For 1973, Alfa Romeo fielded the all-new Tipo 33TT12. Elegantly clothed in a fibreglass body with a light alloy tubular chassis it was also blessed with a 12 cylinder boxer engine capable of producing 500bhp, despite this the 33TT12 was still in its infancy and was not a match for the likes of Matra and Ferrari. 1974 started well for the Autodelta Alfa Romeo outfit with 33TT12s finishing a formidable 1-2-3 at Monza but the Matras remained the car to beat and again the Championship laurels would elude Alfa Romeo, disconsolately the Autodelta-run factory team decided to retire from Sportscar racing along with Ferrari and Matra. With the obvious competition for the Tipo 33TT12 absent, wealthy German private entrant Willy Kauhsen went to Carlo Chiti with the concept of running the redundant 33TT12s in the 1975 World Manufacturers Championship. A deal was thus structured by which Autodelta would professionally run a variety of top level professional drivers in at least two (sometimes three) 33TT12s as a non factory supported team under the W.K.R.T. (Willibert Kauhsen Racing Team) banner. During the winter of 1974/1975, Autodelta modified the suspension in order to use superior Goodyear tyres, upgraded the brakes and incredibly managed to further lighten the car thus bringing weight down to just 670kgs. Success was almost a pre-requisite and the Alfa Romeos fended off an early challenge from Alpine-Renault and Porsche to dominantly romp home with seven victories from the eight races entered, taking the World Manufactures Championship and the Drivers’ crown en-route.
| engine | Flat-12 w/Dry Sump Lubrication |
| position | Mid Engine |
| aspiration | Twin Turbo |
| valvetrain | DOHC 4 Valves / Cyl |
| fuel feed | Lucas Indirect Fuel Injection |
| displacement | 2993 cc / 182.6 in³ |
| bore | 77 mm / 3.03 in |
| stroke | 53.6 mm / 2.11 in |
| power | 372.9 kw / 500.1 bhp @ 11000 rpm |
| specific output | 167.09 bhp per litre |
| bhp/weight | 746.42 bhp per tonne |
| torque | 336 nm / 247.8 ft lbs @ 9000 rpm |
| body / frame | Fibre Glass Body Over Aluminum Sheet & Tubular Chassis |
| front brakes | Girling Discs |
| rear brakes | Girling Discs |
| f suspension | Double Wishbones w/Coil Springs over Koni Dampers |
| r suspension | Double Wishbones w/Coil Springs over Koni Dampers, Radius Rods |
| curb weight | 670 kg / 1477 lbs |
| front track | 1430 mm / 56.3 in |
| rear track | 1430 mm / 56.3 in |
| length | 3700 mm / 145.7 in |
| width | 1900 mm / 74.8 in |
| height | 960 mm / 37.8 in |
| transmission | 5-Speed Manual |
| gear ratios | 2.36:1, 1.61:1, 1.24:1, 1.10:1, 0.86:1 |
| top speed | ~330 kph / 205.1 m |
