The pilot, who had previous experience on tailwheel aircraft, was undergoing dual conversion training on the Vans RV-8. The weather conditions were fine, with a wind of 3 to 5 kt, variable in direction. He reported that he flew a stable approach and achieved a gentle touchdown, which the pilot’s instructor reported as being normal for the type. As the aircraft decelerated after landing, it deviated to the right and the pilot attempted to correct the deviation with increasing left rudder pedal. The aircraft then yawed to the left and ground looped (at a speed the instructor estimated as 30 kt) before being brought to a stop on the runway. The main wheel fairings were broken but the aircraft was otherwise undamaged.