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08-06-2011, 06:55 PM
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#1 |
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Registered User
Join Date: Apr 2009
Location: kennesaw Ga
Posts: 89
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Driveshaft problems please help
I have a '72 C10 350/TH350 LWB. Twice in the past few months I have replaced the carrier bearing and twice it has completely ripped the mount apart. The driveshaft doesn't have any obvious vibrations. Only when excelerating from a stop.
Help please. Posted via Mobile Device |
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08-06-2011, 07:17 PM
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#2 |
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Newbee
Join Date: Jan 2010
Location: Phoenix, Arizona
Posts: 1,406
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Re: Driveshaft problems please help
Take the shaft to a driveline shop and have them ballance it, and check it for straight. It doesn't take much to really mess things up.
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08-06-2011, 09:04 PM
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#3 |
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Registered User
Join Date: Nov 2010
Location: Carlsbad, CA
Posts: 1,584
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Re: Driveshaft problems please help
I had a problem similar to yours and it turned out to be the rubber isolator (see Posts #72-74 in my Project thread for details)
__________________
- Jim - My Daily Driver is a 1969 Chevrolet Custom/20 Fleetside 350/TH400/Eaton H052 4.10 and its Project thread is here http://67-72chevytrucks.com/vboard/s...d.php?t=456911 |
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08-06-2011, 10:15 PM
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#4 |
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Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,229
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Re: Driveshaft problems please help
Your U-joints are probably out of phase.
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08-07-2011, 12:34 AM
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#5 |
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Registered User
Join Date: Nov 2010
Location: Grand Terrace, Ca.
Posts: 1,607
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Re: Driveshaft problems please help
Is there a dent in your driveline? If it has a dent your driveline is bent (not straight). Vibration under acceleration suggests you have a problem with driveline geometry. There is a lot of great information on drivelines on the Spicer web site.
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08-07-2011, 01:08 AM
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#6 | ||
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,031
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Re: Driveshaft problems please help
Quote:
Quote:
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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08-07-2011, 10:29 AM
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#7 |
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Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 1,108
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Re: Driveshaft problems please help
You didn't say if your truck has been lowered, but if it has it could be your pinion angle. Several companies offer wedges that correct the pinion angle. Usually a 3 or 4 degree wedge will tilt the pinion angle down enough to compensate the lowered stance.
If the ride is stock, I would agree with all of the above replys. NoNeck
__________________
2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND. |
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08-07-2011, 03:03 PM
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#8 |
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Registered User
Join Date: Jan 2008
Location: HOUSTON TX
Posts: 1,161
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Re: Driveshaft problems please help
Have a slip yoke put in the rear shaft.
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08-09-2011, 09:12 AM
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#9 |
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the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Driveshaft problems please help
sounds like the shafts are out of time. Sounds like a trip to the driveine shop to hae tem put on a carrier bearing, put the shafts back in time, check ujoints and ballance.
low speed vibration is from angle or phasing prolems. A bent shaft viration will usually start around 45mph |
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