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Old Jun 10, 2015 | 07:05 PM
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Default Front end bouncing around

Just got a 72 corvette and over the last 22 years had only 3,000 miles put on it and everything is pretty much original (70,000 miles currently). One of the first things I had to do was replace both inner tie rods and idler arm and also checked/repacked front wheel bearings. I have to also say the tires were new 22 years ago and still appear new and I was hoping to not have to replace. Anyway had the front end aligned and the car jumps around on bumps and some squealing of front left tire when really shouldn't. The tech took it out 5 times tweaking it for alignment so I know he was having trouble. Before I take it back and have it redone my thoughts are as follows: the tires must be replaced (22 year old rubber) and while the shocks seems to dampen properly when I push down on the front I should go ahead and replace as the shocks may be original. Seems really hard to tell whether good or not. Is there anything I may be missing? The tech never indicated any issues and this was a new car Chevrolet dealer.
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Old Jun 10, 2015 | 07:29 PM
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Originally Posted by sauterindy
Just got a 72 corvette and over the last 22 years had only 3,000 miles put on it and everything is pretty much original (70,000 miles currently). One of the first things I had to do was replace both inner tie rods and idler arm and also checked/repacked front wheel bearings. I have to also say the tires were new 22 years ago and still appear new and I was hoping to not have to replace. Anyway had the front end aligned and the car jumps around on bumps and some squealing of front left tire when really shouldn't. The tech took it out 5 times tweaking it for alignment so I know he was having trouble. Before I take it back and have it redone my thoughts are as follows: the tires must be replaced (22 year old rubber) and while the shocks seems to dampen properly when I push down on the front I should go ahead and replace as the shocks may be original. Seems really hard to tell whether good or not. Is there anything I may be missing? The tech never indicated any issues and this was a new car Chevrolet dealer.

Tires degrade over time and it is recommended they shouldn't be used after only 5 years so your 22 year old tires are just plain dangerous to use.
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Old Jun 10, 2015 | 07:32 PM
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Originally Posted by toobroketoretire
Tires degrade over time and it is recommended they shouldn't be used after only 5 years so your 22 year old tires are just plain dangerous to use.


Umm, you need new tires. Like yesterday.

Replace your shocks with Bilstein.

Thank me later.

Edit: Tires are something you should be very very **** about.
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Old Jun 10, 2015 | 07:48 PM
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Originally Posted by Chinaski


Umm, you need new tires. Like yesterday.

Replace your shocks with Bilstein.

Thank me later.

Edit: Tires are something you should be very very **** about.




Yea I thought it was the obvious answer and I will check out the bilstein shocks. Was concerned about any idiosyncrasies that there may be with this car regarding my issue. thanks
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Old Jun 10, 2015 | 10:26 PM
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PS ?

Check valve balance.
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Old Jun 11, 2015 | 07:20 AM
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Originally Posted by wombvette
PS ?

Check valve balance.


it is PS and never considered that. It just seems more than the tires and shock even though they contribute. Wants to skip to right on bumps.
tks
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Old Jun 11, 2015 | 07:42 AM
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With 70k miles and being 43 years old you probably need new ball joints, bearings, rubber bushings, shocks, etc., along with the tires. I'm guessing thats why the tech is having a problem aligning it. Everything is worn and flopping around.
If you fix it right the first time, you'll be done with it.
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Old Jun 11, 2015 | 12:00 PM
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Don't forget the REAR suspension. Any tech can do the front end "safety check" and alignment...BUT the rear suspension/alignment is unique to 63-82 vettes!
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Old Jun 11, 2015 | 12:47 PM
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Originally Posted by mikem350
Don't forget the REAR suspension. Any tech can do the front end "safety check" and alignment...BUT the rear suspension/alignment is unique to 63-82 vettes!
Yes, thanks for the comments. The rear end is another story and plenty in the forum already to educate myself on that one! Already did one axle shaft but have concluded need to replace trailing arms, other half shaft and universal joints on the driveshaft to make it like new. Along with new rotors once I upgrade it to power brakes. That will be my winter project and right now just want to make it safe and drivable at reasonable cost. I'm sure I will be posting to make use of the experience out there.
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Old Jun 11, 2015 | 03:27 PM
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Check the front of the frame all over for cracks and broken welds. It does happen and can make the car really squirelly.
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Old Jun 11, 2015 | 07:36 PM
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Originally Posted by Chinaski


Umm, you need new tires. Like yesterday.

Replace your shocks with Bilstein.

Thank me later.

Edit: Tires are something you should be very very **** about.
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Old Jun 21, 2015 | 11:04 AM
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Default Replaced tires and front shocks

Replaced the tires and front shocks (w/Bilstein) and everything seems as it should be. Combination of the softness in the original shocks and the apparent hardness of the tires seem to have been the problem. I would have never guessed the difference it has made. thanks for the input!
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Old Jun 21, 2015 | 02:35 PM
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Good News, now you can really enjoy your Vette!

Strange nobody mentioned adding a spreader bar
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Old Jun 21, 2015 | 05:44 PM
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Originally Posted by mikem350
...Strange nobody mentioned adding a spreader bar


OK, I'll mention it. IMHO a spreader bar is one of the Top 5 improvements a C3 owner should consider making.
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Old Jun 21, 2015 | 05:51 PM
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What about the control arm bushings? They are one of the first things to go and would cause the front end to be sloppy and hard to align.
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Old Jun 22, 2015 | 05:02 PM
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I had a bouncy front end and after some searching it turned out one of the lower shock mount bolts had no more threading.
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