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1956 Custom Royal Powerflite

Posted 2019-01-03 2:09 PM (#576203)
Subject: 1956 Custom Royal Powerflite

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Posts: 13

It has been suggested to me that the addition of an Overdrive unit to this transmission would improve mileage and lessen engine wear. Does this make sense to do?

56D500boy

Posted 2019-01-03 3:36 PM (#576208 - in reply to #576203)
Subject: RE: 1956 Custom Royal Powerflite

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Gbreslin - 2019-01-03 2:09 PM

It has been suggested to me that the addition of an Overdrive unit to this transmission would improve mileage and lessen engine wear. Does this make sense to do?

George: That is a good theory but I think that in practical terms, it is not likely to be easy or cheap for a 56 Dodge Powerflite. There were overdrive units for the 56 Dodge 3 spd standard transmssions but based on the diagrams below, there are a lot of parts involved. I don't know if you could add an standard trans overdrive to the back of a Powerflite.

(56DodgeStandardTransmission_MainUnit.jpg)

(56DodgeStandardTransmission_OverdriveUnit.jpg)

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56DodgeStandardTransmission_MainUnit.jpg (153KB - 184 downloads)

56DodgeStandardTransmission_OverdriveUnit.jpg (159KB - 191 downloads)

57chizler

Posted 2019-01-04 2:55 PM (#576266 - in reply to #576203)
Subject: RE: 1956 Custom Royal Powerflite

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Adding an OD to the rear of a Powerflite is possible if you have access to lots of machine tools and an OD unit, not practical otherwise. Here's an OD conversion I did for a 727.

(TFR11lh.jpg)

(TFOTFR11 exp view01.jpg)

(TFR11lubelh.jpg)

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TFR11lh.jpg (68KB - 183 downloads)

TFOTFR11 exp view01.jpg (69KB - 197 downloads)

TFR11lubelh.jpg (80KB - 197 downloads)