transfer id - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TWOKEELYA · 11-05-2005, 10:55 PM

At the risk of sounding dum, how do you identify the transfer case modle?

Richard

**kwmech** · 11-06-2005, 01:14 AM

usually by year and application to start, how about more info.

69TowRig · 11-06-2005, 02:59 AM

The Spicer 20 and NP205 were both pretty common. I know the Spicer has stampings on the rear of the case, because mine has them. There was also a heavy-duty Rockwell case from what I understand.

Blazer1970 · 11-06-2005, 08:46 AM

Spicer model 20s were only used in Blazers, not pickups.

TWOKEELYA · 11-06-2005, 11:34 AM

It is a Frankenstein truck, c10 with c20 running gear. origionally short bed with long, ect. ect. ect. It has a 350 crate with chrome valve covers that I want to get rid of and replace with stock chevy ones if anyone is interested.

Richard

*FormerMember* · 11-06-2005, 12:12 PM

Well, that would be a start of confusion there...

What year C10? I thought they were all 2wd? (although I've heard some of the early K's were called C's)

TWOKEELYA · 11-06-2005, 01:25 PM

The P.O. turned it into a c20. It is a 68, I have no idea what year the running gear is out of, and that is where my confusion begins. I can't figure out what gear the transfer is in, there is no shift pattern on the shifter except for a picture of 4 tires and a drive train. The 205 and 208 have completely different gear positions. I have a severe vibration at 45mph that seems to be coming from the drive train.

I swear will never buy a another truck off ebay again!

Richard

**Richard** · 11-07-2005, 12:58 AM

Quote:

Originally Posted by TWOKEELYA

there is no shift pattern on the shifter except for a picture of 4 tires and a drive train.

Richard

If the shift knob came from the same place as the t-case I would guess it is a Full Time NP203. though it may have been converted to part time as well.

*FormerMember* · 11-06-2005, 01:37 PM

You may want to take come pictures.

He took a 2wd and converted to 4wd?

TWOKEELYA · 11-06-2005, 02:13 PM

Yes, he cut out the bosses on the rear frame for the trailing arms and welded in new ones for leafs ect. I'll snap some pics today

*FormerMember* · 11-06-2005, 02:17 PM

What did he do for the front?

**kwmech** · 11-06-2005, 03:55 PM

Definately gonna need some pics. The factory 68s could either have a rockwell 221 or a new process 205.

Rod · 11-07-2005, 12:46 AM

Thats a dana 20 aint it....so there's Rockwell T221, NP 205 and Dana 20.. thats all I can figure these came with. I've seen 69 with either Rockwell or NP...never seen a 68 yet myself.

TWOKEELYA · 11-07-2005, 11:13 AM

It has locking hubs and when I put it all the way forward, I can really feel and hear the difference, I can't drive it over 45, the vibration is too horrific, scared the bjesus out of my wife yesterday on the freeway.

Rod · 11-07-2005, 12:04 PM

http://www.chuckschevytruckpages.com/drivetrains.html

WEb page with pics iof some transfer cases....maybe your is there. Though they dont show a rockwell or dana..just a np 205 and np 203

**Yukon Jack** · 11-07-2005, 12:13 PM

Here is a pic of the Rockwell T221 that is in my 69 K20.

TWOKEELYA · 11-07-2005, 05:10 PM

Looks like the 203, actually it is a dead ringer. I havent figured out how to add photos yet, but now I must figure out why it is vibrating like a san francisco earthquake.

Richard

TWOKEELYA · 11-07-2005, 05:19 PM

After following the link on the page, i noticed that the hubs on my truck match the jc whitney conversion kit hubs. What does that mean to me? Is it a 4wd still and will the shift pattern be different? anyone ever do this conversion?

Richard

*FormerMember* · 11-07-2005, 05:26 PM

Well, if the t-case were converted, you would have a part time NP203. Should say 2wd on the shifter.

**Richard** · 11-07-2005, 11:27 PM

What no Brownie Points?

It has been a while since I messed with a FT 203 but I believe after a conversion you will have 2wd hi and 2wd lo in the standard positions and hi loc is 4wd hi, lo loc is 4wd lo. As for the vibration I would check your u-joints for wear and make sure the u-joints are "in phase" which is aligned with each other, this applys to the front and rear shafts. Also the cardigan joint in the front driveshaft may be worn. I supect that all the way forward is 4wd hi or lo and you are getting the vibration from the front shaft spinning unloaded with the hubs unlocked.

TWOKEELYA · 11-08-2005, 02:18 AM

Richard

I'll have my wife whip up a batch of brownies for you. Where do you want them shipped? The vibration continues after I shift into neutral while driving at speed, no change, so I wonder if there is a bad wheel berring or somthing. I'll take a look at the u joints and is there anyone out there that can give me a clue on how to post a picture ..."posting for dummies"

Richard

Mudder · 11-08-2005, 03:51 AM

Maybe its an out of balanced tire or the tires themselves.

A lot of your questions about posting pictures can be found in the FAQ forum.

Prerunner1982 · 11-08-2005, 02:52 PM

to attach pics from your hard drive, click new reply, then scoll down a bit until you see Attach Files, and click on Manage attachements.. another window will open, where you can browse your hard drive and attach pics.. If they are too large you may have to reside them for it to work.. and it is recommended that you keeped them smaller, it makes it hard on those of us who still have dial up.

gregbr · 11-12-2005, 02:02 AM

4wd Hi is with the shifter pulled closest to the seat, then 2wd Hi is forward 1 notch, then neutral, then 4wd Lo closest to the dash. You can test to see if the 203 has been converted to part time by putting it in the 2wd Hi position and unlocking the front hubs....if it will move in drive it is part time, if it just sits still and spins the front drive shaft it is still full time. If it's still full time you will have to leave the xfer in the 4wd Hi position or lock the front hubs. Went thru this with my 67 4wd that somebody swapped to a 203, I converted it to part time myself, it was pretty easy with the Mile Marker kit. Greg

red71cheyenne · 11-23-2005, 12:38 PM

Don't want to hijack the thread, but then does the 203 have the same shift pattern as a T-220? Thanks, Jeff.

11-05-2005, 10:55 PM	#1
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	transfer id At the risk of sounding dum, how do you identify the transfer case modle? Richard __________________ Not all who wander are lost

11-06-2005, 01:14 AM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,598	Re: transfer id usually by year and application to start, how about more info.

11-06-2005, 02:59 AM	#3
69TowRig Senior Member Join Date: Jan 2005 Location: Raleigh, NC Posts: 894	Re: transfer id The Spicer 20 and NP205 were both pretty common. I know the Spicer has stampings on the rear of the case, because mine has them. There was also a heavy-duty Rockwell case from what I understand. __________________ -Chris Building a stripper, one part at a time: 1969 K5, 307, 3spd, 3 seats, hard top. Added Pwr Discs, Pwr Steering, Aux Battery, T-case Skid, Lighted Sidemarkers, HEI, Lock-Right Diff, ECE Class IV Hitch, 32" MT/Rs. Parts to Install: Hand Throttle, Console, Tow Hooks, Dual Horns, AM-FM, Dealer Swing-Away Tire Carrier, Gas Tank Skid. Also building a 1950 Willys CJ-3A and off-roading a 2001 Nissan Frontier on 1-Ton Portals...

11-06-2005, 08:46 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: transfer id Spicer model 20s were only used in Blazers, not pickups. __________________ Tim

11-06-2005, 11:34 AM	#5
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id It is a Frankenstein truck, c10 with c20 running gear. origionally short bed with long, ect. ect. ect. It has a 350 crate with chrome valve covers that I want to get rid of and replace with stock chevy ones if anyone is interested. Richard __________________ Not all who wander are lost

11-06-2005, 12:12 PM	#6
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	Re: transfer id Well, that would be a start of confusion there... What year C10? I thought they were all 2wd? (although I've heard some of the early K's were called C's)

11-06-2005, 01:25 PM	#7
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id The P.O. turned it into a c20. It is a 68, I have no idea what year the running gear is out of, and that is where my confusion begins. I can't figure out what gear the transfer is in, there is no shift pattern on the shifter except for a picture of 4 tires and a drive train. The 205 and 208 have completely different gear positions. I have a severe vibration at 45mph that seems to be coming from the drive train. I swear will never buy a another truck off ebay again! Richard __________________ Not all who wander are lost

11-06-2005, 01:37 PM	#9
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	Re: transfer id You may want to take come pictures. He took a 2wd and converted to 4wd?

11-06-2005, 02:13 PM	#10
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id Yes, he cut out the bosses on the rear frame for the trailing arms and welded in new ones for leafs ect. I'll snap some pics today __________________ Not all who wander are lost

11-06-2005, 02:17 PM	#11
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	Re: transfer id What did he do for the front?

11-06-2005, 03:55 PM	#12
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,598	Re: transfer id Definately gonna need some pics. The factory 68s could either have a rockwell 221 or a new process 205. Last edited by kwmech; 11-06-2005 at 03:57 PM.

11-07-2005, 12:46 AM	#13
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Re: transfer id Thats a dana 20 aint it....so there's Rockwell T221, NP 205 and Dana 20.. thats all I can figure these came with. I've seen 69 with either Rockwell or NP...never seen a 68 yet myself. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. Last edited by Rod; 11-07-2005 at 12:48 AM.

11-07-2005, 11:13 AM	#14
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id It has locking hubs and when I put it all the way forward, I can really feel and hear the difference, I can't drive it over 45, the vibration is too horrific, scared the bjesus out of my wife yesterday on the freeway. __________________ Not all who wander are lost

11-07-2005, 12:04 PM	#15
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Re: transfer id http://www.chuckschevytruckpages.com/drivetrains.html WEb page with pics iof some transfer cases....maybe your is there. Though they dont show a rockwell or dana..just a np 205 and np 203 __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

11-07-2005, 12:13 PM	#16
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Re: transfer id Here is a pic of the Rockwell T221 that is in my 69 K20. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14



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11-07-2005, 05:10 PM	#17
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id Looks like the 203, actually it is a dead ringer. I havent figured out how to add photos yet, but now I must figure out why it is vibrating like a san francisco earthquake. Richard __________________ Not all who wander are lost

11-07-2005, 05:19 PM	#18
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id After following the link on the page, i noticed that the hubs on my truck match the jc whitney conversion kit hubs. What does that mean to me? Is it a 4wd still and will the shift pattern be different? anyone ever do this conversion? Richard __________________ Not all who wander are lost

11-07-2005, 05:26 PM	#19
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	Re: transfer id Well, if the t-case were converted, you would have a part time NP203. Should say 2wd on the shifter.

11-07-2005, 11:27 PM	#20
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,855	Re: transfer id What no Brownie Points? It has been a while since I messed with a FT 203 but I believe after a conversion you will have 2wd hi and 2wd lo in the standard positions and hi loc is 4wd hi, lo loc is 4wd lo. As for the vibration I would check your u-joints for wear and make sure the u-joints are "in phase" which is aligned with each other, this applys to the front and rear shafts. Also the cardigan joint in the front driveshaft may be worn. I supect that all the way forward is 4wd hi or lo and you are getting the vibration from the front shaft spinning unloaded with the hubs unlocked. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

11-08-2005, 02:18 AM	#21
TWOKEELYA Registered User Join Date: May 2005 Location: Santa Cruz, California Posts: 54	Re: transfer id Richard I'll have my wife whip up a batch of brownies for you. Where do you want them shipped? The vibration continues after I shift into neutral while driving at speed, no change, so I wonder if there is a bad wheel berring or somthing. I'll take a look at the u joints and is there anyone out there that can give me a clue on how to post a picture ..."posting for dummies" Richard __________________ Not all who wander are lost

11-08-2005, 03:51 AM	#22
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Re: transfer id Maybe its an out of balanced tire or the tires themselves. A lot of your questions about posting pictures can be found in the FAQ forum. Last edited by Mudder; 11-08-2005 at 03:53 AM.

11-08-2005, 02:52 PM	#23
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	Re: transfer id to attach pics from your hard drive, click new reply, then scoll down a bit until you see Attach Files, and click on Manage attachements.. another window will open, where you can browse your hard drive and attach pics.. If they are too large you may have to reside them for it to work.. and it is recommended that you keeped them smaller, it makes it hard on those of us who still have dial up. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

11-12-2005, 02:02 AM	#24
gregbr Senoir Member Join Date: Mar 2002 Location: Rock Hill, SC USA Posts: 1,214	Re: transfer id 4wd Hi is with the shifter pulled closest to the seat, then 2wd Hi is forward 1 notch, then neutral, then 4wd Lo closest to the dash. You can test to see if the 203 has been converted to part time by putting it in the 2wd Hi position and unlocking the front hubs....if it will move in drive it is part time, if it just sits still and spins the front drive shaft it is still full time. If it's still full time you will have to leave the xfer in the 4wd Hi position or lock the front hubs. Went thru this with my 67 4wd that somebody swapped to a 203, I converted it to part time myself, it was pretty easy with the Mile Marker kit. Greg __________________ 67 Chevy, Small back glass, Factory 4WD, Factory Shortbed, Factory V8, Lifted 4" 70 GMC Sierra Grande, Factory Shortbed, Factory 402/400 turbo, Super Custom Interior. Numbers matching with SPID & Build Sheet. 68K Original Miles. Restored 2010 70 GMC Restoration Pictures http://67-72chevytrucks.com/gallery/...00&ppuser=4424

11-23-2005, 12:38 PM	#25
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	Re: transfer id Don't want to hijack the thread, but then does the 203 have the same shift pattern as a T-220? Thanks, Jeff. __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

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