4 speed identification

[303 Mopar]

I need help identifying this 4 speed. Is it an OD? Anything else you can tell from the numbers?

[Cuda Cody]

Assembled 4-15-1974?

https://www.e-bodies.org/resources/mopar-chrysler-10000-day-calendar-date-code/1974-model-year-engine-trans/

[303 Mopar]

Assembled 4-15-1974?

https://www.e-bodies.org/resources/mopar-chrysler-10000-day-calendar-date-code/1974-model-year-engine-trans/

That's the date I thought too. Anyway to tell if it is an OD trans?

[b5cuda]

Usually an OD trans has aluminum case, though some early ones were steel.  The key is the input bearing retainer size; should be the large 5.125″ piece.  Regular 4-speeds use smaller input bearing/retainer.

[anlauto]

Maybe member @Dan Brewer can help ?

[Dan Brewer]

Maincase says 74, tailshaft casting number is 69 B 23 spline.  So it's been switched around at some point.  Unlikely its od, but without pulling the side cover off can't say for certain.

[anlauto]

Thank you Dan 

[303 Mopar]

Maincase says 74, tailshaft casting number is 69 B 23 spline.  So it's been switched around at some point.  Unlikely its od, but without pulling the side cover off can't say for certain.

Thank you @Dan Brewer!

[Chryco Psycho]

the other way to test it is put it into 3rd gear , if the output shaft turns faster than the input it is OD , if it is slower it is not OD