ChevelleForum.net

Go Back   Chevrolet Chevelle Forums > Chevrolet Chevelle Garage > Chevelle Suspension & Chassis

Reply
 
Thread Tools Display Modes
  #1  
Old 09-07-2010, 11:56 AM
RBeckman's Avatar
RBeckman RBeckman is offline
Senior Member
 
Join Date: Apr 2010
Location: Fenton Mi
Posts: 1,126
Send a message via MSN to RBeckman
Default Lesson learned on u-joints and driveline vibration

After I put in the 5 speed I still had the vibration at 50 to 70 that I've had for over 10 years and always blamed it on the 41 year old drive shaft even thou I kept going thru u-joints.

Well after 700 miles on the new transmission I had u-joint noise again and got under the car and could move the drive shaft up and down on the yoke axis. I started doing some measurements on the yoke and u-joint and see about a 5 thousands difference, I then went and bought a new u-joint and still the same difference. I then called a drive line shop and gave them the dimensions I was seeing on the yoke and they told me that it was worn and I needed a new one. (I was having a hard time believing that these things could wear out). I ordered a new one for about $80 and installed it and wow what difference it makes. I took it up to about 90 mph (2600 rpm) and no vibration. Also...wheel hop is greatly reduced (that was the fun test).

Just thought I would post this for anyone that does a search for vibration that it is a thing to look at.

The measurements I was getting on the old yoke were 3.275 and the new one was about 3.230
__________________
Ric Beckman
1969 Chevelle SS396
1972 Camaro SS350
Reply With Quote
  #2  
Old 09-08-2010, 12:06 AM
Bowtie-Bri's Avatar
Bowtie-Bri Bowtie-Bri is offline
Senior Member
 
Join Date: Dec 2009
Location: West Michigan (Home of the Tulips)
Posts: 559
Default

Hey Ric,
I know exactly what your talking about.
I have a vibration in at around 70mph. I replaced the trans with a 700r4.
I also had a different driveshaft cut and replaced the u-joints. I still had the vibration. Once I get the car back on the road, I'm planning to do a gear change from a 3:31 to 3:73. I think I might just replace the yoke on the rearend and hopefully my vibration will be gone.
__________________
Brian
New Ride! 2013 Stage 2 Nickey Camaro Convt. 780HP @ the fly wheel!1970 Chevelle SS 396(SOLD)
Reply With Quote
Reply

Tags
diff, u-joint, vibration, yoke

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:26 PM.



Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Audiokarma.org