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Old 04-08-2003, 06:10 PM   #1
greg montgomery
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trans. help

hey guys i'm buying a 72 4x4 with no motor or trans. but has the transfer case will a350 trans. out of a 79 truck work. thanks greg
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Old 04-09-2003, 05:44 AM   #2
JIMs70GMC
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Depends, your 72 should have a NP205 and if it was previously bolted to a TH350 and the TH350 your swapping in was also bolted to a NP205. Now if the donor TH350 was bolted to an NP203 I don't believe they are a direct swap but maybe. Anyone else?
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs
1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears
1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now.....
1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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Old 04-09-2003, 01:29 PM   #3
greg montgomery
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i'm not sure what is in the 72 yet but i do know the 79 has the full time case i believe that would be the 203 am i correct.
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Old 04-09-2003, 01:43 PM   #4
JIMs70GMC
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That's correct a NP203.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs
1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears
1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now.....
1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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Old 04-10-2003, 06:33 PM   #5
bouncytruck
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Your going to need to get the adapter for the NP203. I believe the output shafts should be the same. Advance Adapters sells them but if you can get the original, it will be cheaper. My '69 has a NP203 in it. The engine & tranny are also from a later model truck so I'm not sure if it is a direct bolt up. Get the cross member and the rods that connect the t-case to the engine too! Grim Reaper is the resident expert on 203 t-cases.
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