Modified 1970 Porsche 914-6 with 2.7L Flat-Six Appears on Bring a Trailer

A 1970 Porsche 914-6 with a 2.7L flat-six engine is listed on Bring a Trailer, highlighting rare factory origins and extensive mechanical modifications. Explore full details.

A 1970 Porsche 914-6 has appeared on Bring a Trailer with a configuration that immediately sets it apart: instead of the original two-liter engine, it now carries a 2.7-liter flat-six built with a new Porsche magnesium crankcase and installed as recently as 2024.

The car itself belongs to the already rare 914-6 variant — a six-cylinder version of Porsche’s mid-engine sports car produced in limited numbers. Unlike the more common four-cylinder 914 models, these cars were equipped with engines derived from the 911, making them more powerful and more expensive from the outset. This particular example goes further, combining the larger 2.7 engine with Weber carburetors, electronic ignition, and a Dansk sport exhaust.

The body was refurbished between 2009 and 2011, at which point the odometer was reset. It now shows approximately 6,000 miles. Finished in Irish Green, the car features a removable Targa top, a GT-style engine lid, and a beige leather interior with period-correct simplicity, including an AM/FM radio.

Technically, the build extends beyond the engine. The car has been upgraded with Carrera-specification disc brakes, modified suspension components, and an adjustable brake pressure regulator. At the same time, discussion around the listing highlights practical considerations: engines larger than 2.4 liters in a 914 chassis often require additional oil cooling, reflecting known characteristics of such conversions.

This combination — a rare factory 914-6 paired with significant mechanical upgrades — defines the car’s position. In the auction comments, it is described not as a concours-level original but as a well-sorted driver’s car, suited for active use rather than strict preservation.

Market context reinforces this distinction. Original 914-6 examples command higher values than standard 914 models, but extensive modifications like those seen here shift the focus away from originality and toward performance and usability. As a result, the car appeals to a different segment of enthusiasts.

At the time of writing, bidding has reached $65,000, with interest driven as much by the car’s rare foundation as by the ongoing debate over how far a classic Porsche can be reinterpreted without losing its identity.