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Old 07-05-2018, 10:09 PM   #1
mars636
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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.
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Old 07-05-2018, 10:54 PM   #2
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Re: 2 piece driveshaft

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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?

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Old 07-06-2018, 01:07 AM   #3
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Re: 2 piece driveshaft

My 69 is the same. Its currently a 350/350 but started off life as an I6
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Old 07-06-2018, 02:09 AM   #4
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Re: 2 piece driveshaft

It is a c10 and it had a 350 transmission
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Old 07-06-2018, 02:56 PM   #5
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Re: 2 piece driveshaft

coil or leaf springs?
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Old 07-06-2018, 03:13 PM   #6
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Re: 2 piece driveshaft

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

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Old 07-06-2018, 05:47 PM   #7
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Re: 2 piece driveshaft

its stock.............
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Old 07-08-2018, 12:42 PM   #8
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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.
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Old 07-08-2018, 08:53 PM   #9
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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.

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Old 07-08-2018, 11:37 PM   #10
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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
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Old 07-12-2018, 05:53 AM   #11
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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.
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Old 07-12-2018, 07:48 AM   #12
Andy4639
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Thumbs up 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.
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Old 07-12-2018, 09:07 AM   #13
mars636
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Re: 2 piece driveshaft

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Originally Posted by Andy4639 View Post
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
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Old 07-12-2018, 10:21 AM   #14
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Talking Re: 2 piece driveshaft

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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.
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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.
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Old 07-12-2018, 02:11 PM   #15
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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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