: chevy new guy(what is this?)


sicaz66
09-12-2002, 11:10 PM
my blood bleeds ford blue but, i can pick up a killer tow rig for cheap.($1700.00)has a new performance built 350 ( with all new accessories), new trans,never been in an accident, no dents,33"bfg`s and alloy wheels. a very clean looking rig. the truck is a 1974 c-20. i`m assuming it`s a 3/4 ton?(it has the 8 lug pattern) it has what looks to be a dana 44 front and a 14 bolt rear?(didn`t think to count the bolts?). what trans and t-case does this truck come with? it does not have locking hubs so i`m assuming it is the part time 203 case.the front drive shaft is missing and when i put it in low or low loc it will not move?does this mean the t-case is bad? it works fine in hi and hi loc. can i swap in a 205 easily? is it easy to rebuild a 203 case (my dana 20 was a piece o`cake).does any one in so cal. have a 203 for sale?what trans should this be?(it`s an automatic).THANX!

charlo
09-12-2002, 11:26 PM
3 gears = 350
4 gears = 400
tcase = 203
203s are easy to rebuild, while doing it maybe convert to part time. Axles sound right but I think the rear my be SF. Im just guessing by the way.


Charlo

P.S.
66` bronco(rust free) sefi from 5.0 mustang,dual lockers,full cage,all parts on rig are new!
Get it dirty already!

sicaz66
09-12-2002, 11:39 PM
dirty ! hell it looks old already!

bgreen
09-13-2002, 03:06 AM
th-400 is a 4 speed? WTF? Im gonna go out on a limb here and assume that you dont know what the Fawk your talking about. :flipoff2:

cj8scrambld
09-13-2002, 06:05 AM
bgreen, I was a bit confused with the 3 gears=350 and 4 gears=400 also, I was trying to think if he was talking about something else.....like maybe answering someone else's post. I will give him the benefit of doubt as maybe he had too many :beer: 's

4Bangler
09-13-2002, 07:05 AM
Ummm.......yeah, TH400 a fourspeed? Step away from the carck pipe. Most likely the truck in question will have a TH350 with an NP203, but could be a TH400/NP203 with the heavy duty option package. Dana 44 HD with external hubs, and definately a FF 14 bolt, again, Charlo has been into the funny stuff, semi-loaters are the bain of post '80 3/4 tons. An unaltered NP203 should only move in Hi Loc and Lo Loc with the front shaft removed, if it won't move in Low, check that the shifter is adjusted right. The only thing cool about no front driveshaft is awesome burnout capability. Check out the front axle, that front shaft is missing for a reason, pull the cover and make sure you're not buying a 2wd truck.

pcorssmit
09-13-2002, 07:47 AM
Originally posted by charlo
3 gears = 350
4 gears = 400


WRONG!

...I think the rear my be SF. Im just guessing by the way.


WRONG!

Quit fawking guessing until you can give some decent advice! :D


Pete

mj
09-13-2002, 11:05 AM
well a C20 is a 2wdr truck isnt it?

sicaz66
09-13-2002, 11:39 AM
i do know enough that a 3spd auto is either a th-400 or th-350.
i haven`t checked the front axle yet. kinda gotta buy as is. the O.G. owner said the front shaft was stolen? but due to the rig not moving in lo loc. i`m going to buy assuming the t-case is bad. this truck runs awesome and will light `em up all day long.i`m just trying to figure out which parts i have. how much should i expect to pay for a used 203 case? should i just overhaul and rebuild the current case? think it`s a corporate 14 in the rear? will this rig pull my 5000lb. bronco and a 2000lb trailer? THANX FELLAS!

spoolnaround
09-13-2002, 03:31 PM
203 for sure if it has auto hubs and 2low. FF14 in the rear most likley 4.10's in the difs. If the trannie pan has a corner cut off it is a TH 350. I will post a pic. I just happen to have a t-case and a driveshaft if you are interested PM me. check out your linkage first and make sure thats not the problem. If it runs as good as you say it should pull your trail stuff fine, make sure it has a trans cooler if you tow with it.

spoolnaround
09-13-2002, 03:37 PM
http://pages.prodigy.net/nuttyisme/TH350pan.jpg
This is what a TH 350 pan looks like.

SCOTTS_4X
09-13-2002, 04:19 PM
if it doesn't move in l4hi or 4lo, you think maybe the differential in the t-case might be the problem? there's a differential (yes like the front and rear axle) in the t-case, hence the "fix" part time kit coming with parts to lock it up and make the power division 50:50 (like a locked diff in your rearend) instead of 100:0 with no front d-line, just like what would happen when you lift one tire in an open diff'd rearend. the t-case isn't shot unless you hear the chain skipping under acceleration. and ye, the tranny is wither a 350 (square on 3 corners and 45'd on one corner of the pan) or a 400 (texas shaped pan) 44 and 14 bolt sound right for a 74 like said previously....

-Scott

Shaker
09-13-2002, 04:25 PM
If the Trans. Pan looks square on all corners it's a Turbo 400 which is a .....3 SPEED.... Here is the real way to find out if you have a 205 in it....see if it has that 3 bolt "cover" on the back side. If the rear on the x-case has Aluminum tailshaft it's a 203......hope this pic helps...:D

sicaz66
09-14-2002, 07:14 AM
i know it`s not a 205 pretty sure it is a 203.i`ll check the trans pan today.do you guys think the t-case is o.k.?
hey spoolin,how much for that shaft?

sicaz66
09-14-2002, 07:28 PM
okay looked at the truck again today and made a deposit on it.
it has:350 motor,th350 trans,np203 case,dana44 front,corporate 14 bolt rear. pretty stout stuff or what? still kinda wondering about the t-case not working in lo? if the case differentiates how does it work when you just put on manual hubs? would it not roll if the the hubs were dis-engaged?

rodzzilla
09-14-2002, 07:40 PM
If you put manual hubs on it without doing the part time kit, you will have to put the t case into the Loc position in order to move. There is a differential in the case, much like the differential in your front or rear axles. It will send the most power to the least resistance. If the hubs are unlocked, that is where the power goes. It won't hurt to put hubs on, just leave them locked.

Edit. Oopps didn't read Scott's post.

jonscj7
09-15-2002, 08:35 PM
swap the 203 out for a 205. if you get a 205 that was originally behind a TH350 and the adapter all you have to do is bolt it in, no transmission mods as long as it is a TH350. You will have to modifiy the rear shaft since it will need to be like 10" longer. If you decide to go this route pm me because I have a couple of the 205's that you need. I am not trying to sell one to you just letting you know you will be much happier with the 205.

Thanks Jon

FJ-Dave
09-23-2002, 10:13 PM
not auto hubs either, those are full time hubs with dust covers on 70s 203 equipped trucks.