CK5
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TH400 to a NP208

summit say that the TH350 would go up but i think its the TH400 in it now. i not much of an auto tranny guy. so i not totaly sure.
 
If the pan looks like a square with a corner cut off, it's a TH 350.

If it looks like the state (Republic????) of Texas, it's a TH 400.

Tim
'84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
 
4WD application transmissions have a different length output shaft, it isn't as long as the car trannies, be sure you get the correct one for your truck. also a 350 turbo has a 27 spline output, the 400 turbo has a 32, you will need the correct one to fit your transfer case.
 
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