Tag Archives: SD-220

SD and BD Engines, bore and stroke

This is the bore and stroke on both engines in 1955 SD 220   3 9/16 bore x 3  11/16 stroke      7.0 comp ratio   108 HP @ 3800 RPM SD 240   3 9/16 bore x 4.018     stroke      7.0 comp ratio   131 … Continue reading

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