Help ID my T-case? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Psycho71 · 07-31-2010, 05:52 PM

My transfer case out of an '85 3/4 ton brub. Date stamps all read 84&85, so I'm thinking it's original. But it does have excess amounts of gasket sealer in places, so I'm guessing it's been into.

Found two large casting numbers. First is C-15085, second one is C-15164. Don't remember right off which one is on the front of the t-case and which was on the rear, but they were each on a different half of the case.

It does have "NP" in a couple of places. but no obvious "203, 205, or 208" on it anywhere.

Thanks for any help. If this doesn't get it, then I'll take and post some pics of it.

Psycho71 · 07-31-2010, 06:07 PM

OK, well I found the ID tag, didn't know it would be on a tag. But I scraped the black paint off and found the 208C on it.

So now that's figured out..Anything particular I should know about this case? Any unusual weaknesses? Is it a POS or a decent transfer case?

It's mated to a TH400 transmission if that makes any difference.

Thanks,
Jay

Fursphere · 07-31-2010, 08:22 PM

Without splitting the case, there isn't much you can tell about the condition its in.

bikes&bowties · 07-31-2010, 08:24 PM

not a pos but its nothing like an np205.. aluminum and chain driven

Ratpowerd67 · 08-06-2010, 09:37 PM

i run 44s with a sm465 and a 208 and abuse the crap out of it. ive busted 3 cases, but after that i custom made a heavy bracket that bolts to the side of my 4speed and then to the side of my 208. ever sence then,,,no breakage....the bouncing leaverage in the mud pits where snaping the cases in half.

Psycho71 · 08-07-2010, 11:13 AM

Do you have any pics of the bracket you made. I'd be curious to see it so I might could imitate it somehow.

Thanks

iroc12valve · 08-14-2010, 10:08 PM

Keep in mind that th400/np208 is the same drivetrain the US Army used on all M1008.

Hoods69BadBowTie · 08-18-2010, 06:23 PM

Yea they aren't a bad tcase. I would be interested in seeing some pics of that bracket as well Rat if you have any that would be sweet!

Ratpowerd67 · 08-19-2010, 08:39 PM

i almost forgot to post, the truck is dirty....sorry

Ratpowerd67 · 08-19-2010, 08:42 PM

oops, the third pic is wrong....oh well

07-31-2010, 05:52 PM	#1
Psycho71 Registered User Join Date: Jan 2006 Location: Kaufman, Tx Posts: 827	Help ID my T-case? My transfer case out of an '85 3/4 ton brub. Date stamps all read 84&85, so I'm thinking it's original. But it does have excess amounts of gasket sealer in places, so I'm guessing it's been into. Found two large casting numbers. First is C-15085, second one is C-15164. Don't remember right off which one is on the front of the t-case and which was on the rear, but they were each on a different half of the case. It does have "NP" in a couple of places. but no obvious "203, 205, or 208" on it anywhere. Thanks for any help. If this doesn't get it, then I'll take and post some pics of it. __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels! Last edited by Psycho71; 07-31-2010 at 05:53 PM.

07-31-2010, 06:07 PM	#2
Psycho71 Registered User Join Date: Jan 2006 Location: Kaufman, Tx Posts: 827	Re: Help ID my T-case? OK, well I found the ID tag, didn't know it would be on a tag. But I scraped the black paint off and found the 208C on it. So now that's figured out..Anything particular I should know about this case? Any unusual weaknesses? Is it a POS or a decent transfer case? It's mated to a TH400 transmission if that makes any difference. Thanks, Jay __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels!

07-31-2010, 08:22 PM	#3
Fursphere Registered User Join Date: Nov 2009 Location: Rancho Cordova, CA Posts: 54	Re: Help ID my T-case? Without splitting the case, there isn't much you can tell about the condition its in. __________________ 1966 C10 Panel (3/4 Ton 4x4 Conversion) 2001 K1500 Silverado Last edited by Fursphere; 07-31-2010 at 08:27 PM.

07-31-2010, 08:24 PM	#4
bikes&bowties Registered User Join Date: May 2009 Location: Washington Posts: 663	Re: Help ID my T-case? not a pos but its nothing like an np205.. aluminum and chain driven

08-06-2010, 09:37 PM	#5
Ratpowerd67 Registered User Join Date: Aug 2002 Location: Trenton ,Texas Posts: 328	Re: Help ID my T-case? i run 44s with a sm465 and a 208 and abuse the crap out of it. ive busted 3 cases, but after that i custom made a heavy bracket that bolts to the side of my 4speed and then to the side of my 208. ever sence then,,,no breakage....the bouncing leaverage in the mud pits where snaping the cases in half.

08-07-2010, 11:13 AM	#6
Psycho71 Registered User Join Date: Jan 2006 Location: Kaufman, Tx Posts: 827	Re: Help ID my T-case? Do you have any pics of the bracket you made. I'd be curious to see it so I might could imitate it somehow. Thanks __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels!

08-14-2010, 10:08 PM	#7
iroc12valve Registered User Join Date: Jun 2010 Location: niagara, ontario Posts: 109	Re: Help ID my T-case? Keep in mind that th400/np208 is the same drivetrain the US Army used on all M1008. __________________ 1991 V3500 350TBI/4l80/205 D60/14bff - Crew long 1987 IrocZ-28 525 horse/567 Lb Tq 383 1976 K30 on 39.5s One wheel drive thanks to a np203 and some K5's lol

08-18-2010, 06:23 PM	#8
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: Help ID my T-case? Yea they aren't a bad tcase. I would be interested in seeing some pics of that bracket as well Rat if you have any that would be sweet! __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

08-19-2010, 08:39 PM	#9
Ratpowerd67 Registered User Join Date: Aug 2002 Location: Trenton ,Texas Posts: 328	Re: Help ID my T-case? i almost forgot to post, the truck is dirty....sorry Attached Images Last edited by Ratpowerd67; 08-19-2010 at 08:41 PM.

08-19-2010, 08:42 PM	#10
Ratpowerd67 Registered User Join Date: Aug 2002 Location: Trenton ,Texas Posts: 328	Re: Help ID my T-case? oops, the third pic is wrong....oh well



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