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11-05-2024, 12:55 PM | #1 |
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Join Date: Sep 2005
Location: spokane, WA
Posts: 16
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1970 GMC Longbed driveshaft
I can’t sort out how to take the front half of my driveshaft out. The front half of the drive shaft with the carrier bearing has no room to move essentially trapping the driveshaft in place. Anyone have any insight on how this thing can be removed? Carrier bearing is too larger to fit through the cross member. I didn’t build this part of my truck it came to me this way from PO.
Last edited by asesapie; 11-05-2024 at 01:01 PM. |
11-05-2024, 01:01 PM | #2 |
Post Whore
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Re: 1970 GMC Longbed driveshaft
Someone correct me if I'm wrong but I don't believe that is a factory carrier bearing. All the ones I've seen are mounted on the other side of the crossmember. You may have to unbolt the crossmember and push it back enough to get the driveshaft out.
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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 Last edited by HO455; 11-05-2024 at 01:07 PM. |
11-05-2024, 01:02 PM | #3 |
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Re: 1970 GMC Longbed driveshaft
Yeah sorry the photos had a glitch when uploading and making the thread. Uploaded photos now.
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11-05-2024, 03:24 PM | #4 |
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Join Date: Aug 2013
Location: Northern Santa Barbara County, California
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Re: 1970 GMC Longbed driveshaft
This is from a 1971 service manual Chevrolet Service News Vol. 43, Number 2, Feb 1971.
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11-05-2024, 01:51 PM | #5 |
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Re: 1970 GMC Longbed driveshaft
with the carrier bearing unbolted you should be able to force the driveshaft back far enough to get the U-joint to clear the yoke on the transmission. You need to remove the U-joint caps for extra clearance.
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11-05-2024, 03:31 PM | #6 |
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Re: 1970 GMC Longbed driveshaft
Is your truck a C20/30?
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11-06-2024, 10:46 PM | #7 |
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Join Date: Sep 2005
Location: spokane, WA
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Re: 1970 GMC Longbed driveshaft
Well got it sorted out. First time messing with one and thanks to Bnorth and Richard I got it sorted. Appreciate the help. Didn’t know the metal cage around the rubber isolator would pop off. Thanks!!
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11-07-2024, 09:04 AM | #8 |
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Join Date: Feb 2016
Location: Portland Oregon
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Re: 1970 GMC Longbed driveshaft
Good work. Thanks for keeping us posted to the end. I love threads that I learn stuff from.
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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 |
11-06-2024, 06:57 PM | #9 |
The Niner
Join Date: Nov 2010
Location: Broad Brook, CT
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Re: 1970 GMC Longbed driveshaft
Carrier bearings differ depending on if you're running leafs vs coil springs/truck arms.
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"A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/ |
11-06-2024, 08:22 PM | #10 |
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Re: 1970 GMC Longbed driveshaft
Pop the metal U clamp off of the rubber isolator and it should go through the hole in crossmember.
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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