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05-02-2013, 01:25 PM
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#1 |
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Registered User
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,686
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Replacement drive shaft, Trying to cure vibration
I have been chasing down a vibration since a rear gear change from 2.56 to 3.73. Thinking it might be the driveshaft or ujoints, I went to my friends junkyard looking for a replacement. They had several 3.66" aluminum drive shafts off of crown vic police interceptors. It measured exactly the same as mine from center of the joint to center of the joint (55.5). Some conversion ujoints from NAPA, and it went in perfectly.
It helped a lot but I still have a vibration from about 55-62mph..I think what's left is probably from the 15 year old tires. Anything else I should be looking for??? |
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05-02-2013, 01:47 PM
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#2 |
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Registered User
Join Date: Aug 2012
Location: On the banks of the Clackamas River, Eagle CreeK Oregon
Posts: 387
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Re: Replacement drive shaft, Trying to cure vibration
Came across a similar problem years back, suggestion was made to orientate the zirk fittings on opposite ends of the yokes. One was turned right, other was turned left. Solved problem
Old school mechanic told me this was tuning the driveline.. ? 
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05-02-2013, 02:36 PM
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#3 |
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Registered User
Join Date: Sep 2010
Location: Marble Falls, TX
Posts: 1,575
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Re: Replacement drive shaft, Trying to cure vibration
Kinda wondering about what to check as well. I have a nice vibration from 55-60ish on mine.
__________________
Michael Re-starting the neglected '77...http://67-72chevytrucks.com/vboard/s...=425464&page=9 |
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05-02-2013, 04:53 PM
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#4 | |
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Registered User
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,686
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Re: Replacement drive shaft, Trying to cure vibration
Quote:
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05-02-2013, 06:26 PM
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#5 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,210
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Re: Replacement drive shaft, Trying to cure vibration
Take a look at this.
http://67-72chevytrucks.com/vboard/s...d.php?t=522180 The last several pages are the thought process used to separate, identify and repair a vehicle vibration. K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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05-02-2013, 08:31 PM
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#6 |
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Registered User
Join Date: Oct 2008
Location: Rhode Island
Posts: 37
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Re: Replacement drive shaft, Trying to cure vibration
Jesus, I am working on solving this same vibration too. Makes me want to tear the truck down like a mad man.
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05-03-2013, 08:20 AM
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#7 |
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Registered User
Join Date: Sep 2010
Location: Lake Havasu City Arizona
Posts: 863
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Re: Replacement drive shaft, Trying to cure vibration
X2 but mine show up around 80mph and continue above 100 (had to lift at 100 for traffic)
Dam I love that T56
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05-03-2013, 12:43 PM
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#8 | ||
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,210
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Re: Replacement drive shaft, Trying to cure vibration
Quote:
Quote:
It's all about separating the wheat (the true root causes) from the chaff (the stuff you don't care about). K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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