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Greg's List: Mercedes-Benz 350SL
By Greg Warner

Classic Car Articles by Greg Warner The Mercedes-Benz SL series began it's production run way back in 1954 (actually the series began in 1952, but as a racing version only) and continues through today. The period we are concentrating on here, was produced from April 1971 (1972 introduction in USA) through mid year 1989, which was the longest run in the series to remain basically unchanged throughout the length of it's production. The "SL" basically stood for "Sport Leicht" in German, which translated to "Sport Light" in English. Although the original versions were actually, relatively "light" in weight, that was not necessarily true when they introduced the sporty and luxurious new "SL" version for 1972. It put on over 300 extra pounds in comparison to it's predecessor and added many innovations including a new 3.5L, V8 (4.5L for USA) powerplant and all the creature comforts of a luxury car.

For 1972, Mercedes-Benz's "SL" series would jump from a 2.8L straight, six cylinder engine and into a 4.5L, V8 engine (at least here in the USA, mainly due to stricter US emissions laws, in order that the car would have enough power to satisfy the American buyers). In fact, from 1972 to 1989 the "SL's" would have eight different engines (six V8's, only three of which were used in USA models and 2 in-line six's, none of which were used in USA models) available throughout the production run. The USA version of the 350SL actually had a 4.5L, V8 (rated between 180 hp to 190 hp) but was labeled 350SL for 1972 models only and was changed to 450SL badging for 1973 models. This model/engine carried through to 1980 when Mercedes-Benz changed to the 380SL with the 3.8L, V8 (rated at 155 hp) for 1981 through 1985. The final run of the series, 1986 through 1989, had once again, increased displacement to 5.6L, V8 (rated at 227 hp) and a 560SL badge was used. They all came with a three-speed automatic transmission through 1979 and from 1980 through 1989, had a four-speed automatic transmission. All years and models were equipped with a type of Bosch, fuel Injection and all were rear-wheel drive.

While the earliest versions of "SL" bodies were made of aluminum, all the 1972 through 1989 models were made of sheet metal and were comprised of a "unibody" construction. They were all a two-seater, soft-top convertible, with removable hardtop and optional rear foldable, "jump" seats. They also had disc brakes all the way around (and in 1980 they introduced the first car with electronic ABS brakes in the USA) and re-circulating ball type steering gears. In 1982, Mercedes also introduced a driver-side, front airbag system. The front suspension was handled by double wishbone arms, coil springs with added rubber spring buffers and stabilizer bar. The rear suspension was handled by the strange, but effective, diagonal type, trailing-arm, swing-axle, supported by coil springs and a stabilizer bar. Wheelbase was 96.9", front track was 57.2" and rear track was 56.7" up to 1985 and 57.6" (front) and 57.7" (rear) after that, through 1989. Overall length was 172.5" for 1972 through 1980 models, 182.3" for 1981 through 1985 models and 180.3" through 1989. Overall width was 70.5" and overall height was 50.8" for all 1972 through 1989 models. Dry weight was 3,597 lbs. for 1972 through 1980 models, 3,460 lbs. for 1981 through 1985 models and 3,650 lbs. for 1986 through 1989 models.

When it was introduced to the USA in 1972, the Mercedes-Benz "SL" models were very advanced, luxurious, sportscars directed at a specific upper-class market and they more than filled that niche and some 237,000 units were produced worldwide during the years of 1971 through 1989. It seemed, by the end of it's run however, that the now 18 year old "SL" had lost it's luster and was long overdue for a change. That dramatic change would come in a big way in 1990.

Question of the week: Who was Dr. Victor Wouk known as and what unique and forward-thinking vehicle (of the time) was he almost famous for introducing to the world in 1972?

(It is one of the best kept secrets of the time and rumored that the U.S. Government, who had put their stamp of approval on the program to design such a vehicle, while at the same time squashing the program, reportedly to protect the "Big-Three" Automobile Manufacturers and of course the "Big-Oil" companies!)

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