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Author Topic: Transfer Case  (Read 10978 times)

Offline qboy

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Transfer Case
« on: June 21, 2008, 12:28:34 am »
I've got a 1975 GMC K15 short bed 4x4.   How can I tell if I have an NP203 or an NP205 transfer case?
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1975 K15 GMC 1/2 ton SWB 4x4 383 (stroked 350), turbo 350 tranny

Offline VileZambonie

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Re: Transfer Case
« Reply #1 on: June 21, 2008, 01:39:17 am »
What's your shift pattern? Look on the back of the transfer case for a tag. Is there an aluminum extension housing or is it all cast iron?
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline joesgarage71

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Re: Transfer Case
« Reply #2 on: June 21, 2008, 11:33:18 am »
 If it has a drain plug its a 205
If not a 203
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78' K-20 355/SM465/twin stick 205 6" on 36's
14 bolt FF/big bearing Dana 44 4.56 gears
92' GMC C-1500 454/4L80E/14 bolt

Offline blast

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Re: Transfer Case
« Reply #3 on: June 22, 2008, 10:45:28 am »
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Offline 87GMC2WD

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Re: Transfer Case
« Reply #4 on: June 22, 2008, 04:01:49 pm »
what other kind of transfer cases are there. i dont have either of those two.
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Offline VileZambonie

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Re: Transfer Case
« Reply #5 on: June 22, 2008, 09:09:40 pm »
Did you look for the tag? Take a pic
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 76_Scottsdale

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Re: Transfer Case
« Reply #6 on: June 22, 2008, 09:32:10 pm »
87GMC2WD

You may have a NP208. Check out that page to see what you have.
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1976 Scottsdale K20
350 C.I.D.
700R4
NP205
2 1/2" Lift
305/70/R16 BFG MT
True Dual 3" Flowmaster 40 Series Exhaust

Offline Blazin

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Re: Transfer Case
« Reply #7 on: June 22, 2008, 09:59:09 pm »
208s were not offered until 81, 82 ish.
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Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline Fordeatinz71

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Re: Transfer Case
« Reply #8 on: June 23, 2008, 07:44:29 am »
yes but lets remember swaps do happen...
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1991 Chevy Silverado K1500 ECSB, 350, 700R4 w/shift kit, 3.42's, exhaust work...
1983 GMC Sierra K1500 SWB-sold :(

Offline Blazin

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Re: Transfer Case
« Reply #9 on: June 23, 2008, 08:06:55 am »
Yes, but not useually a down grade!!!!! :P
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Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline 87GMC2WD

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Re: Transfer Case
« Reply #10 on: June 23, 2008, 03:18:33 pm »
well i have a 83 blazer and a 84 k20. the blazer i just got and is only a rolling chassis. that transfer case has a NP tag on it that i think says 203. the truck has no tag w/ 2hi 4hi n 4low.
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Offline Donut

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Re: Transfer Case
« Reply #11 on: June 23, 2008, 06:50:57 pm »
Is the transfer case alum or cast iron?

2hi 4hi n 4low.  that's the shift pattern, might be on the TC shifter knob.  The link Blast gave you helped me identify mine.
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'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400

Offline 87GMC2WD

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Re: Transfer Case
« Reply #12 on: June 23, 2008, 08:05:38 pm »
i looked at the tag again i think that it might be a 208. cleaned it with some brake clean and it looks more like an 8.
Blazin, you said the 208's are a downgrade. what is the difference and why are they worse.
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Offline blast

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Re: Transfer Case
« Reply #13 on: June 23, 2008, 08:28:03 pm »
here's a np208, does it look like this?

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Offline VileZambonie

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Re: Transfer Case
« Reply #14 on: June 23, 2008, 08:49:45 pm »
They're not a gear drive unit but for regular street and offroad use they're great. If you are a serious offroader not so good.
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,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10
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