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Old 03-23-2010, 02:00 PM   #1
Sick5
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New guy w/ Question

Hi guys new to the furom

I've got a 1965 gmc that I bagged and c notch
I'm having a issue after 2 years I hear and feel
a rumbling noise coming from under the cab.
First thing I thought was the u- joint wich I changed both
front and rear. The rumbling noise is still there just not as bad
I also notice as I raise the rear the noise gets even quiter.
Lower down my rear and I can reAlly feel it on my pedal
and hear it loud. Any one gone through this

Last edited by Sick5; 03-23-2010 at 03:21 PM.
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Old 03-23-2010, 04:19 PM   #2
Matt's k5
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Re: New guy w/ Question

Id say slip joint on driveline since driveline is shorter when rear end is raised, the splines are only in a little bit i lifted a jeep wrangler now it has a vibration and noise when accelerating, had to get a custom built driveline, anyways check that, later, matt
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Old 03-23-2010, 04:45 PM   #3
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Re: New guy w/ Question

You may be hammering your trans to death. Check your driveshaft length.
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Old 03-23-2010, 04:50 PM   #4
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Re: New guy w/ Question

If you have a one piece driveshaft, I agree with Jeff.

Quote:
Originally Posted by protrash64 View Post
You may be hammering your trans to death. Check your driveshaft length.
BTW Welcome to the forum
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Last edited by Captainfab; 03-23-2010 at 04:51 PM.
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Old 03-23-2010, 06:10 PM   #5
Sick5
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Re: New guy w/ Question

Or could I move my rear end closer using the four link that I installed
oh and thanks evey one for the response back
hoping to make my daily driver one of a kind

Last edited by Sick5; 03-23-2010 at 06:23 PM.
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Old 03-23-2010, 07:52 PM   #6
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Re: New guy w/ Question

Got Pics?
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Old 03-23-2010, 08:32 PM   #7
Sick5
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Re: New guy w/ Question

yah i got some pic
this was in 2007
what about rear wheel balance

i only get this problem after 48 mph
60 mph goes away not as bad
does anyone know what the lenght of driveline needs to be for a long bed


here is a url to my myspace more pictures i have of the truck
http://viewmorepics.myspace.com/inde...lbumId=1130814
Attached Images
 

Last edited by Sick5; 03-23-2010 at 08:38 PM.
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Old 03-24-2010, 09:30 AM   #8
Sick5
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Re: New guy w/ Question

i moved my 4link closer wich seemed to help i did a quick run last night
im going to test it this morning!
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Old 03-25-2010, 03:50 PM   #9
Sick5
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Re: New guy w/ Question

Lil better still feel it tho. I'm going to check wheel balance and check my pulleys
funny how it goes away when I stop stepin on the pedal.
More info would be helpfully guys thanks.
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