Hey guys, thanks for all the great info. I'm a newbie to the lifted 4x4 crowd and I wold like to freshen up my transfer case on my 74 k5 cheyenne blazer. Does anyone know what these came with? Would it be cheaper, ur um, better to buy a rebuild kit and do the work myself or purchase one that has already been done? I'm not a rookie to hotrods, just a rookie to 4x4 parts. Is freshening up a transfer case something a 4x4 rookie could do? Thanks again and have a great day everyone!!

Bob

Auto or stick? I bet it's a 205 x-case they are the holy grail of x-cases. You shouldn't have to do anything to it as long as it has been full of fluid. ....need more info....

Hey Bob,
Your case should have a tag on the back of it telling you what case it is.
74 I believe have a np203, witch is not the best case.
However you do have a few options,
Replace with a np205, bulletproof case and install is easy, all you need is the case and adaptor from your tranny.
You could also make a doubler (http://www.coloradok5.com/orddoubler.shtml) , it is more money and takes some fabbing , but a better option
To "freshen up" a 203 is not worth the time or money IMO.

Good Luck!

i think the 74 had the 205 in it still, there are few ways u cna tell, firts, do u have lockouts, the 205s would, the 203s wouldnt. second how many chioces do u have in the t-case shifter. a 205 will have 4: 4h-2h-n-4l and a 203 will have 5: hi loc-hi-n-low-low loc. its is olso posible that the case could have been changed. those are the basics, figurout what u got before u need to fix it

To answer a few of the questions. It's an automatic with a column shift. It has five choices hi loc-hi-n-low-low loc. Not sure what you mean by lockouts. I do have to get out of the blazer to lock the front hubs by hand. The reason I thought it needed freshening up was because the handle rattles and moves a bit when driving. Thought it might be loosening up. maybe that's how they are supposed to be. The only other 4x4 I've owned is a 99 tahoe which I still have. Everything on that ride is push button so I never learned all the lingo and parts. Not to mention the 4 wheel drive is only used for snow and ice in mountains on that ride. The k5 is sitting in front of the house drueling for some mud!!! Thanks for all the help so far. I'm going to go crawl under it after work to see if I can find that tag. Have a good one my friends!

Bob

Sounds like you have a 203 with a part time kit. If the handle vibrating is the only problem you have with the t-case a rebuild kit won't do you much good. The shifter handle goes into a box that splits the single handle into 2 rods. Then the rods go to the t-case. If everything is working smoothly with the shifter box and it is just loose I would pull the shifter box and put a couple more shims in it (flat washers). That is if the shifter vibration is realy anoying you.

Better yet change to a twin stick and get rid of most of the junk in the shifter box.

And by the way. Even if it is a 205. The shifter is just held on the side of the case by a single pivot and runs a rod to the back to acualy shift the case. Eliminating the vibration in the shifter doesn't require a rebuild.

You have a 203 there. Since you are new to all this I wouldnt mess with it just figure out why the handle is loose, try tightning the bolts that bolt the shifter to the transfercase or the linkage. If that doesnt fix it run it till it breaks then let me know and I will sell ya the one I have laying around, cheap.

This is what the back of a 205 t/c looks like.
http://community.webshots.com/scripts/editPhotos.fcgi?action=showMyPhoto&albumID=93139347&photoID=93140678&security=fRNklU

yea, def sounds like the 203 with the partime kit, those boxes are know to be junk after 20+years, if yours works, leave it, if the handles loose, it bolts on with 2 bolts to that box, they can get loose, check there first, if the whole box moves it might be the bolts that hold the box to the case, chjeck them. since ur not too ffam with it, dont pull that box apart, they tend to not work anymore then. as for the case, u wont need to rebild that, not yet at least

Hey spoolnaround, could you try and email me that pic? The link won't let me into to view it. I looked for a tag last night for confirmation and couldn't find one. I'm going to steam clean the whole underside this weekend to see if that would help. It sounds like I do have the 205 case since the cheyenne is the 3/4 ton blazer. That pic would help a great deal with figuring this whole thing out. Thanks for for all the help so far guys. i appreciate it!!

Bob

71rsz28@pon.net

sounds like I do have the 205 case since the cheyenne is the 3/4 ton blazer.

I have never herd of a stock 3/4 ton Blazer. Things were probubly swaped around so who knows whats in it.

Sorry the 3/4 ton thing was just an assumption of mine. I know all the new cheyenne trucks are 3/4 ton versions, so I assumed that meant mine was a 3/4 ton. Kinda like the differences in the modern tahoes of 1500 vs. 2500. I learn something new everyday!

umm ya cheyenne was only the option pack...as in interior options ac tilt,carpet and some extra trim.....blazers never came 3/4 ton....is it 6 lug or 8 lug? if its 8 lug someone changed it....the transfer case shifter rattle is normal for these rigs...every one ive ever rode in or owned had that rattle...just be creative and youll find a solutuin...i made washers out of a butter container lid...kind of a soft plastic...it was a tight fit but the rattle stopped....been workin good for almost 2 years now...

On my 205 I used a few rubber o-rings to stop the rattle.

If he has a transfer case that goes into 2low it is definatley a 203 unless someone did some work on the shiftrails in a 205 and put a 203 knob on the shifter.

The choices for shifting are not shown on the shifter knob. They are on a small piece of aluminum next to the shifter. And it definately has all five options. Hi Lo Hi-loc Low-loc and nuetral. I do know it is full time 4 wheel as well from reading the documentation behind the visor. Still don't understand that one totally since I have to get out to lock the front hubs. Anyway, you guys have been great. Another member sent me a picture of the back of a 205 and I'd bet my grandma that's the one.

Bob

Nope, 203
The 205 goes
4lo
n
4hi
2wd
;)

Yep, if it realy has those positions than its a 203.

Also, if you have manual hubs and you can unlock them and still move in regular 2HI (not HI LOCK) than it has a part time kit. Stock, the all wheel drive system will always power the axle with the least resistance...like and open diff.

I sent you some photos of a 203. Now get under that thing and give us a positive ID :D

Hey spoolnaround , you've got me confused here my friend. The email you sent me said it's a 205 and your last post said you sent me the pics of a 203. It's deffinately exactly what you sent me in the pic. So it looks like I have a 203? Just need confirmation my friend. Looks like I'll make sure it's got all new fluids in it and drive it till it dies and then upgrade later. Being a rookie on the scene I probably don't need to upgrade quite yet. I think it would suck to spend all the money to upgrade and bust it doing some stupid rookie manuever. Now it's time to bust out the saturday morning high pressure washer and see how nice and clean I can make this drivetrain before I start wrenching on it. I got to finish up the subframe on the camaro as well. have a good one everyodody and thanks for all the help.

Bob

Sorry if I confused ya. The orange tc is a 205. The pics I sent you last night of the greasy tc is a 203. On the back there is a tag that will tell you exactly which case it is. ID is really as simple as what I described in the e-mail I sent you last night. I wish I could figure out how to post pics again give me afew I will figure it out.

Go here to see my photos on line.
http://community.webshots.com/user/spoolnaround

:D 203

;)203

This one is the 205

see the little circular cover held on with 3 bolts
only the 205 has that
it is for the countershaft in the gear driven 205
the 203 has a chain so no countershaft

I dont understand why I cant post pics anymore?? Well anyway there they are.