In the same year as 340 F1, the last Lampredi-designed F1 engine was inaugurated. Now at 4.5 L (4493 cc) and installed in 375 F1, Ferrari was finally able to beat Alfa Romeo, in the British Grand Prix at Silverstone. For the 1952 season Ferrari modified the 375 F1 for the Indianapolis 500 race. The bore was reduced by 1 mm (to 79 mm) for a total displacement below 4.4 L (4382 cc). New Weber 40IF4C carburettors improved power output to impressive . All Formula One "Lampredi" V12s used dry sump lubrication. This engine family remained the only Ferrari V12 never upgraded to a four-cam configuration. In 1953 "Lampredi" V12 powering customers 375 MM had displacement enlarged to 4.5 L (4522 cc) and power grew to . Its detuned version also powered the 375 America. Factory 375 MMs received different engines straight from Formula One, displacing 4493 cc.