There’s just something special about an old American car with a supercharger added. We recently talked about the rare 1957 Ford Thunderbird F-Code with a factory-fitted McCulloch. But what about a GT350 Hertz Mustang with a period-correct Paxton supercharger?
That’s a pretty special combination, unique even. This car is called a GT350H. The H stands for Hertz because this was a rental car originally but is now one valuable collectible pony. As Shelby historians will tell you, they made 2,378 GT350s in 1966. Of those 1,001 were the Hertz edition.
Hertz wanted something special to offer its Sports Car Club members and got in touch with Shelby American. Back in 1966, these powerful ponies rented out for $17 per day and 17 cents a mile. Now, that might not sound like much, but back in 1966, a GT350 would only cost $4,428 at a dealership. And because Hertz bought them wholesale, it only paid about $3,800 per unit.
Now, the GT350H was available in Wimbledon White, Sapphire Blue, Ivy Green, and Candy Apple Red. However, the majority were done in this distinctive combo of Raven Black with gold stripes.
In stock format, the Shelby is a K-code, which means that under its hood is a 289 cubic-inch “High Performance” V8 with solid lifters. It makes 271 horsepower stock but Shelby tuned it to 306 hp with better exhaust headers, an aluminum intake, and a Holley carburetor.
In 1966, you could order a Paxton supercharger kit for $700. It increased power by a claimed 46%, but it wasn’t available on the Hertz car and only 11 of them were made at the time. That’s why finding a GT350H with a Paxton is so interesting. It’s a “what if?” kind of thing.
What’s interesting is about half of the car still has the original black paint. It also has a lot of original factory-fitted components and the interior is all from 1966 as well, which adds a lot of value to the car. Even the Paxton supercharger is original and has the code to prove it’s a Shelby part. Obviously, the GT350H didn’t have this back in the day, but the upgrade is 100% correct.
Taking all these things into consideration, Hagerty’s appraiser Colin believes this Paxton-equipped 1966 Shelby GT350 Hertz is worth $225,000. Why? Because it’s really difficult to find a “survivor” like this.