1973 Porsche 911 2.7S – The Factory G-Series Prototype

Original factory prototype for the introduction of the 2.7S model


After 1973, it was decided that the 2.4 litre wasn’t really fast enough for the 911, with the impending American emissions standards threatening to slow the model down, the 2.7-liter engine developed for the Carrera RS was detuned slightly and introduced across the board. This made the 911 a very usable sports car for all driving conditions. It was only natural that capacity for mainstream production should be increased to 2687cc. Impact bumpers were now required to satisfy American law and production ran from 1974 to 1977.


This exceptionally rare and interesting 911 was produced in February 1973 using a 911 2.4S chassis number (as were very early 930 Turbo prototypes), supplied from the works “without engine” in order for the new 2.7 S-specification power unit to be fitted and tested with the latest Bosch K-Jetronic fuel injection system.


After three years’ factory use the 911 was road-registered and sold to its first owner, finished in Copper Diamond Metallic with a brown leatherette interior. A hidden production number denoting this as a factory prototype can still be found under the dashboard, and has been confirmed by Porsche AG. Offered with Belgian title papers, a certificate of authenticity from Porsche and correspondence with the Porsche Museum, this very early 911S presents a unique opportunity for the serious Porsche collector.

Sold For €35,680

Auction Schloss Dyck 2018
Auction Date 4th August 2018
Day of Auction N/A

lot details

Lot Number 112
Registration Number EU Registered
Chassis Number 9113300855
Year 1973
Make Porsche
Model 911 2.7S

+44 208 614 7888

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