A former South African speedway champion, Trevor rode in Europe before returning home to compete on four wheels with a Ford-engined Type 52 Cooper in 1961.
He proved to be an extremely fast and fearless competitor and itched to return to Europe, which he did in 1962, to race in Formula Junior.
Trevor did well (second at Nogaro and Caserta) until the money ran out, so he then returned home to contest the South African championships - and his only Grand Prix - in the ex-Love Cooper.
Blokdyk was back in Europe once more in 1965 to race in F3, when he was one of that season's star performers until a massive crash at Albi hospitalised him for three months with pelvic and leg injuries.
He made his comeback at Rouen in 1966, finishing sixth, and continued to race in F3 in 1968 and early 1969, before returning to compete in South Africa.
Extremely popular, and always ready with a smile, Trevor took up farming upon retirement, but died suddenly of a heart attack, aged just 59.