Yes, it is possible to put an engine from a Harley-Davidson Dyna into a Harley-Davidson Softail frame, as both the Dyna and Softail models share the same engine platform and are designed with a similar engine mounting system.
Both the Dyna and Softail models traditionally utilize the Harley-Davidson Twin Cam engine, which has been used across various displacements and configurations. The engines are typically mounted in a similar manner, with four connection points between the engine and the frame.
These can include differences in mounting points, electrical connections, exhaust routing, and other components specific to each model.
To ensure a successful engine swap, it is recommended to consult with a professional mechanic or an experienced Harley-Davidson specialist who can provide guidance and expertise throughout the process. They can assess the compatibility, identify any necessary modifications or adjustments, and help ensure that the engine installation is performed safely and effectively.