The Monteverdi High Speed is a series of sports cars with different bodies produced from 1967-1976 by Swiss automaker Monteverdi. The High Speed series included several coupe models, a convertible and a sedan. In addition, the Coupé Berlinetta and the Cabriolet Palm Beach also belong to the model family. Conception Generally, the Monteverdi High Speed series models are described as uncomplicated technically. They were based on a box frame of square steel tubes. The design of the frame was Monteverdi's own; The chassis was manufactured by Stahlbau AG in Muttenz in the canton of Basel-Landschaft, which according to some information at least momentarily belonged to Monteverdi. The front suspension parts were made by Alford & Alder in the United Kingdom, the rear axles were by Salisbury, brakes by Girling, and the steering by ZF. The engines used were V8 engines from Chrysler, with outputs of about originally. The output is also the origin of the model names. However, this claimed power was in SAE Gross; the corresponding DIN values were about 35 percent lower. On the other hand, Chrysler's big-block engines, especially those made by Chrysler's Mopar components, could deliver far greater horsepower without major problems. It was also possible to specify Chrysler's slightly smaller but much more powerful Hemi engine; this was eventually made available to all High Speed models. As American manufacturers had to meet more stringent emissions standards at home, beginning at the end of the 1960s, the engines supplied to Monteverdi also became less and less powerful. By 1974, Monteverdi claimed a top speed of only for the 375 L 2+2, and in period road tests not even this always proved achievable. This from a design which had been able to reach only a few years earlier, using an engine without the emissions restrictions. Monteverdi never modified the engines for more power, limiting himself to adding a larger oil pan and installing an oil cooler (with a transmission oil cooler added on automatic-equipped cars). Variants Between 1967 and 1976 Monteverdi presented a variety of variants of the High Speed series of models. All of these models have been uniformly designated by the factory as High Speed 375 (denominating the engine's power in SAE gross); they carried suffixes identifying coupés on standard wheelbase, short coupés, convertibles, and sedans. In general, two series can be distinguished. The first series, produced from 1967 to 1968, included a handful of