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-   -   2 piece driveshaft (https://67-72chevytrucks.com/vboard/showthread.php?t=766919)

mars636 07-05-2018 10:09 PM

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.

LockDoc 07-05-2018 10:54 PM

Re: 2 piece driveshaft
 
Quote:

Originally Posted by mars636 (Post 8295022)
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

Re: 2 piece driveshaft
 
My 69 is the same. Its currently a 350/350 but started off life as an I6

mars636 07-06-2018 02:09 AM

Re: 2 piece driveshaft
 
It is a c10 and it had a 350 transmission

Bearhawg 07-06-2018 02:56 PM

Re: 2 piece driveshaft
 
coil or leaf springs?

LockDoc 07-06-2018 03:13 PM

Re: 2 piece driveshaft
 
Quote:

Originally Posted by Bearhawg (Post 8295421)
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

Re: 2 piece driveshaft
 
its stock.............

HO455 07-08-2018 12:42 PM

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.

CRMW 07-08-2018 08:53 PM

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

mars636 07-08-2018 11:37 PM

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

brad_man_72 07-12-2018 05:53 AM

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.

Andy4639 07-12-2018 07:48 AM

Re: 2 piece driveshaft
 
4 Attachment(s)
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. :chevy:

mars636 07-12-2018 09:07 AM

Re: 2 piece driveshaft
 
Quote:

Originally Posted by Andy4639 (Post 8299539)
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. :chevy:

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

Re: 2 piece driveshaft
 
Quote:

Originally Posted by mars636 (Post 8299574)
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.:metal:

Davidf 07-12-2018 02:11 PM

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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