Powering the GTO Engineering 250 SWB is a 4.0-litre Colombo V12, an engine that traces its roots back to 1947 when Gioacchino Colombo designed Ferrari’s first V12. Although it began as a 1.5-litre unit, the basic design evolved for nearly four decades, growing in capacity and powering some of Ferrari’s most important road and racing cars, including the 250 GTO, 250 SWB, 275 GTB, and 365 Daytona. Its compact 60-degree layout, all-aluminium construction, and smooth, high-revving nature made it one of the most influential V12s of the post-war era. For the 250 SWB, GTO Engineering builds its own version using the original Colombo architecture with updated internal components and modern manufacturing methods.