help me identify these 4 speeds!

hey crackedback, did you figure that from the pad #? i think the ratios for it are as follows per the bbd tech pages
1964 thru 1970 B/RB engine
2.66:1
1.91:1
1.39:1
1:1

Those should be the ratios.

Yes I figured out what model it came from based on the 0A number.