Tag: GM

Secrets of the Simpson Gearset

If you’re familiar with transmissions like the Chrysler TorqueFlite and GM Turbo Hydra-Matic (among others), you may have heard of the “Simpson gearset.” In this installment of Ate Up With Motor, we look at the origins and function of the Simpson gearset and briefly introduce you to its inventor, the late Howard W. Simpson.
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Giving Slip the Slip: Lockup Torque Converters and Split Torque Automatic Transmissions

Fluid clutches — fluid couplings and torque converters — have many advantages for automotive transmissions, but with those benefits comes a cost: fuel-wasting hydraulic slippage even at cruising speed. Since the 1940s, automakers have come up with a variety of strategies for reducing or eliminating that slip, including series parallel “split torque” transmissions and different types of converter lockup clutches. In this installment of Ate Up With Motor, we take a look at how GM, Ford, Chrysler, Packard, and Studebaker have approached this slippery problem from 1949 through the late eighties.
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The MacPherson Strut

Although frequently misunderstood and often misspelled, MacPherson struts are one of the most common suspension systems used on modern cars, found on everything from the Proton Savvy to the most formidable Porsche 911 Turbo. In this newly revised and updated installment of Ate Up With Motor, we’ll take a look at the origins and workings of the MacPherson strut, including modern variations like the Toyota Super Strut, GM HiPer Strut, and Ford RevoKnuckle.

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Plutocrat Pony Car: The 1966-1970 Buick Riviera

It occurred to us recently that while we’ve written about the 1963-1965 Riviera and the controversial 1971–1973 “boattail,” we keep skipping over the second generation of Buick’s sporty personal luxury coupe. However, the second-generation Riviera outsold its predecessor and its successor combined — also dispatching its groundbreaking Oldsmobile Toronado cousin for good measure. In this installment of Ate Up With Motor, we take a closer look at the 1966 Buick Riviera.

1969 Buick Riviera badge
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Son of Stingray: The 1969-1973 Opel GT

The 1969 Opel GT was Opel’s first show car and the German company’s first two-seat sports car since before World War II. Based on the humble Kadett B and often considered a miniature Corvette, the GT also owed a great deal to Chevrolet’s compact Corvair and a concept car once intended to replace the ‘Vette. In this installment of Ate Up With Motor, we take a look at the origins, history, and fate of the 1969–1973 Opel GT and its various planned successors.

1971 Opel GT badge
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Pillarless Pioneer: The 1949 Buick Roadmaster Riviera

In mid-1949, GM’s senior divisions introduced a trio of glamorous new models — the Cadillac Coupe de Ville, the Oldsmobile Futuramic 98 Deluxe Holiday coupe, and the Buick Roadmaster Riviera — that are popularly, if incorrectly, considered the first pillarless hardtops. This week, we consider the origins of this quintessentially (though not uniquely) American body style and examine the development of the the 1949 Buick Roadmaster Riviera and the origins of the hardtop coupe.

1949 Buick Roadmaster Riviera roof exterior
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This Time, It’s Personal: The 1967-1970 Cadillac Eldorado

The 1967 Cadillac Eldorado is a milestone Cadillac by any standard. Rakish, sophisticated, and surprisingly sporty, it was the division’s first front-wheel-drive car and its first serious entry in the burgeoning personal luxury genre. This week, we explore the story of the first FWD Eldorado.

Author’s note: An earlier version of this article first appeared in August 2009. We’ve completely rewritten and expanded it, clearing up some errors and misconceptions and adding new information and new images.

1968 Cadillac Eldorado fin
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Out in Front: The Front-Wheel-Drive Oldsmobile Toronado, Part 2

Most histories of the Oldsmobile Toronado start and end with the original 1966 models, but that wasn’t the end of the story. The Toronado survived another 25 years and its most commercially successful period was still to come. This week, we look at the history of the 1971-1992 Toronado and examine another vehicle that shared its novel powertrain: the 1973-1978 GMC Motorhome.

1992 Oldsmobile Toronado badge
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Contrary Compact: The Life and Death of the Chevrolet Corvair

There is no American automobile more controversial than this one. It’s the car that launched the career of Ralph Nader and led directly to the passage of the first U.S. federal safety legislation. Automotive historian Michael Lamm called this car a martyr; others said it should never have been built at all. It was flawed, at least in its original iteration, but it was also one of the most daring cars GM has ever built. We’re talking about the Chevrolet Corvair.

Author’s Note: The original version of this article was written in 2007. It has been extensively revised and expanded, adding new information and correcting various factual errors. WARNING: The article contains an animated GIF.

1960 Chevrolet Corvair badge
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Wide Track: Bunkie Knudsen, Pete Estes, and the Pontiac Renaissance

In 1956, GM’s Pontiac Motor Division was close to death, its sales down, its market share declining, and its image at a low ebb. That summer, however, help arrived in the form of Bunkie Knudsen, Pete Estes, and John DeLorean. Together, they lifted Pontiac out of its mid-fifties doldrums and put it on track for its unprecedented success in the 1960s. This week, we look back at the reign of Bunkie Knudsen and the birth of the legendary Wide Track Pontiacs.

1957 Pontiac Star Chief wheelcover © 2010 Aaron Severson
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Oscar Banker, the Automatic Safety Transmission, and the Art of Research

We’re going to take a different approach for this week’s article. Instead of presenting another history, we’ve decided to give you a look at the way we approach the research for these articles, and tackle a challenging comment posed by one of our readers: did inventor Oscar Banker design the 1937-1939 Oldsmobile/Buick Automatic Safety Transmission, the predecessor of Hydra-Matic?

Important author’s note: Much of this article, originally written in 2010, was speculative and thus many things turned out to be off-base or wrong. I’ve opted to leave the article up for the time being (having removed some of the more glaring errors) until such time as I can more thoroughly revise it, but please keep in mind that this is NOT an authoritative piece on Oscar Banker. Caveat lector!
1974 Cadillac Miller Meteor ambulance Power Light
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Wouldn’t You Really Rather: A Brief History of the Buick Gran Sport

The words “sporty Buick” have never quite rolled off the tongue, but over the years, Buick has produced a surprising number of performance cars, from the speedy prewar Century to the turbocharged Grand National and GNX. From 1965 to 1975, it even offered its own entry in the burgeoning Supercar market: the Skylark Gran Sport. This week, we take a look at the history of Buick muscle and the career of the Skylark Gran National, GS400, GS455, and GSX.

1965 Buick Skylark GS yellow badge
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