Cannot answer all your questions, but the first Powerflite
appeared around June, 1953, and was available on Chrysler Custom Imperials
and Crown Imperials. When the 1954 models appeared, Powerflite was
optional on all Dodge, DeSoto and Chrysler models. Plymouth got
Powerflite in mid-1954.
Torqueflite (A-466) was introduced mid-1956 and was available on the
Imperial. With the introduction of the 1957 models, Powerflite was
optional on all Plymouths, Dodges, DeSoto Firesweep and Chrysler Windsor,
and standard on all other DeSoto models. Torqueflite was optional on V8
models of Plymouth, Dodge, DeSoto and Chrysler Windsor, and was standard on all
Imperials and the Chrysler Saratoga and New Yorker.
In 1960 Chrysler introduced the Torqueflite Six (A-904) and was optional on
all six cylinder Mopar cars and Powerflite became a V8-only transmission.
Both Powerflite and the cast-iron case A-466 Torqueflite were replaced with the
aluminum case A-727 Torqueflite for the 1962 model year.
I'm not sure what you mean by "..install flywheels and stop putting the
ring gear on the torque converter". As far as I know, Chrysler never
built an automatic transmission with a flywheel and has always put the ring gear
on the torque converter. All illustrations I have seen of Powerflite and
Torqueflite (A-466, A-727 and A-904) have had the ring gear on the torque
converter.
Models with a manual transmission, which needs a flywheel with the clutch,
has the ring gear on the flywheel. The only exception to this was in
the case of Fluid Drive, where the ring gear was mounted on the fluid coupling
or torque converter (as the case may be) as the clutch was behind the fluid
coupling/converter.
I believe the torque converter on the Powerflite is different from that
used on the Fluid-Torque Drive and the two will not interchange.
Bill
Vancouver, BC
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