Here are some interesting A833 things I found on the net. Seems fairly accurate
Year Platform Change
1964 A introduced for 273cid V8s and 225cid slant sixes with 3.09 first gear set.
1964 B/C introduced for big block applications.
1966 A discontinued for slant six applications.
1966 A/B/C Slip yoke output shaft adopted.
1966 A/B/C speedo cable form factor change.
1966 A/B/C Hurst shifters replaced by cheaper Inland shifters.
1966 B/C 30 spline output shaft adopted for all B/C-body A-833s (same as 727)
1966 A 26 spline output shaft adopted for all A-body A-833s (same as 904).
1967 A 30 spline output shaft adopted for 383cid A-body applications.
1966 A/B/C Inland shifters replaced by superior Hurst shifters.
1968 A 30 spline output shaft adopted for all A-body A-833s.
1968 A/B/C VIN plate provision added to pass. side of main case.
1968 A 307 rear bearing adopted.
1968 B/C larger 4.80 in. IBR used with 23 spline 383 applications.
1969 C C-body A-833 application discontinued.
1970 A/B/E synchronizer ring stype change.
1970 A/B/E detent ball interlock replaced by lever design.
1970 B/E 308 rear bearing adopted.
1970 B/E rear mount position moved forward to allow for a single B/E crossmember.
1971 B introduced for 340cid B-body applications.
1971 B/E 18 spline units installed in 383 applications.
1973 B/E 18 spline input discontinued.
1975 A/B non OD A-833s discontinued.
1975 A OD A-833 introduced for A-bodies, later available in D-100s and F-bodies.
Year and Application 1st 2nd 3rd 4th
1964-1966 6cyl, V8 A-bodies, some 70s 318 3.09 1.92 1.40 1.00
64-70 B/C/E-bodies, 67-70 A-bodies, early 66 2.66 1.91 1.39 1.00
Hemi
66-70 hemi and some 440s 2.65 1.93 1.39 1.00
some 70 model 2.47 1.91 1.39 1.00
70 6bbl-340s, HP applications of B and E
bodies incl. 340, 400, and 440s. 2.44 1.77 1.34 1.00
75-79 overdrive A and F bodies 75-87
overdrive trucks and vans. 3.09 1.67 1.00 0.73
