Category: Austin

By on May 18, 2022

We return to the Turbo-Hydramatic once more today, and our third installment sees us at a critical point in the timeline of the automatic transmission. Fuel economy pressure from the government and performance demands of the consumer increased considerably in the intervening years since the THM’s debut in 1964. That meant the creation of lighter, more compact, and cheaper versions of the Turbo-Hydramatic compared to its flagship shifter, the THM400. GM branched out into the likes of the THM350, THM250, and the very problematic THM200.

In 1987, GM stepped away from the traditional THM naming scheme and switched to a new combination of letters and numbers. Number of gears, layout, and strength combined to turn the THM400 into the 3L80. But the hefty gearbox was already limited by then to heavier truck applications; passenger cars moved on to four forward gears after the dawn of the Eighties.

Read More >

By on May 12, 2022

Our Abandoned History coverage of the Turbo-Hydramatic transmission series continues today. The THM was a singular solution to two different automatic transmissions in use by Oldsmobile, Cadillac, and Buick in 1963. Turbo-Hydramatic arrived at a time of modernization for the automatic, which prior to the mid-Sixties was regarded as inefficient and less than smooth.

The THM400 was the 1964 replacement for the Hydra-Matic and Buick’s Dynaflow and established itself as a smooth and reliable gearbox. It proved useful in a variety of luxury and heavy-duty applications and shrugged off weight and torque easily. In short order, it took off as the transmission of choice for various small manufacturers outside of GM. However, no matter how excellent the THM400 was, it found itself squeezed by a drive toward greater fuel efficiency. It was also a bit hefty to be of broad use in smaller or lighter passenger cars. GM needed more Turbo-Hydramatics!

Read More >

By on May 3, 2022

A few weeks ago, we concluded Abandoned History’s two-part coverage of the Chrysler UltraDrive transmission. Within the comments was a request for more transmission coverage of an equally abandoned nature. Let it be so! Come along as we discuss the vast automatically shifted expanse that was the Turbo-Hydramatic transmission family, by General Motors.

Read More >

By on October 8, 2019

Recently Rare Rides featured the Rolls-Royce powered Vanden Plas Princess, which was the very pinnacle of luxury offered by BMC’s coachbuilding arm.

Today we’ll check out one of the less luxurious cars British Motor sold to the proletariat: It’s an Austin Cambridge from 1957.

Read More >

Recent Comments

  • CrystalEyes: If people think eliminating dealers will mean lower prices I expect they will be dissapointed.
  • revjasper: Between Youtube and inexpensive diagnostic tools, the DIY has gotten easier in the past few years. Picked...
  • Jeff S: I clicked on the link to the Dodge A100. Did Murilee ever finish his A100 and if so that would make a good...
  • Inside Looking Out: Americans need to haggle with dealer or give tips to enjoy car buying experience in its full....
  • Jeff S: There are so many you tubers that demonstrate how to repair vehicles even specific makes and models. Very...

New Car Research

Get a Free Dealer Quote

Who We Are

  • Adam Tonge
  • Bozi Tatarevic
  • Corey Lewis
  • Jo Borras
  • Mark Baruth
  • Ronnie Schreiber