Engine swap

Saab 96 with a Ford Cologne V6 engine instead of the standard Ford Taunus V4 engine
Berkeley SA492 with a Honda CB400 engine
Volvo B18/B20 fitted to a VW Beetle for racing
1959 MG MGA with a Mazda MX-5 engine
Chrysler Intrepid with supercharged V8 and rear-wheel drive conversion

In car tuning culture, an engine swap is the process of removing a car's original engine and replacing it with another. This may be a like-for-like replacement or the installation of a non-factory specification engine. Typically, an engine swap is performed for performance using a more powerful engine, but may also be performed for ease of maintenance as older engines may have a shortage of spare parts.