Chrysler Master Tech - 1953, Volume 6-6 Plymouth Hy-Drive

[@dam4274]

So what happened to the Hy drive after some time? Was it reliable? Did the Torque Flight eventually replace it?

[@mrBILL-sr2cu]

Powerflite fully automatic transmission was introduced in 1953. Powerflite became an option on Plymouths in 1954. It sort of made Hy-Drive unnecessary and after 1954, was discontinued.

[@craigjorgensen4637]

Mickey Mouse made the Hy Drive!

[@davidcoles9775]

​@@mrBILL-sr2cu2:58

[@davidcoles9775]

Chrysler and divisions made too many variations and name tags, confused most drivers

[@davidcoles9775]

With Dodge in 1951 the Gyromatic 4 speed had two low and two high ranges

[@craigjorgensen4637]

You would think that Plymouth could have developed a conventional automatic transmission before 1955,

[@Rosenbar731]

You both are referring to "Fluid Drive."

[@jonathanmorrisey5771]

Fluid drive is the basis for Hy-Drive.
This is the hydraulically-shifted trans borrowed from Chrysler and DeSoto.

[@somerandomdude23764]

Does anyone Know the shift pattern for Hydrive. I can't seem to find anything online

[@omegarugal9283]

a mirrored lower case h

[@somerandomdude23764]

@@omegarugal9283 I figured it out. Thank you though

[@UfoDan100]

I think Chrysler first introduced hy-drive in 1939 .

[@chuckschafer6728]

that was fluid =drive

[@marklawrence8470]

My 47 dodge has it