There were fourteen specially ordered non-GT DB4 Aston Martins fitted with the higher-performance GT engine. Over its production run, the GT engine was built in 3.7 and 3.8 liter displacements. The GT Coupe fitted with the 302 horsepower engine could race to 60 mph in just 6.1 seconds with top speed achieved at 150 mph. Special equipment included three twin-choke Weber carburetors and an ignition system that utilized two distributors to attend to the twin sparkplugs for each cylinder.
There were three non-GT DB4 Series 3 cars fitted with the GT engine. Five Series 4 and six Series 5 cars accounted for the remaining installations. The Series 5 non-GT cars with the GT engine - in comparison to proper GT cars - had a longer wheelbase and added interior room.
This outstanding example is one of only six DB4 series 5 that were built with a Vantage GT engine. A 15' wheelbase which was 3 1/2' longer than a standard DB4! The car was restored, starting late 1986 and ending in early 1988. The restoration was performed by Beaufort Restorations of Maidstone, England and the engine was built by Aston Specialist, Richard Williams. It was discovered by Mr. Williams that the original engine block (370/0213GT) was not useable, so the block was changed to 400/1358. While Beaufort restorations pressed on with the restoration of the car, Richard Williams was to build up the engine to specifications similar to that used for the engine of the racing DB4's that he prepares. The only provision was that it must have good road manners too. This beautifully restored example is equipped with a five speed gearbox and a DB5 rear end, this car was vintage raced successfully for a number of years. Some of the extra's fitted to this car from new was a 17' steering wheel, heated rear window, electric windows, 2 wing mirrors and 2 Marchal fog lamps.
In 2009, this car was offered for sale by Bonhams at the Exceptional Motorcars and Automobilia at the Quail Lodge in Carmel, CA. It was estimated to sell for $500,000 - 600,000, but failed to find a willing buyer capable of satisfying its reserve.
In 2010, the car was offered for sale at the Sports & Classics of Monterey presented by RM Auctions. It was estimated to sell for $350,000 - $425,000. As bidding came to a close, the car had been sold for the sum of $330,000 inclusive of buyer's premium.Also photographed at :