Join Date: Jan 2019
Location: Sedgwick, Kansas
There are basically two valvebodies that are commonplace on the C4. One is the 'early' version used till '66, with the little and big dots, and 'drive ranges'. Little dot = Starts in 2nd, shifts to 3rd. Big dot drives normally, using 1, 2, 3. And then "L" gives you first gear and keeps it there unless you mess with the shift lever.
Later in '67, Ford realized that this design was really pretty dumb for most circumstances, and went to a Select-Shift design, where you had D (which shifted 1-2-3 automatically), 2 (for 2nd gear) and 1 (for 1st gear). This had the advantage of allowing proper engine braking on mountain roads, and holding your car in whatever gear you wanted, instead of what the transmission thought was best.
Generally, any performance oriented C4 will use the later Select-Shift valvebody, which can be retrofitted into the earlier cases without trouble.
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