1957 Buick Century Dynaflow transmission interchange years?

[Guest Century57 Buick]

I am writing to ask what year Dynaflow transmissions will interchange with my 1957 Century. I can buy a transmission out of a 1958 Century but it looks longer and the main case looks larger in diameter from what I can tell from looking at the pictures on line. I have an 'AUTO INTERCHANGE SYSTEMS' 1950-65 General Motors Interchange Manual that says; Twin Turbine A&B interchange but yoke may have to be switched. A 1388896 N.A. Buick '57, - B 1388897 '58 N.A., 13895000 '59 N.A., 1389110 '60 N.A.

Under the abbreviations page there is no N.A. description, so I will assume it means, Not Applicable. I'm not really sure what transmissions will interchange after trying to read this manual. Any other places I can check?

[MrEarl]

TTT , can anyone help this guy

[Leif Holmberg]

Can`t tell what will fit, but here are the different letters that tell what year the Dynaflow will fit(bolt on).

Leif in Sweden.

Dynaflow Codes PDF.pdf

[old-tank]

My interchange manual says: "Buick 57-63 twin turbine will all bolt up to the engine, but the main difference between 57-60 and 61-63 has to do with the extension. On 57 vs 58 the (universal joint) yoke may need to be switched."

Willie

[Guest Century57 Buick]

After posting here awhile a go I've gotten an education of sorts on Dynaflow 'variable pitch, twin turbine' transmissions and Dynaflow 'flight pitch, triple turbine transmissions. I've learned the hard way that just because someone tells you they have a transmission that says Dynaflow on the side of it and it will work in your 1957 Buick Century, IT Won't, unless your Century happened to have the 'flight pitch option. Any way, live and learn!