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rear end clunk

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rear end clunk

Posted: 11/16/06 4:14pmMessage 11 of 20
P
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Shenandoah, PA - USA
Joined: 10/18/2006
Posts: 328
Vette(s): 1982 Chevrolet Corvette
Was just wondering if it was possible to change that front mount without disconnecting the rear of the driveshaft... doesn't seem to be as much room in there as I thought Ermm PSU 982006-11-16 16:15:09
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rear end clunk

Posted: 11/16/06 5:57pmMessage 12 of 20
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Cadiz, KY - USA
Joined: 8/26/2002
Posts: 249
Vette(s): 74 Convertible

Rear tires in at the top.  Try this.  Jack up the rear of the car so the rear tires are off of the ground.  Once the tires are off of the ground, grab each rear tire at the bottom and pull out.  If there is more than about 1/4", the inner ends of your differential side yokes are worn.  Very difficult and not cheap to repair.  First you take the rear end out and so on.  On one thread above, the guy told you how to get the alignment close but if the side yokes are worn, you will not be able to adjust them far enough out to make the rear tires rest straight up and down.  Side yoke will not get better if they are bad and you will wear the inside of the rear tires out with regularity.  Good luck!  

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rear end clunk

Posted: 11/17/06 6:38amMessage 13 of 20
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reading this topic i was able to solve my rear end clunk too... already got a bit worried about the clunk since i had replaced almost everything..... during restoration.. solution was simply tighten the bolt on the front diff mount Thumbs%20Up
 
art-corvette
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rear end clunk

Posted: 11/20/06 8:59amMessage 14 of 20
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Lutz, FL - USA
Joined: 9/21/2006
Posts: 4
Vette(s): 72 Big Block Coupe 2nd Owner 92 Convertible 2nd Owner Lots of previous and all Manuals! The fun starts when all 4 are sliding!!!
Wheel Bearing play is around .001 - .008 and the yoke play on differential is supposed to be less than .030 (this is from memory so I could be off some).  If the yokes are worn, you have to pull the rear end and it gets expensive.  You might as well do all 6 u-joints, 2 yokes, and rebuild the diff.  If you need to remove the half shafts here is the approach I use:  Put rear of car in air on JACK STANDS!  Now disconnect the strut rods (they are going to probably need new bushings anyway), and you can move the wheels out enough to get the half shaft loose.
 
I just switched mine from 3:08 to 3:55 and it appears I lost 5 MPH for the same RPMs in 4th.  Car feels better though.  Good luck
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rear end clunk

Posted: 11/20/06 9:49amMessage 15 of 20
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Joined: 3/19/2005
Posts: 385
I have the same "clunk" when I go into reverse, as the car moves and warms up the clunk is not as bad if I need to use reverse again. I suggest you have your car aligned, front and rear, before you spend a bunch of money, might help. Welcome to the "Vette" world these babies are fun and EXPENSIVE. I promise they are worth it. Gene
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rear end clunk

Posted: 5/8/11 5:00pmMessage 16 of 20
r
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Joined: 4/23/2011
Posts: 24
Vette(s): 1981 Corvette L81
I havnt had my 81 very long but i must say this is by far the best  C3 forum, any question i have i find already posted with answers, print's and directions. think i found a home at C-3 VR.....
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rear end clunk

Posted: 5/9/11 4:48amMessage 17 of 20
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Red Lion, PA - USA
Joined: 10/27/2006
Posts: 1182
Vette(s): 1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic
Welcome Robert, You will find this forum to be the best. There are many great members that will lend a hand to help you in any way possible. Enjoy the site and the car.
Rodney

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rear end clunk

Posted: 5/9/11 3:57pmMessage 18 of 20
r
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Joined: 4/23/2011
Posts: 24
Vette(s): 1981 Corvette L81
thank you Rodney, i have wanted this car since 1981 i was 15 and said some day i will have that car and i love it..... ryn92120002011-06-02 20:23:54
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rear end clunk

Posted: 5/9/11 4:33pmMessage 19 of 20
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 2041
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Welcome Robert!!  I can help with 81 questions if you want.  Joel is the "guru" for everybody!!
DanHug  And by the way, Joel was describing the "Corvette Dance"  Squat in drive and hop in reverse!!!!  "You put your left foot in, you take your left foot out...."Rolling On The Floor Laughing
dskopp2011-05-09 16:37:09
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rear end clunk

Posted: 5/9/11 5:51pmMessage 20 of 20
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Joined: 4/23/2011
Posts: 24
Vette(s): 1981 Corvette L81
nice 81 Dan, i have it's twin.
Bobby.
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