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08-26-2020, 11:39 AM | #1 |
Registered User
Join Date: Aug 2012
Location: Pasco, WA
Posts: 9
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Drive Shaft about an inch short
I’m curious what options I have. I recently replaced a 71’ shot 2 piece drive shaft with a one piece from my 68. After shortening the frame. While I initially thought they were perfectly 12” apart it appears it’s about 1” shorter than necessary. Do I HAVE to have it retubed or could I add a double cardan joint to the rear? Has anyone come across this before?
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08-26-2020, 12:29 PM | #2 |
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Join Date: Sep 2016
Location: Ozark, MO
Posts: 573
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Re: Drive Shaft about an inch short
I am not sure what you mean by 1" too short. There is more than 1" of travel at the transmission slip yoke. Is it long enough that you can drive the truck and you are concerned about it falling out as the suspension travels?
In any event, you cannot put a double cardan joint on it. Retubing is not that expensive. the yokes and joints are what makes a driveshaft expensive. I had one retubed locally for <$50. |
08-26-2020, 12:33 PM | #3 |
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Join Date: Aug 2012
Location: Pasco, WA
Posts: 9
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Re: Drive Shaft about an inch short
Sorry about that, the yoke slips in but about 1.75” is exposed causing a small fluid leak that was not an issue before. There is noticeably about an inch of “polished” yoke that was previously sleeved. I used the same yoke from the other drive shaft. I was quoted $200-$250 to retube.
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08-26-2020, 01:46 PM | #4 |
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Join Date: Dec 2012
Location: ON, Canada
Posts: 2,176
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Re: Drive Shaft about an inch short
There are longer yokes available, check around and see what you can find. Easier and cheaper than re-tubing.
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08-26-2020, 02:27 PM | #5 |
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Join Date: May 2016
Location: Henderson NC
Posts: 975
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Re: Drive Shaft about an inch short
Replace the yoke and rear seal and you should be good to go.
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08-26-2020, 04:33 PM | #6 |
Post Whore
Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,350
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Re: Drive Shaft about an inch short
Here is more information on what your contemplating.
http://67-72chevytrucks.com/vboard/s...d.php?t=809359
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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 |
08-26-2020, 05:42 PM | #7 |
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Join Date: Jul 2006
Location: Ozark, MO
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Re: Drive Shaft about an inch short
I have that condition, the seal wears out quicker.
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'20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids
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08-26-2020, 06:22 PM | #8 |
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Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,708
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Re: Drive Shaft about an inch short
You really need to put the correct length tube/shaft in.
I'm not sure why one would assume and cut rather than measure first but so be it. A longer yoke might help but the yoke sticking out that far will beat the bushing out along with knocking seals out and eating up the yoke. I've got the correct tools to change bushings in Turbo 350 or 400 in the truck if you need help with it. It's about a five minute job if you have the drive shaft out and a new bushing ready to go.
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Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
08-26-2020, 07:10 PM | #9 |
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Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,322
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Re: Drive Shaft about an inch short
I'm having mine rebuilt, though it's a two piece SWB shaft. I wonder why a 68 had a one-piece when other years didn't? For what it's worth, I wanted a one-piece and was advised by two of two shops to stick with the two-piece.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
08-27-2020, 07:56 PM | #10 | |
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Join Date: Aug 2012
Location: Pasco, WA
Posts: 9
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Re: Drive Shaft about an inch short
Quote:
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08-27-2020, 07:58 PM | #11 |
Registered User
Join Date: Aug 2012
Location: Pasco, WA
Posts: 9
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Re: Drive Shaft about an inch short
I would assume at some point before me in its 52 years of life someone just swapped for it. I’ve only had it since 2003.
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