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I have a very weird looking th400... it says "74 NA 11-84" on it and its oil pan is pretty less deep than other th400s that I've seen... I also realized that the torques bolt holes are different, not by size, the whole place where the bolt matches up is different, its not a rectangular thing its like a sheet of metal... Anyone know where it came from or any specifics about it?
 

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wajouba said:
I have a very weird looking th400... it says "74 NA 11-84" on it and its oil pan is pretty less deep than other th400s that I've seen... I also realized that the torques bolt holes are different, not by size, the whole place where the bolt matches up is different, its not a rectangular thing its like a sheet of metal... Anyone know where it came from or any specifics about it?
Sounds like you have one of the oddball TH400 cases. These transmissions were used in Jaguars, Rolls Royce, Holden, and other foreign cars over the years. The first letter of the two letter code will tell you the origin, but I'm afraid I don't know what "N" represents, I do know it's not the following:

A = Caddy
B = Buick
C = Chevrolet
J = Jaguar
M = Military truck (?)
O = Oldsmobile
P = Pontiac
 

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C, F: Chevrolet/GMC truck use C until 1980, then use mostly F until 1988.
More exotic brands that came with Turbo 400s.
MA: 1984-88 AM General 4WD Military Truck
FV: 1981-82 Avanti with 350 V-8; Excalibur
N: 1973-82 Checker
FE, FG: 1977-80 Ferrari (V-12)
E: 1971-78 Holden
Z: 1976-88 Jaguar
K and J: 1965-79 Jeep
EA: 1969-76 Opel Diplomat
RV: Revcon Motor Home
R: 1966-88 Rolls Royce
ET, EV: 1977-88 Volvo Truck
 
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