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Topic: Clunky rear

in Forum: C3 Driveline Components


Clunky rear

Posted: 8/15/03 5:44pm Message 1 of 14
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TWENTYNINE PALMS, CA - USA
Joined: 8/6/2003
Posts: 245
Vette(s): 77 Vette L82, black.
Ok, just bought the car a week ago, paid 2k out the door tax, tags, etc. So I knew it needed work. Going straight is fine. If I turn right the car clunks and pops. My roomie noticed the right rear tire wobbles even when going straight. Lug nuts are tight. Can anyone tell me the following.
1.) What to check
2.) how to check it
3.) Where to buy new/rebuilt parts for the cheapest (US Marine, my payday isn't glamorous)

I've been fixing cars for a long time, but this is the first time I ever dealt with Independent Rear Suspension. Thanks in advance!

Matt |saluteflag|


|IMG|http://www.C3VR.com/member_uploads/3701_3800/3714/duskbgoddesssmall.jpg|/IMG| |B|Semper Fidelis! |/B|
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Clunky rear

Posted: 8/15/03 8:10pm Message 2 of 14
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Joined: 1/29/2002
Posts: 1049
OK Matt, welcome to the Corvette world |thumb|
Check the rear U joints as well as the rear suspension system (spring). The rear could be low on lubricant which may be the lesser of 2 evils but I would replace the u joints and inspect the 1/2 shafts


Clunky rear

Posted: 8/16/03 6:20am Message 3 of 14
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BINGHAMTON, NY - USA
Joined: 7/19/2003
Posts: 3808
Vette(s): ......
Welcome to the world of wandering rear ends ,the clunk could be many things, I replaced all the u-joints sway arm bushings stabilizers and bushings,axle bearings. still had the noise,It was the differential. drain out as much of the old oil as you can I use a hand syphin pump add 2 quarts of lube and 1 bottle of G.M. limited slip additive,put the additive in first then add the rest of the lube.I did this twice just for fun no more noise.the wobble could be a bent spindle or possibly bad axle bearings.If the bearings are bad ,you may as well do both axles while youve got it off the ground.I get most of my parts from mid-america or corvette central,but there are many places to get them .good luck . ron 78 |thumb| |saluteflag| |withstupid|


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Clunky rear

Posted: 8/18/03 9:03am Message 4 of 14
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Canada
Joined: 9/17/2002
Posts: 64
Vette(s): 1972 conv. 454ci 4spd 1978 slv annv L48 autom
Had a similar thing with our 78. Went to Gm and got a complete Lube change for the rear end 2years ago.Have not heard a sound since!! Hope it works for you as well. Regards Runamuck |thumb|


My Two Babies!!!!

Clunky rear

Posted: 8/20/03 7:24pm Message 5 of 14
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CONCORD, MA - USA
Joined: 6/12/2002
Posts: 185
Vette(s): 78 Silver Anniversary (2 Tone) L82 auto loaded
The manual calls for 2 little bottles of posi additive.
Get yourself the repair manual package at
Helms Publications.com. You will need them to patch an
old Vette-like I did.
Good luck with your project!
Enjoy!
Steve
|wavey|


Clunky rear

Posted: 8/20/03 10:00pm Message 6 of 14
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TWENTYNINE PALMS, CA - USA
Joined: 8/6/2003
Posts: 245
Vette(s): 77 Vette L82, black.
Thanks for the help all. I'll be working on the Dash harness and the rear end this weekend. I'll let you all know what I find out. Thanks again.
Semper Fidelis |saluteflag|


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Clunky rear

Posted: 8/21/03 4:02pm Message 7 of 14
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SHELBYVILLE, TN - USA
Joined: 7/5/2002
Posts: 3942
Vette(s): 1976 L48 auto

1978 L82 4speed

1994 LT1 6speed
welcome matt you may want to check the play in the spindles the wheel bearing could be bad if so you need to replace be for your spindle fail this is a pretty big job to replace | |wavey| |cheers| |bouncy| |cheers| |wavey| jim h.

|UPDATED|8/21/2003 4:02:43 PM|/UPDATED|



StingrayJim
NCM Lifetime Member #1936

Stingray's '76���������������������������� StingrayJr's '78���������������������������Lil Red '94

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Clunky rear

Posted: 8/29/03 7:25am Message 8 of 14
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JACKSONVILLE, NC - USA
Joined: 12/13/2002
Posts: 109
Vette(s): 1969 427/435 1990 ZR-1
Oh no not a jarhead!

Hows the stumps man?
Im at lejeune!
Hope you get the car fixed up good!


johnny


Johnny P 69 435 HP Tri Power 90 ZR-1 SSGT U.S. MARINES |IMG| http://www.c3vr.com/member_uploads/2101_2200/2191/sig%20pic.jpg|/IMG|

Clunky rear

Posted: 8/29/03 6:07pm Message 9 of 14
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TWENTYNINE PALMS, CA - USA
Joined: 8/6/2003
Posts: 245
Vette(s): 77 Vette L82, black.
The Stumps is still the Stumps. Too damn hot, but lately it's been flooded! Unbelieveable, flash floods and swift water rescues in the middle of the desert.


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Clunky rear

Posted: 8/29/03 7:26pm Message 10 of 14
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mongaup valley, NY - USA
Joined: 8/25/2003
Posts: 79
Vette(s): 1958 red-white 4 speed 283 1976 My project car L48 T350 1984 Daily driver 1986 convertable daily driver 1991 zr1 never been driven still in plastic
sounds like rear trailing arm bushings. when there bad it pulls out the axles making it sound like u joints. the best thing to do is to put the car in the air and so if the axles are pulled out. If, so its the bushings its a very involved job. i just did it on my 76. The bolt siezes to the inner sleeve. you will have to cut it out with a torch, refurbirch--replace trailing arms. press bushings, etc. while your at it you might as well do the upper control arm bushings and have the whole car aligned when you are done it is very costely and labor intensive.


RJG

in Forum: C3 Driveline Components


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