Stop in for a cup of coffee

Did they usually have 727s??

I didn't pay attention when I was under the car but i assumed it was a 904 with a 318??

Its not the pushbutton because I think that was all over by 66. And it had the lever action
Yeah push button died in 64. Which is sad because by then, the push buttons were figured out and nearly bullet proof.

as for what it may be, you’re gonna have to look to be sure. Even in C bodies, you could find yourself with the 904. Normally, the heavy duty 727 was standard, but it could be ordered with the light duty 904 in just about any platform. Some people did it to save a few bucks.
My 61 had a cast iron 727. Had a parking brake on the drive shaft.....
yep. Rare

I bet this is a 727, being a c body.

Has an 8.75 rear
means little really. 8.75 were standard on B and C bodies. Transmission type didn’t matter. Just look at the pan. Pretty easy to tell from that