The 620 engine was light for its time, weighing around , compared to  for the Maserati V12, but in 3 litre Formula One form only produced around 300 brake horsepower (220 kW) at under 8000 revolutions per minute (rpm), compared to 330–360 bhp (250–270 kW) produced by the Ferrari and Maserati V12s. However, it produced high levels of torque over a wide range of engine speeds from 3500 rpm up to peak torque of 233 pound feet (316 N·m) at 6500 rpm.
The 620 engine was light for its era, weighing around , compared to  for the Maserati V12, but in 3-litre Formula One form only produced around 300 brake horsepower (220 kW) at under 8000 revolutions per minute (rpm), whereas Ferrari and Maserati V12s generated 330–360 bhp (250–270 kW). However, it delivered high torque over a broad range of engine speeds from 3500 rpm to peak torque of 233 pound feet (316 N·m) at 6500 rpm.