2 piece driveshaft - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mars636 · 07-05-2018, 10:09 PM

Where is the slip joint supposed to be on a 67 lwb 2wd with trailing arm suspension. On my truck the only slip joint is the yoke that goes into the transmission. the rear section is solid. with the carrier bearing in the front section there should be no real movement for the front driveshaft.

**LockDoc** · 07-05-2018, 10:54 PM

Quote:

Originally Posted by mars636

Where is the slip joint supposed to be on a 67 lwb 2wd with trailing arm suspension. On my truck the only slip joint is the yoke that goes into the transmission. the rear section is solid. with the carrier bearing in the front section there should be no real movement for the front driveshaft.

C10 or C20? What transmission?

LockDoc

CRMW · 07-06-2018, 01:07 AM

My 69 is the same. Its currently a 350/350 but started off life as an I6

mars636 · 07-06-2018, 02:09 AM

It is a c10 and it had a 350 transmission

Bearhawg · 07-06-2018, 02:56 PM

coil or leaf springs?

**LockDoc** · 07-06-2018, 03:13 PM

Quote:

Originally Posted by Bearhawg

coil or leaf springs?

He said trailing arm suspension in his first post. That would be coil springs....

LockDoc

BCOWANWHEELS · 07-06-2018, 05:47 PM

its stock.............

**HO455** · 07-08-2018, 12:42 PM

C10's with coil springs didn't come with a slip joint in either drive shaft. The fore and aft movement is taken up at the tranny yoke. The rubber mount in the carrier bearing allows the bearing to move as needed. C20's and the leaf spring trucks (and possibly some C10's with HD coil spring suspension) have slip joints in the aft drive shaft as well as a different style of carrier bearing.

CRMW · 07-08-2018, 08:53 PM

I don't want to hijack the tread but....

Do you know if the movement at the slip yoke is less than or the same as it would be on a one piece drive shaft?

I am considering a 5.3/6L80 swap but the 6L80 is a 4x4 tranny. A camaro tailpiece will bolt in place of the transfer case but the splines on the output shaft are shorter than a standard 2wd driveshaft so there isn't as much room for the slip as there is in a 2wd. The full conversion from a 4wd to 2wd requires a full disassembly of the transmission to change out the shaft which is kind of pricey.

Chris

mars636 · 07-08-2018, 11:37 PM

I believe with one piece driveshaft the only slip yoke was into the transmission. I thought I read somewhere if you are just swapping out the tail housing off a 4x4 with out changing the output shaft it would be better to keep the 2 piece drive shaft. I am doing a 6.0/4l80e swap right now also I think because mine is a long bed it might be easier to keep the 2 piece driveshaft. I did get a 2wd 4l80e though

brad_man_72 · 07-12-2018, 05:53 AM

This is how coil spring trucks and 60s impalas were built.
This design is very sensitive to people working on the driveshaft without having it rebalanced. Changing a ujoint will most likely create a vibration that will break the carrier bearing mount.
Best advice, leave it alone or have a pro rebuild the whole shaft.

Andy4639 · 07-12-2018, 07:48 AM

My 71 1/2 ton c 10 with 6.0 & 4L80E one piece drive shaft has been a good swap. The yoke going into the transmission is the only place it slides back and forth.

mars636 · 07-12-2018, 09:07 AM

Quote:

Originally Posted by Andy4639

My 71 1/2 ton c 10 with 6.0 & 4L80E one piece drive shaft has been a good swap. The yoke going into the transmission is the only place it slides back and forth.

I was going to see if i could get a one piece driveshaft also, i wasnt sure if it would make it through the crossmember without hitting it. i see yours is a long bed and it looks like you have not problems fitting it

Andy4639 · 07-12-2018, 10:21 AM

Quote:

Originally Posted by mars636

I was going to see if i could get a one piece driveshaft also, i wasnt sure if it would make it through the crossmember without hitting it. i see yours is a long bed and it looks like you have not problems fitting it

Yes it's a LWB truck. 3 years worth and it hasn't had any issues. I had it built by a drive shaft shop though.

Davidf · 07-12-2018, 02:11 PM

I thought the 2 piece driveshaft were only used on lwb versions due to the length of a one piece drive shaft being a problem...whipping issues. I could be wrong.

07-05-2018, 10:09 PM	#1
mars636 Registered User Join Date: Mar 2018 Location: Sherwood Park, Alberta Posts: 19	2 piece driveshaft Where is the slip joint supposed to be on a 67 lwb 2wd with trailing arm suspension. On my truck the only slip joint is the yoke that goes into the transmission. the rear section is solid. with the carrier bearing in the front section there should be no real movement for the front driveshaft.

07-06-2018, 01:07 AM	#3
CRMW Registered User Join Date: Jul 2014 Location: Calgary, Alberta Posts: 72	Re: 2 piece driveshaft My 69 is the same. Its currently a 350/350 but started off life as an I6 __________________ 1969 Chev C/10 1972 GMC K2500 Custom

07-06-2018, 02:09 AM	#4
mars636 Registered User Join Date: Mar 2018 Location: Sherwood Park, Alberta Posts: 19	Re: 2 piece driveshaft It is a c10 and it had a 350 transmission

07-06-2018, 02:56 PM	#5
Bearhawg Registered User Join Date: Feb 2018 Location: Snellville GA Posts: 104	Re: 2 piece driveshaft coil or leaf springs?

07-06-2018, 05:47 PM	#7
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	Re: 2 piece driveshaft its stock............. __________________ I BELIEVE IN JOHN 3:16

07-08-2018, 12:42 PM	#8
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,350	Re: 2 piece driveshaft C10's with coil springs didn't come with a slip joint in either drive shaft. The fore and aft movement is taken up at the tranny yoke. The rubber mount in the carrier bearing allows the bearing to move as needed. C20's and the leaf spring trucks (and possibly some C10's with HD coil spring suspension) have slip joints in the aft drive shaft as well as a different style of carrier bearing. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

07-08-2018, 08:53 PM	#9
CRMW Registered User Join Date: Jul 2014 Location: Calgary, Alberta Posts: 72	Re: 2 piece driveshaft I don't want to hijack the tread but.... Do you know if the movement at the slip yoke is less than or the same as it would be on a one piece drive shaft? I am considering a 5.3/6L80 swap but the 6L80 is a 4x4 tranny. A camaro tailpiece will bolt in place of the transfer case but the splines on the output shaft are shorter than a standard 2wd driveshaft so there isn't as much room for the slip as there is in a 2wd. The full conversion from a 4wd to 2wd requires a full disassembly of the transmission to change out the shaft which is kind of pricey. Chris __________________ 1969 Chev C/10 1972 GMC K2500 Custom

07-08-2018, 11:37 PM	#10
mars636 Registered User Join Date: Mar 2018 Location: Sherwood Park, Alberta Posts: 19	Re: 2 piece driveshaft I believe with one piece driveshaft the only slip yoke was into the transmission. I thought I read somewhere if you are just swapping out the tail housing off a 4x4 with out changing the output shaft it would be better to keep the 2 piece drive shaft. I am doing a 6.0/4l80e swap right now also I think because mine is a long bed it might be easier to keep the 2 piece driveshaft. I did get a 2wd 4l80e though

07-12-2018, 05:53 AM	#11
brad_man_72 the boat guy Join Date: Jul 2007 Location: springfield mo Posts: 2,339	Re: 2 piece driveshaft This is how coil spring trucks and 60s impalas were built. This design is very sensitive to people working on the driveshaft without having it rebalanced. Changing a ujoint will most likely create a vibration that will break the carrier bearing mount. Best advice, leave it alone or have a pro rebuild the whole shaft.

07-12-2018, 07:48 AM	#12
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: 2 piece driveshaft My 71 1/2 ton c 10 with 6.0 & 4L80E one piece drive shaft has been a good swap. The yoke going into the transmission is the only place it slides back and forth. Attached Images __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

07-12-2018, 02:11 PM	#15
Davidf Registered User Join Date: Nov 2014 Location: Austin Posts: 749	Re: 2 piece driveshaft I thought the 2 piece driveshaft were only used on lwb versions due to the length of a one piece drive shaft being a problem...whipping issues. I could be wrong.

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