named his cars Repco Brabhams, the result of a sponsorship deal between Brabham and Repco. This name was applied regardless of the engine used, and the arrangement existed through to the end of the 1960s. The agreement saw Repco's international marketing of its automotive parts and service equipment supported by Brabham's racing achievements. Repco-Holden Formula 5000 engine Repco also developed and built the Repco-Holden Formula 5000 engine for Formula 5000 racing. Repco used the block and head castings of the Holden 308 V8 engine as its basis, but it featured many modifications including Lucas fuel injection, dual-coil Bosch ignition and more than 150 special components designed by Repco. The engine first tasted success in the 1970 Australian Grand Prix that was won by Frank Matich driving a Repco-Holden powered McLaren M10B. The engine was then used extensively in racing vehicles including cars competing in the Tasman Series, the Australian Drivers' Championship, the Australian Sports Car Championship and the Australian Sports Sedan Championship. By 1976, power for the 5.0 L Repco-Holden V8 was rated at approximately . This compared to approximately for the other main engine in the Australian Formula 5000 and Sports Sedans categories, the 5.0 L Chevrolet V8. Due to the success of the Repco-Holden V8, Holden enlisted Repco to carry out the development work (on the dyno only, according to Holden Dealer Team boss Harry Firth) on Holden's 308 engine for its Holden Torana SL/R 5000 that was released in 1974. Firth believed that developing the engine on the dyno and not on the race track saw continual problems for the engine such as oil surge - especially in touring car racing. He also claimed to have already cured the oil problems while developing the still-born Holden LJ Torana GTR XU-1 V8 in 1972 and that Holden ignored his warnings about the Repco engine. The list of Repco-Holden's Formula 5000 engine race, championship and series wins includes: Australian Grand Prix 1970 - Frank Matich, McLaren M10B 1971 - Frank Matich, Matich A50 1976 - John Goss, Matich A53 Australian Drivers' Championship 1972 - Frank Matich, Matich A50 1973 - John McCormack, Elfin MR5 1975 - John McCormack, Elfin MR6 New Zealand Grand Prix 1973 - John McCormack, Elfin MR5 1974 - John McCormack, Elfin MR5 Australian Sports Car Championship 1975 - Garrie Cooper, Elfin MS7 Australian Sports Sedan Championship 1980 - Tony Edmondson, Alfa Romeo Alfetta GTV Australian