Ford WSG850 vs PSI 5.7L
The Ford WSG850 and PSI 5.7L are both natural gas generator engines in a similar power class. Both are rated at roughly 68 kVA. Displacement is 5 L versus 5.74 L. The table below compares their full specifications side by side.
| Specification | Ford WSG850 | PSI 5.7L |
|---|---|---|
| Headline rating | 66 kVA | 69 kVA |
| Standby (50 Hz) | — | 55 kWe |
| Prime (50 Hz) | — | 50 kWe |
| Standby (60 Hz) | — | 60 kWe |
| Prime (60 Hz) | 53 kWe | 55 kWe |
| Displacement | 5 L | 5.74 L |
| Configuration | V8 | V8 |
| Cylinders | 8 | 8 |
| 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 | 205.5 kg | 196 kg |
| Origin | United States | United States |
Choosing between Ford WSG850 and PSI 5.7L
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The PSI 5.7L has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.