The Wrangler Grand Prix was held over two heats, one on the Saturday the other on the Sunday with the result decided on aggregate. Jac Nelleman won the first heat in his works tended GRD 375 from the March 753 of Conny Andersson with the works Ralt RT1 of Larry Perkins third. Nelleman also won the second heat by some six seconds from the GRD 374 of Porky Thyling with Larry Perkins once again in third.
On aggregate it was Nelleman ahead of Conny Andersson and Larry Perkins. Nelleman set a new lap record during his first heat win.