Image credits: Lamborghini
In the early 1970's, manufacturers that were producing vehicles for the United States had to comply with new government regulations and emission standards that not only made the vehicles safer but more fuel efficient. The Islero was forced to comply in order to continue to be sold in the United States. Marcello Gandini of Bertone was tasked with creating designs that would fit atop of a shortened Espada platform.
In 1970 the Lamborghini Jarama was introduced and stayed in production until 1976. The GT version lasted from 1970 through 1973 while the GTS was produced from 1973 through 1976.
The GT and GTS were very similar in design; most of the changes were to the mechanics. The GT was powered by a V12 engine producing 350 horsepower while the GTS produced 365 horsepower. The GTS was given power assisted steering, an optional Chrysler TorqueFlite automatic transmission, and removable roof panels. The engine had been tuned to produce more horsepower by introducing a new exhaust system, revised heads, carburetion and camshafts. The interior was slightly modified, given new seats that were slimmer, resulting in more rear legroom. Brushed aluminum replaced the wood trim. On the exterior, the GTS had revised taillights, courtesy of the DeTomaso Deauville. Five-bolt wheels replaced the previous wheel rims. Air intake could now be found on the hood and behind each front wheel were air-extraction openings.
During the entire production run for the Jarama, 327 examples were produced. 177 examples were of the GT version. 10 examples were produced with the optional automatic transmission on the GTS. On display in the Official Lamborghini museum is Ferruccio Lamborghini's own personal Jarama GTS, chassis number 10418.