What transfer case is in truck? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**ScottH** · 02-09-2009, 12:00 PM

Getting a 83 Chevy lwb 4x4 that I will be parting out and I was wondering if anyone knew which transfer case came stock in this truck? It has a 700R4 auto trans and locking hubs.

Any info is appreciated.

Thanks.

Scott

Walts_restoration · 02-09-2009, 12:17 PM

if its aluminum.. id say an np208.

**ScottH** · 02-09-2009, 12:34 PM

Thanks Walt.

I had a 79 K10 a while back, that had constant 4 wheel drive which used a NP208. This one has the locking hubs so it's not constant (my understanding).

thirdstreettito · 02-09-2009, 01:26 PM

Yeah, its an NP208.

James McClure · 02-09-2009, 02:30 PM

I don't doubt these gentelmen, but you might want to duck under the truck and look at the tag on the back of the transfer case, it has the number right out in plain sight. No telling what one of the PO's did to it. jim

**ScottH** · 02-09-2009, 02:33 PM

thanks guys, I'll check it out

Russell · 02-09-2009, 03:00 PM

The old full time 4x4 truck would have had an NP203 in it. Most 81+ trucks have a 208 in them, but the odd unit still had a 205

Walts_restoration · 02-09-2009, 04:12 PM

im pretty sure the 203s were full time, and the 208s were part time. 205s and 208s are similar, except the 208s are aluminum and a slightly lower gear.

**ScottH** · 02-09-2009, 04:44 PM

Sorry, must have gotten them mixed up. But that's why I asked u guys that know this stuff. Not familiar with 4x4s.....obviously, lol.

thanks again.

84 400 · 02-09-2009, 07:23 PM

Should be a Np 208. Should be but u never know what someone could have done before you. Odds are Np208 tho. And the 4x4 full time would have been an Np203.

Hoods69BadBowTie · 02-09-2009, 08:41 PM

Quote:

Originally Posted by 84 400

Should be a Np 208. Should be but u never know what someone could have done before you. Odds are Np208 tho. And the 4x4 full time would have been an Np203.

Ya x2. I would defiantly just crawl under it and double check to make sure.

charlie diaz · 02-09-2009, 08:48 PM

I hope I'm not stealing a thread here, but I believe the 208's and 203's are both a chain driven xfer case, and the 205 is the only one that is gear driven.

Walts_restoration · 02-09-2009, 11:00 PM

pretty sure the 208s are gear driven like the 205s, but i could be wrong. lol

pig rig · 02-09-2009, 11:55 PM

here's the np208

and here's the np205

Dooley · 02-10-2009, 01:00 AM

Quote:

Originally Posted by Russell

The old full time 4x4 truck would have had an NP203 in it. Most 81+ trucks have a 208 in them, but the odd unit still had a 205

My 1988 V30 2 dr regular cab pickup has a factory 205 transfer case.

383k5 · 02-10-2009, 01:59 PM

It WILL be a 208, unless the previous owner swapped it out.

The 208 is an aluminum chain driven case with a 2.61 low

205 is cast Iron gear to gear with a 1.91? low

203 is full time, cast iron, gear to gear case. These are convertable to part time though

A 241 is the same as a 208, slightly stronger chain, and a 2.71 low gear

The only trucks to get a 205 instead of the 208/241 were one tons. The 241 started in 89? With a mechanical speedo, then in 90 it went to a Speed sensor.

84 400 · 02-10-2009, 09:20 PM

Quote:

Originally Posted by 383k5

It WILL be a 208, unless the previous owner swapped it out.

The 208 is an aluminum chain driven case with a 2.61 low

205 is cast Iron gear to gear with a 1.91? low

203 is full time, cast iron, gear to gear case. These are convertable to part time though

A 241 is the same as a 208, slightly stronger chain, and a 2.71 low gear

The only trucks to get a 205 instead of the 208/241 were one tons. The 241 started in 89? With a mechanical speedo, then in 90 it went to a Speed sensor.

Just to be Clear the NP 203 full time is NOT gear to gear it is a chain driven unit with a differential section. I know most 205's where left in 1 tons or used behind the sm465 manual trans (in the earlier modle years).

**crossy** · 02-12-2009, 12:11 AM

just to be sure, there is USUALLY a rouond red tag on it covered in ???? that has the number stamped right in it. it should be stamped 208C. the better 241C was a direct swap, but rare in the manual speedo style and generally found only in an 89 Burb or blazer. BUT like i always tell people about these old GM trucks. Ther is nothing i have not seen changed to the wrong thing:-), crossy

**ScottH** · 02-12-2009, 11:20 AM

Thanks for everyones help, some great info. I got the truck last night so I'll check it out when I get a chance. BTW you'll be seeing it on the parts board soon.

mrmojo32 · 02-22-2009, 10:26 PM

Yep Crossy... You are right on. I have a 1989 GMC Jimmy with the 350-sm465-NP241c....I just changed it out for a new one and it indeed had a gear speedometer.

WHat I can't find is the bar that bolts to the side of the transfer case and with an automatic would bolt to the bell housing. I really don't know where it bolts to on a SM465 but I was told that the reason why mine cracked is because I did not have that installed.

Russell · 02-23-2009, 02:22 PM

I am personally of the believe that those torque bars break more stuff than they protect. If you want to brace the t-case, it needs to be linked to the frame to take up some of the weight from the adapter.

02-09-2009, 12:00 PM	#1
ScottH Senior Member Join Date: Sep 2002 Location: Hampstead, NC Posts: 8,190	What transfer case is in truck? Getting a 83 Chevy lwb 4x4 that I will be parting out and I was wondering if anyone knew which transfer case came stock in this truck? It has a 700R4 auto trans and locking hubs. Any info is appreciated. Thanks. Scott __________________ 1963 C10 swb fleetside 1966 GMC G1000 Handi-bus (future project) 1955 Chevy 2 dr. wagon

02-09-2009, 12:17 PM	#2
Walts_restoration Real Projects never die Join Date: Jan 2007 Location: Lawrence, kansas Posts: 1,508	Re: What transfer case is in truck? if its aluminum.. id say an np208. __________________ Ill put it this way, ive got a few lawn ornaments My name tag says Ryan KansasTwister On other forums

02-09-2009, 12:34 PM	#3
ScottH Senior Member Join Date: Sep 2002 Location: Hampstead, NC Posts: 8,190	Re: What transfer case is in truck? Thanks Walt. I had a 79 K10 a while back, that had constant 4 wheel drive which used a NP208. This one has the locking hubs so it's not constant (my understanding). __________________ 1963 C10 swb fleetside 1966 GMC G1000 Handi-bus (future project) 1955 Chevy 2 dr. wagon

02-09-2009, 01:26 PM	#4
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: What transfer case is in truck? Yeah, its an NP208. __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

02-09-2009, 02:30 PM	#5
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: What transfer case is in truck? I don't doubt these gentelmen, but you might want to duck under the truck and look at the tag on the back of the transfer case, it has the number right out in plain sight. No telling what one of the PO's did to it. jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.

02-09-2009, 02:33 PM	#6
ScottH Senior Member Join Date: Sep 2002 Location: Hampstead, NC Posts: 8,190	Re: What transfer case is in truck? thanks guys, I'll check it out __________________ 1963 C10 swb fleetside 1966 GMC G1000 Handi-bus (future project) 1955 Chevy 2 dr. wagon

02-09-2009, 03:00 PM	#7
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: What transfer case is in truck? The old full time 4x4 truck would have had an NP203 in it. Most 81+ trucks have a 208 in them, but the odd unit still had a 205 __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

02-09-2009, 04:12 PM	#8
Walts_restoration Real Projects never die Join Date: Jan 2007 Location: Lawrence, kansas Posts: 1,508	Re: What transfer case is in truck? im pretty sure the 203s were full time, and the 208s were part time. 205s and 208s are similar, except the 208s are aluminum and a slightly lower gear. __________________ Ill put it this way, ive got a few lawn ornaments My name tag says Ryan KansasTwister On other forums

02-09-2009, 04:44 PM	#9
ScottH Senior Member Join Date: Sep 2002 Location: Hampstead, NC Posts: 8,190	Re: What transfer case is in truck? Sorry, must have gotten them mixed up. But that's why I asked u guys that know this stuff. Not familiar with 4x4s.....obviously, lol. thanks again. __________________ 1963 C10 swb fleetside 1966 GMC G1000 Handi-bus (future project) 1955 Chevy 2 dr. wagon

02-09-2009, 07:23 PM	#10
84 400 Sb 400 club Join Date: Nov 2005 Location: NH / MA Posts: 2,746	Re: What transfer case is in truck? Should be a Np 208. Should be but u never know what someone could have done before you. Odds are Np208 tho. And the 4x4 full time would have been an Np203. __________________ 1984 chevy c10, built 400sb,.(SOLD) 77 K10 Project / daily driver "The Grinch" http://67-72chevytrucks.com/vboard/s...d.php?t=318363 1956 Willys Wagon (327 chevy) Project (Now Buick 225) 1980 Corvette L-48 4 speed 1992 Mustang GT built 5.0 5 speed 1985 C10 LWB Sold 1982 K10 SWB plow truck Parted out 1986 D30 M1028 fire brush truck Parted out

02-09-2009, 08:48 PM	#12
charlie diaz Registered User Join Date: May 2005 Location: Colorado Posts: 138	Re: What transfer case is in truck? I hope I'm not stealing a thread here, but I believe the 208's and 203's are both a chain driven xfer case, and the 205 is the only one that is gear driven.

02-09-2009, 11:00 PM	#13
Walts_restoration Real Projects never die Join Date: Jan 2007 Location: Lawrence, kansas Posts: 1,508	Re: What transfer case is in truck? pretty sure the 208s are gear driven like the 205s, but i could be wrong. lol __________________ Ill put it this way, ive got a few lawn ornaments My name tag says Ryan KansasTwister On other forums

02-09-2009, 11:55 PM	#14
pig rig Registered User Join Date: Feb 2009 Location: washington the state Posts: 730	Re: What transfer case is in truck? here's the np208 and here's the np205 __________________ my sports car rolls on six wheels only because I'm to fat to get in and out of new corvette http://hubgarage.s3.amazonaws.com/ph...ped_detail.JPG

02-10-2009, 01:59 PM	#16
383k5 Registered User Join Date: Feb 2009 Location: Chuluota Fl Posts: 14	Re: What transfer case is in truck? It WILL be a 208, unless the previous owner swapped it out. The 208 is an aluminum chain driven case with a 2.61 low 205 is cast Iron gear to gear with a 1.91? low 203 is full time, cast iron, gear to gear case. These are convertable to part time though A 241 is the same as a 208, slightly stronger chain, and a 2.71 low gear The only trucks to get a 205 instead of the 208/241 were one tons. The 241 started in 89? With a mechanical speedo, then in 90 it went to a Speed sensor. __________________ 84383/465/208 D44/14b Detroits, 4 wheels discs, 8" front, 6" rear, 37" Irok Radials 96 ranger 4cylinder with the flowmaster. It's my race truck 64 C10...random pieces strew about. Last edited by 383k5; 02-10-2009 at 02:00 PM.

02-12-2009, 12:11 AM	#18
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: What transfer case is in truck? just to be sure, there is USUALLY a rouond red tag on it covered in ???? that has the number stamped right in it. it should be stamped 208C. the better 241C was a direct swap, but rare in the manual speedo style and generally found only in an 89 Burb or blazer. BUT like i always tell people about these old GM trucks. Ther is nothing i have not seen changed to the wrong thing:-), crossy __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.



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02-12-2009, 11:20 AM	#19
ScottH Senior Member Join Date: Sep 2002 Location: Hampstead, NC Posts: 8,190	Re: What transfer case is in truck? Thanks for everyones help, some great info. I got the truck last night so I'll check it out when I get a chance. BTW you'll be seeing it on the parts board soon. __________________ 1963 C10 swb fleetside 1966 GMC G1000 Handi-bus (future project) 1955 Chevy 2 dr. wagon

02-22-2009, 10:26 PM	#20
mrmojo32 Registered User Join Date: Jan 2007 Location: Louisiana Posts: 216	Re: What transfer case is in truck? Yep Crossy... You are right on. I have a 1989 GMC Jimmy with the 350-sm465-NP241c....I just changed it out for a new one and it indeed had a gear speedometer. WHat I can't find is the bar that bolts to the side of the transfer case and with an automatic would bolt to the bell housing. I really don't know where it bolts to on a SM465 but I was told that the reason why mine cracked is because I did not have that installed. __________________ 1972 LWB 1969 4x4 Suburban 1989 4x4 Jimmy

02-23-2009, 02:22 PM	#21
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: What transfer case is in truck? I am personally of the believe that those torque bars break more stuff than they protect. If you want to brace the t-case, it needs to be linked to the frame to take up some of the weight from the adapter. __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

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