The Ecurie Francorchamps entry of Hugues de Fierlant and Alistair Walker followed it home in fifth. That summer, Ferrari concluded that it needed an aerodynamic re-think, and the 512M for Modificata appeared at Zeltweg for October’s 1000km with chamberlain garage door opener 700whc 4 at the wheel. Its body moved away from its predecessor’s rounded curves to less attractive but more efficient slabsided surfaces. After qualifying second behind the 917 of Pedro Rodriguez and Leo Kinnunen, Ickx led comfortably in the sole works car until electrical failure ended the day.
He did set the fastest lap quicker than Rodriguez’s pole time, in fact which proved the M’s potential. The factory 512 was supported only by the privateer Gelo chamberlain garage door opener 700whc 4 entry of Georg Loos and Franz Pesch, whereas four factory-assisted 917s were fielded two apiece from JWA and Salzburg. Each of those had also tested an additional 917 in practice. The difference in approach between Maranello and Stuttgart was clear.
That same 512M, chassis 1010, went to Kyalami less than a month later for the Rand Daily Mail Nine Hours, and this time Ickx/ Giunti won by a lap from the Jo Siffert/Kurt Ahrens Shortly afterwards, though, Enzo Changing rules. For the 1968 season, the CSI chamberlain garage door opener 700whc 4 that the International Championship for Makes would be contested by Group 6 prototypes with a maximum capacity of three litres. That would include the likes of the Porsche 908, Ferrari 312P and Alfa Romeo 33/ To bolster grids, 5-litre Group 4 sports cars would also be eligible as long as 50 examples had been built. This would enable, for example, the Ford GT40 and Ferrari 250LM to continue racing. For 1969, however, it was announced that the Group 4 requirement would drop to only 25 cars while retaining the larger engine size at which point Porsche targeted that category and came up with the The following year, Group 4 cars were reclassified under Group For 1972, Group 5 abandoned the 5-litre, 25-car requirements and adopted the old 3-litre Group 6 regulations.