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post #1 of (permalink) Old 09-01-2002, 03:31 AM
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what is the shift pattern of my 1980 gmc 4x4 t-cas

just got a nice 1980 gmc 4x4 it has locking hubs. what is the shift pattern for the t-case, ive never had a gmc. thanks
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post #2 of (permalink) Old 09-01-2002, 04:13 AM
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

well im think'n that your truck has a np205, HD t-case, i belive it will be from bottom to top, 4lo,n,2hi,4hi, i think, look more into it.
post #3 of (permalink) Old 09-01-2002, 12:38 PM
 
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

Does your truck have an automatic or stick? These kind of things are kinda helpful... manual hubs don't tell anyone much because even the full-time case (NP-203) could have been converted by adding manual hubs and the conversion kit in the T-Case
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post #4 of (permalink) Old 09-01-2002, 01:27 PM
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

it has a tp350 auto and a 350 engine. its a swb, i do not believe it was converted, i think it has the np205 transfer case.
post #5 of (permalink) Old 09-01-2002, 02:12 PM
 
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

Crawl under it and look for the ID tag.

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post #6 of (permalink) Old 09-01-2002, 09:45 PM
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

If it's stock it should have a NP205.
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post #7 of (permalink) Old 09-04-2002, 01:14 PM
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

Yes, NP205. 4HI is by the seat. Small click forward (toward dash) to 2HI, Next click forward is neutral, and way forward toward the dash is 4LO.
post #8 of (permalink) Old 09-04-2002, 02:01 PM
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Re: what is the shift pattern of my 1980 gmc 4x4 t-cas

1980 was the only year you were guaranteed to get a NP205 in a pickup. From 81 to 87 you got a NP208 unless you were going 1-ton.
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