What t-case do I have? - Pirate4x4.Com : 4x4 and Off-Road Forum

Erich In AZ · 04-05-2002, 07:13 AM

What's the best way to ID my T-case? It's either a 203 (My 1st guess) or a 205. It came with a truck I bought, but isn't installed. I have the tranny/tcase sitting on the garage floor. I haven't been able to find any numbers on it that made sense to me. FYI it was a 76 Chevy 1/2 ton pickup with a TH350. That's why I am guessing it's a 203.

Thanks

brector · 04-05-2002, 07:27 AM

Take a pic for us. I can tell you what it is then

jhama78 · 04-05-2002, 07:53 AM

If there is a circular cover about the diameter of a coors light can on the back of the t-case that has 3 bolts in it then it is probably an np205. Have a good one.

-j-rOd

zakk · 04-05-2002, 12:53 PM

Quote:

Originally posted by erich_in_AZ
What's the best way to ID my T-case? It's either a 203 (My 1st guess) or a 205. It came with a truck I bought, but isn't installed. I have the tranny/tcase sitting on the garage floor. I haven't been able to find any numbers on it that made sense to me. FYI it was a 76 Chevy 1/2 ton pickup with a TH350. That's why I am guessing it's a 203.

Thanks

if it came out of a 76 1/2 ton with a AT, it is a NP203 if it is factory. Do you have lockable hubs? are they factory or aftermarket? this too can give clues. If you have no locakble hubs, it is FOR SURE a 203. Unless they put a P/T kit in it...

damn it, just get us some pics

Erich In AZ · 04-05-2002, 01:07 PM

Alright! Pics are coming! I gotta get home from work 1st! Damn!

It has locking hubs that appear to be factory. They look just like the ones I had in my 72 K5. I was under the impression that the 205's for a th350 were kind of hard to come by. Is that true?

zakk · 04-05-2002, 07:10 PM

usually the 205's when behind the manual tranny's and 203's behind the auto's. or atleast that is true on the K5's but i don't thik this would be different on other 1/2 tons.

Erich In AZ · 04-05-2002, 08:35 PM

I have some pics up. It has locking hubs, so if it's a 203 (which I think it is), how can I tell if it's got a part time kit. Not really sure how the shift pattern is...

http://home.earthlink.net/~ekronspri..._Rig/Tcase.htm

Thanks for the help.

onetonwillysands10 · 04-06-2002, 02:42 PM

it is a 203.

61_chevy_4x4 · 04-06-2002, 06:02 PM

203

Erich In AZ · 04-06-2002, 07:57 PM

Thanks guys! I thought that's what it was. Now all I need is a 205 so I can go with a doubler....

ranger · 04-06-2002, 09:27 PM

Definetly a NP203. If you look at the retangular tag mounted to the case, you can see it in you picture to the left of the shifter housing, it will tell you what it is.
Those are some heavy Mo fo's, and a real treat to rebuild...Needle bearings from hell!

zakk · 04-07-2002, 10:23 AM

Quote:

Originally posted by erich_in_AZ
Thanks guys! I thought that's what it was. Now all I need is a 205 so I can go with a doubler....

its a 203.

remember you need a 205 off a TH400 to run the Gen II doubler. I am sure you have seen it, but for those that haven't:

www.offroaddesign.com

If you can't find a TH400 Np205, Steven makes the kit to change it over, all parts included.

04-05-2002, 07:13 AM	#1 (permalink)
Erich In AZ Registered User Join Date: Mar 2002 Member # 10994 Location: Tucson, Az Posts: 2,926	What t-case do I have? What's the best way to ID my T-case? It's either a 203 (My 1st guess) or a 205. It came with a truck I bought, but isn't installed. I have the tranny/tcase sitting on the garage floor. I haven't been able to find any numbers on it that made sense to me. FYI it was a 76 Chevy 1/2 ton pickup with a TH350. That's why I am guessing it's a 203. Thanks

04-05-2002, 07:27 AM	#2 (permalink)
brector Registered User Join Date: Feb 2000 Member # 192 Location: Knoxvegas, TN Posts: 5,357	Take a pic for us. I can tell you what it is then __________________ -Brian 1 ton yoda I make nerd sexy

04-05-2002, 07:53 AM	#3 (permalink)
jhama78 Registered User Join Date: Feb 2001 Member # 3377 Location: Eastern Shore, Va Posts: 3,892	If there is a circular cover about the diameter of a coors light can on the back of the t-case that has 3 bolts in it then it is probably an np205. Have a good one. -j-rOd __________________ -j-rOd [COLOR="Lime"][SIZE="3"][B][URL="http://www.pirate4x4.com/forum/showthread.php?t=654042"]85 Roach Build Thread[/URL] [/SIZE][/B][/COLOR] [COLOR="Silver"][B] 84 Toy Farm Beater 85 Toy Trail Roach 223:1 85 Toy SR5 xcab DD 88 4Runner Fambly Beach Ride 07 Dodge 2500 4x4 Quad Cab, 5.9 CTD[/B][/COLOR] [B][COLOR="Lime"][SIZE="4"][FONT="Arial"]Nobody ever lays on their deathbed wishing they'd spent more time at work...[/FONT][/SIZE][/COLOR][/B]

04-05-2002, 07:10 PM	#6 (permalink)
zakk A fucking killer Join Date: Oct 2001 Member # 7334 Location: Infernal Region Posts: 2,187	usually the 205's when behind the manual tranny's and 203's behind the auto's. or atleast that is true on the K5's but i don't thik this would be different on other 1/2 tons. __________________ Fuck you Love, -zakk

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04-05-2002, 01:07 PM	#5 (permalink)
Erich In AZ Registered User Join Date: Mar 2002 Member # 10994 Location: Tucson, Az Posts: 2,926	Alright! Pics are coming! I gotta get home from work 1st! Damn! It has locking hubs that appear to be factory. They look just like the ones I had in my 72 K5. I was under the impression that the 205's for a th350 were kind of hard to come by. Is that true?

04-05-2002, 08:35 PM	#7 (permalink)
Erich In AZ Registered User Join Date: Mar 2002 Member # 10994 Location: Tucson, Az Posts: 2,926	I have some pics up. It has locking hubs, so if it's a 203 (which I think it is), how can I tell if it's got a part time kit. Not really sure how the shift pattern is... http://home.earthlink.net/~ekronspri..._Rig/Tcase.htm Thanks for the help.

04-06-2002, 02:42 PM	#8 (permalink)
onetonwillysands10 Registered User Join Date: Apr 2001 Member # 4197 Location: tennessee Posts: 1,370	it is a 203.

04-06-2002, 06:02 PM	#9 (permalink)
61_chevy_4x4 Registered User Join Date: Nov 2001 Member # 8216 Location: Virgilina, Va Posts: 240	203

04-06-2002, 07:57 PM	#10 (permalink)
Erich In AZ Registered User Join Date: Mar 2002 Member # 10994 Location: Tucson, Az Posts: 2,926	Thanks guys! I thought that's what it was. Now all I need is a 205 so I can go with a doubler....

04-06-2002, 09:27 PM	#11 (permalink)
ranger Registered User Join Date: Jul 2000 Member # 1282 Location: Boise, Idaho Posts: 4,819	Definetly a NP203. If you look at the retangular tag mounted to the case, you can see it in you picture to the left of the shifter housing, it will tell you what it is. Those are some heavy Mo fo's, and a real treat to rebuild...Needle bearings from hell!