Ford LSG635 vs PSI 4.5L
The Ford LSG635 and PSI 4.5L are both natural gas generator engines in a similar power class. Both are rated at roughly 51 kVA. Displacement is 3.5 L versus 4.5 L. The table below compares their full specifications side by side.
| Specification | Ford LSG635 | PSI 4.5L |
|---|---|---|
| Headline rating | 51 kVA | 51 kVA |
| Standby (50 Hz) | — | 41 kWe |
| Prime (50 Hz) | — | 35 kWe |
| Standby (60 Hz) | — | 45 kWe |
| Prime (60 Hz) | 41 kWe | 40 kWe |
| Displacement | 3.5 L | 4.5 L |
| Configuration | V6 | L4 |
| Cylinders | 6 | 4 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | U.S. EPA Stationary |
| Dry weight | 177 kg | 500 kg |
| Origin | United States | United States |