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| Cubic Inch | Year | Bore & Stroke | Firing Order | Estimated H.P. @RPM | Estimated Torque @ RPM | Compression Ratio | Carburetor | Valve Lifter Type | Normal Oil Pressure |
| 413-2 | 1971 | 4.188 x 3.75 | 1-8-4-3-6-5-7-2 | 220@3600 | 386@2200 | 7.5 | 2V | HYD. | 70 |
| 413-3 | 1971 | 4.188 x 3.75 | 1-8-4-3-6-5-7-2 | 283@3600 | 407@2000 | 7.5 | 4V | HYD. | 70 |
| 413 | 1972-78 | 4.188 x 3.75 | 1-8-4-3-6-5-7-2 | 180@3200 | 334@2000 | 7.5 | 2V | HYD. | 70 |
