In the recent thread Question About D32 vs D34 on Fender Tags the varying use of transmission codes was raised. A worthy subject for this thread as well.
What was stable in the relevant period, ie. from 1969 when the one-letter-and-two-digits codes were introduced until the end of C-body production, is the meaning of sales code D34: "TorqueFlite 3-Speed Automatic Tranmsmission", as opposed to 3- and 4-speed manual transmissions. A good example is this 1969 Salesman's Pocket Guide information: no matter which variant of the TorqueFlite is meant, it invariably gets generically coded as "D34".
What changed was the information contained in the 1969 and up Broadcast Sheet. Codes for the transmission occur in two sections: the "Basic Car" section (the upper two lines) and the "Build" section where the part numbers go. The sales code goes in the Basic Car section:
Between 1972 (possibly already from the end of 1971) and 1975 the transmission slot in the Basic Car section holds generic sales code D34 in order to distinguish a 3-speed automatic from other types of transmissions. In 1976 however, that slot holds a specific sales code for one of the TorqueFlites (A904, A998, A999 or A727), just like it did in 1969-71:
This change-over probably lead to confusion, which was countered by having two slots in the Basic Car section in 1977 and up sheets. The first slot holds the generic TorqueFlite sales code D34 and the second slot a sales code for a specific TorqueFlite:
For not too early C-bodies (I'm sorry, I don't know Fuselage C-bodies well enough) one would expect a code for the A727. Only the specific code for an A727 TorqueFlite was not always the same. For instance, checking the part numbers for TorqueFlite transmissions reveals that in 1970 sales code D32 is associated with a 440-engine, standard or high-performance 727. By 1976 that combination is covered by D36.
This explains the vagaries observed in the use of codes D32, D34 and D36 on 1969-77 C-body tags. Well, almost explains. Why this hopping around between generic and specific sales codes in the broadcast sheets?
What was stable in the relevant period, ie. from 1969 when the one-letter-and-two-digits codes were introduced until the end of C-body production, is the meaning of sales code D34: "TorqueFlite 3-Speed Automatic Tranmsmission", as opposed to 3- and 4-speed manual transmissions. A good example is this 1969 Salesman's Pocket Guide information: no matter which variant of the TorqueFlite is meant, it invariably gets generically coded as "D34".
What changed was the information contained in the 1969 and up Broadcast Sheet. Codes for the transmission occur in two sections: the "Basic Car" section (the upper two lines) and the "Build" section where the part numbers go. The sales code goes in the Basic Car section:
Between 1972 (possibly already from the end of 1971) and 1975 the transmission slot in the Basic Car section holds generic sales code D34 in order to distinguish a 3-speed automatic from other types of transmissions. In 1976 however, that slot holds a specific sales code for one of the TorqueFlites (A904, A998, A999 or A727), just like it did in 1969-71:
This change-over probably lead to confusion, which was countered by having two slots in the Basic Car section in 1977 and up sheets. The first slot holds the generic TorqueFlite sales code D34 and the second slot a sales code for a specific TorqueFlite:
For not too early C-bodies (I'm sorry, I don't know Fuselage C-bodies well enough) one would expect a code for the A727. Only the specific code for an A727 TorqueFlite was not always the same. For instance, checking the part numbers for TorqueFlite transmissions reveals that in 1970 sales code D32 is associated with a 440-engine, standard or high-performance 727. By 1976 that combination is covered by D36.
This explains the vagaries observed in the use of codes D32, D34 and D36 on 1969-77 C-body tags. Well, almost explains. Why this hopping around between generic and specific sales codes in the broadcast sheets?
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