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**JIMs70GMC** · 07-15-2004, 11:19 AM

A guy I know has a 75 c10 w/ 6" lift and 33" tires. He was telling me he thinks his transfer case was shot because when he puts it in 4wd he gets a clunking noise and the truck shakes. So I asked what TC did he have (he didn't know) I take a look and it's a 203 w/ part time kit. I told him could be the chain. So he locks the front hubs and puts it in 4wd and pull forward and the front drive shaft is all over the place, the slip yoke has about 3/4" of side to side play. I look closer and the double cardian joint is rubbing on the tranny cross member hence the very repetative clunking noise. Well I think I made his day, he was trying to unloaded but he couldn't find any takers.
I do have a question, his tranny cross member looks like it sets up further from the TC, would this be because of the 203 or the tranny(TH350)? i.e. my 205s w/ SM465s, the cross member is closer to the TC.

Mudder · 07-19-2004, 11:17 PM

I would have to look at mine (203/350).

**kwmech** · 07-23-2004, 11:28 AM

Sounds more like the tansfercase mounts are bad/sagged or oilsoaked, and probably wiped out the output bearing. If that is the case there is a good chance that the t-case is out of oil.

**JIMs70GMC** · 07-23-2004, 11:34 AM

The only cross member was for the tranny the TC is just hanging off the back of the tranny. When I wiggled the driveshaft, I didn't see alot of play at the CV. But the cv hitting the crossmember can't be good.

07-15-2004, 11:19 AM	#1
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	listen to this A guy I know has a 75 c10 w/ 6" lift and 33" tires. He was telling me he thinks his transfer case was shot because when he puts it in 4wd he gets a clunking noise and the truck shakes. So I asked what TC did he have (he didn't know) I take a look and it's a 203 w/ part time kit. I told him could be the chain. So he locks the front hubs and puts it in 4wd and pull forward and the front drive shaft is all over the place, the slip yoke has about 3/4" of side to side play. I look closer and the double cardian joint is rubbing on the tranny cross member hence the very repetative clunking noise. Well I think I made his day, he was trying to unloaded but he couldn't find any takers. I do have a question, his tranny cross member looks like it sets up further from the TC, would this be because of the 203 or the tranny(TH350)? i.e. my 205s w/ SM465s, the cross member is closer to the TC. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

07-23-2004, 11:34 AM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	The only cross member was for the tranny the TC is just hanging off the back of the tranny. When I wiggled the driveshaft, I didn't see alot of play at the CV. But the cv hitting the crossmember can't be good. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

07-19-2004, 11:17 PM	#2
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	I would have to look at mine (203/350).

07-23-2004, 11:28 AM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,628	Sounds more like the tansfercase mounts are bad/sagged or oilsoaked, and probably wiped out the output bearing. If that is the case there is a good chance that the t-case is out of oil.



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