Type 579/FL (in the Italian Grand Prix configuration), double wall of aluminium panels riveted to a tubular steel structure to form a stress-bearing semi-monocoque
At the end of the 1965 Formula One season, a Ferrari 158 chassis was fitted with a 2.4-litre (2404.74 cc) Dino V6 engine, updated with fuel-injection, in order to take part in the 1966 Tasman Series. However, intended driver John Surtees was still recovering from injuries sustained in an accident in a Can-Am race at Mosport Park, and the Tasman entry was withdrawn. The car was then used as the second team car for the start of the 1966 Formula One season, alongside the new Ferrari 312.
Lorenzo Bandini used the 246T for the first two races in 1966. His best result was second place and fastest lap at the 1966 Monaco Grand Prix, followed by third place in Belgium. The car was then put aside until the German Grand Prix, where it was a third team entry driven by Ludovico Scarfiotti. Scarfiotti out-qualified his teammates in their more powerful 3-litre cars, but retired with electrical problems. The final outing for the 246T was the 1966 Italian Grand Prix, lent by Ferrari to Reg Parnell Racing and driven by Giancarlo Baghetti. Baghetti was running as high as fifth until he had problems with his throttle linkage and eventually finished last, nine laps in arrears.