03/03/2020
In 1976, as Jaguar faced tepid sales for its new XJS model, sales VP Michael Dale reached out to Bob Tullius, whose Group 44 team made major strides in Trans-Am competition under the Quaker State sponsorship. Tullius’s team accepted an XJS for the 1977 season, and after significant modifications followed by some keen driving, Tullius emerged with the Drivers’ Championship for the Category 1 division.
For 1978 the relationship continued, and the body for the offered car, chassis no. 78-44, received a factory-conducted acid dip to shave weight before being submitted to Group 44 for race preparation. The coachwork was then mounted on a special tube-frame chassis with a 32-gallon fuel cell and fitted with a 5.3-liter Jaguar V-12 equipped with six Weber carburetors. Tullius drove this lighter, more purpose-built car to great success, finishing 2nd at Westwood, British Columbia, in early June 1978, and 3rd at Portland, Oregon, a week later.
On 25 June 1978, the Jaguar roared to its first win, emerging triumphant at Mont Tremblant in the first of seven consecutive victories that closed out the season. A 1st-place finish at Road America in early September sealed another Drivers’ Championship for Tullius, while a win at the season-ending contest in Mexico City in early November earned the Manufacturers’ title.
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1978 Jaguar XJS Group 44 Trans-Am heads to sale at Amelia Island sale. 📷: for RM Sotheby’s
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@ Amelia Island