What kind of Transfer case is this? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71GMCer · 04-18-2010, 02:09 PM

Hey all,

Im new to the forums so here is abit about me:

I got my 1971 GMC 4x4 as my first truck and its probably the coolest vehicle in the school parking lot. (I am 16) It has an "01" stamped 350 sbc in it and after abit of research i found that the engine would usually be seen in a Camaro or Corvette back in the day. I has a few oil leaks but im slowly patching them up (Rear main seal, Oil pan and now im told its leaking from the oil pressure sending unit and distributor gasket)

Whats your guys' stories about leaks...im sure im not the only one who had to repair some leaks.

I was just curious as to what transfer case i have in it.

Im thinkin NP 205?

The truck

71swb4x4 · 04-18-2010, 02:26 PM

Sharp truck. That looks like the back end of a NP 205 to me.

I doubt you are leaking from the distributor gasket, more then likely the oil from the oil sending unit is making it over that direction. Just start patching leaks and eventually you will get them all.

71GMCer · 04-18-2010, 02:34 PM

alright thanks! Are Np 205s fairly good?

mbgmike · 04-18-2010, 02:34 PM

np205

71swb4x4 · 04-18-2010, 02:41 PM

NP 205's are one of the best transfer cases ever made.

71GMCer · 04-18-2010, 02:49 PM

ah right on...im hoping my truck will last a long time because i absolutely love it. Its got a 4 speed standard tranny, dual glasspack exhausts (no headers, just straight pipes) and the amazing 350 sbc.

Can anyone tell me about that "01" stamp i found? And what kind of diff. would it have? LSD or an Open Diff?

Matt

**71blksuper4x4** · 04-18-2010, 03:31 PM

Where was the 01 stamp? That sounds like you may have seen the numbers cast on the side of the block. Like Nickel contents or something. Your numbers that tell you what it is are on the front of the passenger head pad under the a/c if your truck has it. Also, when it was built and what block it is, will be on the back side of the engine behind the distributor. Trevor

71GMCer · 04-18-2010, 03:36 PM

The 01 stamp was where the bolt holes are for the oil pan and abit farther up towards the top of the block

basemodel67 · 04-18-2010, 03:42 PM

Yup, best case ever put in these trucks. Gear driven and beefy.

**71blksuper4x4** · 04-18-2010, 03:53 PM

yeah, just about any small block could have had 01 stamped in it. You need the other numbers I was telling you about to decipher it. Mainly, the rear motor cast number which should start with a 39*******. A good 350 should end with the last three numbers 010. Trevor

mbgmike · 04-19-2010, 11:11 AM

I have a free one that works if anyone wants one

dukkie · 04-19-2010, 11:37 AM

Yup Yup Np 205

04-18-2010, 02:09 PM	#1
71GMCer Registered User Join Date: Apr 2010 Location: Kelowna, Canada Posts: 116	What kind of Transfer case is this? Hey all, Im new to the forums so here is abit about me: I got my 1971 GMC 4x4 as my first truck and its probably the coolest vehicle in the school parking lot. (I am 16) It has an "01" stamped 350 sbc in it and after abit of research i found that the engine would usually be seen in a Camaro or Corvette back in the day. I has a few oil leaks but im slowly patching them up (Rear main seal, Oil pan and now im told its leaking from the oil pressure sending unit and distributor gasket) Whats your guys' stories about leaks...im sure im not the only one who had to repair some leaks. I was just curious as to what transfer case i have in it. Im thinkin NP 205? The truck

04-18-2010, 02:26 PM	#2
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: What kind of Transfer case is this? Sharp truck. That looks like the back end of a NP 205 to me. I doubt you are leaking from the distributor gasket, more then likely the oil from the oil sending unit is making it over that direction. Just start patching leaks and eventually you will get them all. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

04-18-2010, 02:34 PM	#3
71GMCer Registered User Join Date: Apr 2010 Location: Kelowna, Canada Posts: 116	Re: What kind of Transfer case is this? alright thanks! Are Np 205s fairly good?

04-18-2010, 02:34 PM	#4
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: What kind of Transfer case is this? np205

04-18-2010, 02:41 PM	#5
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: What kind of Transfer case is this? NP 205's are one of the best transfer cases ever made. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

04-18-2010, 02:49 PM	#6
71GMCer Registered User Join Date: Apr 2010 Location: Kelowna, Canada Posts: 116	Re: What kind of Transfer case is this? ah right on...im hoping my truck will last a long time because i absolutely love it. Its got a 4 speed standard tranny, dual glasspack exhausts (no headers, just straight pipes) and the amazing 350 sbc. Can anyone tell me about that "01" stamp i found? And what kind of diff. would it have? LSD or an Open Diff? Matt Last edited by 71GMCer; 04-18-2010 at 02:57 PM.

04-18-2010, 03:31 PM	#7
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,151	Re: What kind of Transfer case is this? Where was the 01 stamp? That sounds like you may have seen the numbers cast on the side of the block. Like Nickel contents or something. Your numbers that tell you what it is are on the front of the passenger head pad under the a/c if your truck has it. Also, when it was built and what block it is, will be on the back side of the engine behind the distributor. Trevor __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

04-18-2010, 03:36 PM	#8
71GMCer Registered User Join Date: Apr 2010 Location: Kelowna, Canada Posts: 116	Re: What kind of Transfer case is this? The 01 stamp was where the bolt holes are for the oil pan and abit farther up towards the top of the block

04-18-2010, 03:42 PM	#9
basemodel67 Factory Strippers Rule! Join Date: Mar 2009 Location: Shingle Springs, CA Posts: 707	Re: What kind of Transfer case is this? Yup, best case ever put in these trucks. Gear driven and beefy. __________________ "Feast your eyes on a feast of smoke." 67 Chevy Short Fleet PLAN: LQ9, 4L60, D60 Looking for School Bus Gauges - Help me out!

04-18-2010, 03:53 PM	#10
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,151	Re: What kind of Transfer case is this? yeah, just about any small block could have had 01 stamped in it. You need the other numbers I was telling you about to decipher it. Mainly, the rear motor cast number which should start with a 39*******. A good 350 should end with the last three numbers 010. Trevor __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

04-19-2010, 11:11 AM	#11
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: What kind of Transfer case is this? I have a free one that works if anyone wants one

04-19-2010, 11:37 AM	#12
dukkie My Spoon Is Too Big Join Date: Mar 2010 Location: Magnolia Tx Posts: 457	Re: What kind of Transfer case is this? Yup Yup Np 205 Attached Images __________________ 1972 C20, 03-14-10 Build Thread 2000 Silverado 4.8L, 11-04-13 (Currently Parting) 1999 Silverado 5.3L, 07-07-14. (Engine Donor) 2015 Ram 05-20-15 (Daily Driver)



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.