|
Mike,
Let me know if
you have any squeaking or other problems with them. I'm about to switch out my
rear control arms as well.
C
Craig,
I put standard rubber bushings in the
front. In the rear, I'm installing new upper and lower trailing arms made by
Edelbrock. They have polyurethane bushings. All the bushings have grease
fittings except the two uppers at the rear
end.
Mike
----- Original Message -----
Sent: Friday, August 23, 2002 9:53
AM
Subject: RE: [Chevelle-List] Help: Rear
end and driveshaft vibration problem
Mike,
Yeah, I'm
worried about mine as well. I was under there the other day looking at 'em
and they sure looked like their best days were twenty years
ago.
Where are you
getting bushings? I ordered front control arm bushings thru the local parts
store - Moog components. I gave a lot of thought to polyurethane bushings
but, after considering what I really use the car for, did not want to risk a
squeak problem. I don't "road race, etc., I just run around down and throw
down the occassional hole shot. If it developed a major squeaking problem,
tho', it would drive me postal. Also, I'm riding on 17" with KDW's so the
ride quality has slipped a bit from the original 14's!
So far, I'm
going with factory original parts but, as I just ordered the stuff last
night, I'm not "bacon" just yet. I'm open to ideas on the fronts or
rears.
Craig
Craig,
I'm not done yet. Work keeps getting in the
way.
I've pulled the rear end out completely,
installed the bushings, and have to clean and paint it. With current work and personal commitments, it'll be
another month before it's back on the road. I'm pretty confident that this
was the source of my vibration problem. With the driveshaft disconnected,
the shocks and springs out, and one upper arm removed, I could twist the
rear end about 6" by pushing down on one axle end. The original bushings
were mush.
Mike
----- Original Message -----
Sent: Tuesday, August 20, 2002
12:52 PM
Subject: RE: [Chevelle-List] Help:
Rear end and driveshaft vibration problem
Mike,
Have you
completed the bush swap yet? Any change??? I'm still fighting a
vibration in my '70.
Craig
Craig,
I have a similar problem with my 67 SS. I
think it's caused by worn, original bushings on all the trailing arms.
The vibration starts around 60 MPH. It feel strange and I think
it's the rear end rocking side to side on mushy bushing. I'm in the
process of changing the arms and bushings now, so I don't know for
sure if that's the source of the vibration problem. But with the
shocks and springs out, I can twist the rear very easily.
Mike
----- Original Message -----
Sent: Wednesday, July 31, 2002
10:43 AM
Subject: [Chevelle-List] Help:
Rear end and driveshaft vibration problem
Hello again, fellow Chevelle
owners. I had to unsub for a while due to vacation and some
seriously pressing business, etc. Anyway, I've been vexed with a
serious driveline vibration this summer that is defying all of my
attempts to fix. It begins in fourth gear around 2600 RPM and
increases in intensity up to 3200 where it smooths out because the
frequency is so high by then that it is not so annoying. My speedo
is out at the moment so I don't know the MPH but the vibration does
NOT change if I downship to third. Thus, I believe it is driveshaft
and rear-end related. It is vehicle speed related, not engine
speed.
I've installed a brand new
stainless steel driveshaft (from CCI in Detroit) and ujoints, double
checked it for runout (it's perfect), installed a new pinion flange
(again, from CCI), and I already had a new ring & pinion and new
Moser axles. The trans has been rebuilt and seems perfect. The motor
seems well-balanced and the front end components are tight (it does
not feel anything like a front-end problem anyway - it's not a
shimmy, etc., it is a vibration you feel in the seat of your pants
as well as the steering wheel). I even have new Edelbrock wheels
(409's in 17x8) and BF Goodrich g/Force KDW's, but there was no
change in the vibration from my old stock SS wheels and
old-fashioned meats. BTW, you can see a pic of the car
(unfortunately, with the old SS wheels) at www.neagroup.com/chevelle.htm.
Everything I've tried seems
to have improved the problem in steps. The most recent trick is I
flipped the driveshaft and it got a wee bit better but still no joy.
The pinion flange made a big difference, as did the driveshaft. But
it is still not smooth enough to cruise the expressway at 65 without
aggravation and worry.
I am open to any ideas any of
you might have. I am at a loss as to what to do next.
Craig Ellis
Port Huron,
MI
|
