Hydra-Matic, Dynaflow, Powerglide, and New Content! (Well, sort of.)

As you probably all know, I’ve been working for months on an extensive revamp of the second part of my 2010 article on GM’s early automatics, covering Dynaflow, Powerglide, their successors (including Twin Turbine Dynaflow, Turboglide, and Dual-Path Turbine Drive), and the later generations of Hydra-Matic. That revamp is now done.

The article has been almost completely rewritten, adding a lot of new information (more than doubling its length in the process) and incorporating a lot of corrections. Unlike the previous version, I’ve made a concerted effort to explain the mechanics of each of the 14 transmissions discussed.

You can read it here. If you somehow missed the revamped Part 1, covering the origins of the first Hydra-Matic, click here.

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