Engine
Scroll tables horizontally to view every column.
| Engine Detail | |
| Engine | Hercules OOC |
| Fuel | gasoline |
| Cylinders | 4-cylinder |
| Cooling / layout | liquid-cooled vertical L-head |
| Displacement | 226 ci 3.7 L |
| Bore/Stroke | 4.00x4.50 inches 102 x 114 mm |
| Air cleaner | oil bath |
| Rated RPM | 1200 |
| Coolant capacity | 16 qts 15.1 L |
| Engine Detail | |
| Engine | Hercules OHC |
| Fuel | gasoline |
| Cylinders | 4-cylinder |
| Cooling | liquid-cooled |
| Notes | The overhead-valve (OHV) Hercules engine replaced the flathead OOC in 1936, the final year of the GP production. |
| Displacement | 226 ci 3.7 L |
| Bore/Stroke | 4.00x4.50 inches 102 x 114 mm |
| Rated RPM | 1200 |
Values may vary by engine, transmission or configuration. View source page