Home 1966 GT 350 Main Menu The 1966 GT 350 Shelby Mustang Story

The 1966 GT 350 Shelby Mustang Story

and Hertz cars from Biff’s Rap

Part II The 1966 GT 350
The Shelby-Hertz Mustang Story and the 1966 GT 350’s
By Biff Hitzeman

1966 GT 350 MainHertz GT350HSerial & VIN1966 Ads
1966 GT350 Story 1966 SpecificationsOptions & ColorsCost NewGallery

The 1966 Shelby was designed to meet two requirements: cost effectiveness and increased sales. The most noticeable change to the exterior were five new color options including the basic Wimbledon White with the blue side stripes – now located higher up on the body. Also new were black, red, green and blue – all with white side stripes and the LeMans which could be added at the dealerships.

Due to demand, the exhaust system was extended from behind the body. An automatic C-4 transmission was also offered and an optional rear seat that folded down. The 1966 looked racier with the replacement plexiglass quarter windows and the side air scoops that cooled the brakes. Later in the production year, the fiberglass hood was replaced with the steel hood with functional air scoop due to customer complaints of breakage and a lack of quality fiberglass parts. The grill stayed the same except that the tri-colored pony was smaller. A new GT 350 gas cap and center cap in the steering wheel were added. The interior remained a “black only” option with a roll bar. The dash tach pad in the ’65 was replaced with a large dash mounted 9000 RPM tachometer. The steering wheel was an optional wood-grain Mustang wheel with the special chrome GT 250 center cap. The spare tire was again placed in the trunk to be returned, later in the production year, to the factory location under the hood. The competition seat belts remained.

The famous HiPo 289/306 horsepower engine returned. Probably the biggest change over the ’65 was that the special suspension was no longer offered. Larger stabilizers were used, but the car was no longer lowered. A similar set of traction bars were used along with Ford’s own heavy-duty shocks. Koni shocks remained high on the sought after options list. Early models used the 15″ 5-spoke Crager wheels; whereas later the 14″ Magnum 500 was offered along with the very popular 14″ aluminum 10-spoke wheel. A special deal was struck between Ford and Hertz Rent-a Car for a total of 1000 special Shelby’s. Most of those were Black with special Hertz gold side stripes and gold LeMans stripes. Hertz Shelby’s were also offered in four other colors each with gold stripes.

With the exception of the early Hertz Shelby’s, all had C-4 automatic transmissions. Lots of 4-speeds were being broken. Due to the special competition brakes used on the Shelby, a special instrument panel decal was used on all Hertz Shelby’s for nervous renters. It read “this vehicle is equipped with competition brakes, heavier than normal pedal pressure is required.” Due to the increase of Sunday racers using these “rented Shelby’s” this program was all but cancelled in 1967. During the end of the 1966 production year, Carroll Shelby made six Shelby convertibles as gifts for special friends. One of the best options offered in the ’66 production year was the Paxton supercharger. This bolt-on package advertised an increase of 46% in horsepower. This made the already “hot” 306 horsepower 289 a real screamer, as many a Corvette owner found out.