bathurst while wearing business suits as part of a sponsorship deal with a Sydney clothing store.

Leo & Ian won the 1962 Bathurst Six Hour Classic at Mount Panorama driving a Daimler SP250 sports car, (that year the 500 mile race for touring cars were held at Phillip Island) Leo also finished 3rd outright in the 1973 Hardie-Ferodo 1000 (the year the race was extended from 500 miles to 1000 kilometres) co-driving with Colin Bond in a Holden Dealer Team LJ Torana GTR XU-1.

Ironically, the HDT was then run by Harry Firth while Leo's older brother Ian won the race co-driving with Allan Moffat in a Ford Works Team XA Falcon GT Hardtop.

During this time, Leo and big brother Ian were involved in testing a ute fitted with a 5.6 litre, 340ci V8 engine and with the R/T Charger's wheelbase at the Mallala circuit in South Australia.

The V8 Charger, which Chrysler Australia denied was to be used in Series Production racing, was eventually killed off in the Supercar scare in mid-1972 along with the V8 Holden Torana GTR XU-1 and the Ford Falcon GTHO Phase IV.

He was survived by his widow, Del; sister Marie-Louise; two sons, Steven and Shaun; and two daughters Roslyn Naomi; and cousin Warren Geoghegan.