Identifying and questions - Pirate4x4.Com : 4x4 and Off-Road Forum

chevyforlife502 · 05-13-2009, 03:44 AM

I have a few thing i need help with. I just need some help identifying my T case, and how hard are they to inspect and work on yourself. I am a mechanic inclined person also my brother is a 5 year now diesel mechanic. Also weather my axle is a 10 bolt or a dana 44. And the last thing is that do I need special tools to or feller gages to rebuild my Th350. Thanks for your help here are some pictures

GreatWhiteXJ · 05-13-2009, 06:18 AM

T-Case is a NP203 I think...axle is a 10bolt.

KWTMECH · 05-13-2009, 07:41 AM

Quote:

Originally Posted by GreatWhiteXJ

T-Case is a NP203 I think...axle is a 10bolt.

You got it right

mudskipper4x4 · 05-13-2009, 09:23 AM

Yeah you can wheel that 203 but once it gives you problems I would suggest swapping it out with a 205 before you put any money into it.

Im not sure about the feeler gauges or special tools for the th350 as I've never rebuilt one but maybe someone will chime in.

chevyforlife502 · 05-13-2009, 12:02 PM

Thanks guy thought i was a 10 bolt. Why would i be better with the 205? How much would i cost and do i need to change anything else.

mudskipper4x4 · 05-13-2009, 12:12 PM

The 203 chain will stretch out eventually and it wont work right.

a 205 is all gear driven, so it's stronger. You can get the 205 and adapter for $150 give or take a little.

Wheel it till it breaks and then swap to a 205. That's what I'd do.

jenks21 · 05-13-2009, 12:26 PM

Well with this and your other thread. From what I think that you are doing you will be fine. The 205's are better than a 203, but it not that a 203 is completely junk. I ran one on my race truck for years without problems, plowed snow, shoved around cars...ect.

If you are just replacing the clutches and steels in your trans then you will not need any specialy tools, a little ingenuity will get you through. If you are doing a complete rebuilt, then yes you will need some specialty tools.

later
jenks

chevyforlife502 · 05-13-2009, 03:11 PM

Well i am woundering weather i should take the 203 apart cause it off my truck. My brother said he put it in grear and it poped out i am just thinking that it was in far enough. Do you think it worth taking apart or should i put her back in and try it out with new gear oil.

jenks21 · 05-13-2009, 04:24 PM

Stock transfercase shifters for these bring the suck. They wear out over time and if you don't bunge strap them in gear they pop out. They seem to be worse in four low. You can make a twin stick or get one from ord that will solve the problem.

later
jenks

chevyforlife502 · 05-14-2009, 03:26 AM

Thanks. guys i am going to look into the stick.

chevyforlife502 · 05-14-2009, 03:30 AM

Ment to ask what year and style of trucks are the 205 in? Thanks

chevyforlife502 · 05-14-2009, 07:21 PM

anyone

HAPPYJOHN · 05-15-2009, 01:29 PM

Late '70s 3/4 & 1 ton GM trucks usually, I know there are others....

trkklr77 · 05-15-2009, 02:30 PM

69-91 square body blazers, burbs and trucks.

chevyforlife502 · 05-15-2009, 04:48 PM

Thanks guys how are the 241 C T-case or is the 205 better? Also will the 205 work with my axles?

chevyforlife502 · 05-16-2009, 08:08 AM

Bump

HAPPYJOHN · 05-16-2009, 10:15 AM

Each has good&bad points; 205 is stronger, 241 has lower low range.
205 is all iron case, 241 aluminum. so it really goes back to priorities
and determining how you're REALLY going to use the truck.

HAPPYJOHN · 05-16-2009, 10:16 AM

Quote:

Originally Posted by trkklr77

69-91 square body blazers, burbs and trucks.

?? My '83 had a 208, my '89 & '90 both had 241s ( all K-5s )

mudskipper4x4 · 05-16-2009, 03:52 PM

They aren't in every truck k5 or sub from those years but they can be found throughout those years in some of those vehicles. Usually put more in the 3/4- 1 ton trucks but in 1980 all of them had np205s. fyi

chevyforlife502 · 05-16-2009, 06:50 PM

I think i would be better off with the 205 it going to be a DD trail little rock and mud truck. later on Dana 60 and 14ff

Valley Auto · 05-16-2009, 11:20 PM

keep the 203 that matchesyour trans and double it to a 205 for the pimp setup. offraod designs pionered this setup

trkklr77 · 05-17-2009, 10:49 PM

Quote:

Originally Posted by HAPPYJOHN

?? My '83 had a 208, my '89 & '90 both had 241s ( all K-5s )

so, i have a 78 with power windows and a pull cable hood latch, not every vehicle was equiped the same.

chevyforlife502 · 05-18-2009, 05:10 AM

Quote:

Originally Posted by Valley Auto

keep the 203 that matchesyour trans and double it to a 205 for the pimp setup. offraod designs pionered this setup

What the point of doubling them up I see a lot of guys do this.

jenks21 · 05-18-2009, 06:17 PM

Give's more gear selection. I believe, and know that I am wrong, but i think it would give you around 4:1 low if you had both cases in low range. The crawler guys could give you a little more insight than I can.

later
jenks

mudskipper4x4 · 05-18-2009, 07:46 PM

^^yup pretty much, gives you a 1:1, 2:1, and 4:1 gear selection. Just helps with the crawl ratio.

05-13-2009, 03:44 AM	#1 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Identifying and questions I have a few thing i need help with. I just need some help identifying my T case, and how hard are they to inspect and work on yourself. I am a mechanic inclined person also my brother is a 5 year now diesel mechanic. Also weather my axle is a 10 bolt or a dana 44. And the last thing is that do I need special tools to or feller gages to rebuild my Th350. Thanks for your help here are some pictures __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-13-2009, 06:18 AM	#2 (permalink)
GreatWhiteXJ Registered User Join Date: Nov 2007 Member # 103442 Location: Northern Crawlorado Posts: 2,660	T-Case is a NP203 I think...axle is a 10bolt. __________________ XJ on 42's

05-13-2009, 09:23 AM	#4 (permalink)
mudskipper4x4 AllUpInYourFace Join Date: May 2006 Member # 72951 Location: in a van down by the river Posts: 1,629	Yeah you can wheel that 203 but once it gives you problems I would suggest swapping it out with a 205 before you put any money into it. Im not sure about the feeler gauges or special tools for the th350 as I've never rebuilt one but maybe someone will chime in. __________________ 76 CJ-7... mostly chevy parts www.centexoffroad.com

05-13-2009, 12:02 PM	#5 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Thanks guy thought i was a 10 bolt. Why would i be better with the 205? How much would i cost and do i need to change anything else. __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-13-2009, 12:12 PM	#6 (permalink)
mudskipper4x4 AllUpInYourFace Join Date: May 2006 Member # 72951 Location: in a van down by the river Posts: 1,629	The 203 chain will stretch out eventually and it wont work right. a 205 is all gear driven, so it's stronger. You can get the 205 and adapter for $150 give or take a little. Wheel it till it breaks and then swap to a 205. That's what I'd do. __________________ 76 CJ-7... mostly chevy parts www.centexoffroad.com

05-13-2009, 12:26 PM	#7 (permalink)
jenks21 Registered User Join Date: Jan 2008 Member # 106427 Location: Central Illinois Posts: 386	Well with this and your other thread. From what I think that you are doing you will be fine. The 205's are better than a 203, but it not that a 203 is completely junk. I ran one on my race truck for years without problems, plowed snow, shoved around cars...ect. If you are just replacing the clutches and steels in your trans then you will not need any specialy tools, a little ingenuity will get you through. If you are doing a complete rebuilt, then yes you will need some specialty tools. later jenks

05-13-2009, 03:11 PM	#8 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Well i am woundering weather i should take the 203 apart cause it off my truck. My brother said he put it in grear and it poped out i am just thinking that it was in far enough. Do you think it worth taking apart or should i put her back in and try it out with new gear oil. __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-13-2009, 04:24 PM	#9 (permalink)
jenks21 Registered User Join Date: Jan 2008 Member # 106427 Location: Central Illinois Posts: 386	Stock transfercase shifters for these bring the suck. They wear out over time and if you don't bunge strap them in gear they pop out. They seem to be worse in four low. You can make a twin stick or get one from ord that will solve the problem. later jenks

05-14-2009, 03:26 AM	#10 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Thanks. guys i am going to look into the stick. __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-14-2009, 03:30 AM	#11 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Ment to ask what year and style of trucks are the 205 in? Thanks __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-14-2009, 07:21 PM	#12 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	anyone __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-15-2009, 01:29 PM	#13 (permalink)
HAPPYJOHN What did you expect? Join Date: Aug 2008 Member # 119290 Location: near the 'con, CA. Posts: 1,656	Late '70s 3/4 & 1 ton GM trucks usually, I know there are others....

05-15-2009, 02:30 PM	#14 (permalink)
trkklr77 skullfuckery Join Date: Apr 2004 Member # 29016 Location: galt ca, because i wanted my own backyard Posts: 15,206	69-91 square body blazers, burbs and trucks. __________________ Impeach or revolt, which will it be? buy my quad http://www.pirate4x4.com/forum/vehic...00-2500-a.html I WILL TRADE FOR A ROAD WORTHY 55-57 or 71-87 CHEVY 2WD PICK UP

05-15-2009, 04:48 PM	#15 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Thanks guys how are the 241 C T-case or is the 205 better? Also will the 205 work with my axles? __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-16-2009, 08:08 AM	#16 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	Bump __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-16-2009, 10:15 AM	#17 (permalink)
HAPPYJOHN What did you expect? Join Date: Aug 2008 Member # 119290 Location: near the 'con, CA. Posts: 1,656	Each has good&bad points; 205 is stronger, 241 has lower low range. 205 is all iron case, 241 aluminum. so it really goes back to priorities and determining how you're REALLY going to use the truck.

05-16-2009, 03:52 PM	#19 (permalink)
mudskipper4x4 AllUpInYourFace Join Date: May 2006 Member # 72951 Location: in a van down by the river Posts: 1,629	They aren't in every truck k5 or sub from those years but they can be found throughout those years in some of those vehicles. Usually put more in the 3/4- 1 ton trucks but in 1980 all of them had np205s. fyi __________________ 76 CJ-7... mostly chevy parts www.centexoffroad.com

05-16-2009, 06:50 PM	#20 (permalink)
chevyforlife502 Registered User Join Date: Nov 2008 Member # 123509 Location: Windsor, Canada Posts: 483 Blog Entries: 1	I think i would be better off with the 205 it going to be a DD trail little rock and mud truck. later on Dana 60 and 14ff __________________ 1979 Chevy K10 4x4 soon to be 4inch lift with DANA 60 14FF, 205

05-16-2009, 11:20 PM	#21 (permalink)
Valley Auto Zeus of the Sluice Join Date: Aug 2006 Member # 78079 Location: Carmel Valley Ca Posts: 2,702	keep the 203 that matchesyour trans and double it to a 205 for the pimp setup. offraod designs pionered this setup __________________ Master of the wire Wheel! Coastal Fabrication the " best damn shop in town" Poly Performance Pacific Fabrication http://www.pacificfab.net/

05-18-2009, 06:17 PM	#24 (permalink)
jenks21 Registered User Join Date: Jan 2008 Member # 106427 Location: Central Illinois Posts: 386	Give's more gear selection. I believe, and know that I am wrong, but i think it would give you around 4:1 low if you had both cases in low range. The crawler guys could give you a little more insight than I can. later jenks

05-18-2009, 07:46 PM	#25 (permalink)
mudskipper4x4 AllUpInYourFace Join Date: May 2006 Member # 72951 Location: in a van down by the river Posts: 1,629	^^yup pretty much, gives you a 1:1, 2:1, and 4:1 gear selection. Just helps with the crawl ratio. __________________ 76 CJ-7... mostly chevy parts www.centexoffroad.com

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