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Old 08-15-2009, 05:11 PM
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1933 Chevy front end problems

Stock style suspension which is the straight axle with two sets of leaf springs. The problem is when you hit a dip in the road or good size bump the front end starts shaking and you pretty much have to stop the car to get it to quit. We put about a 3 degree wedge under the axle to tilt it back some. It got worse. The car drives like crap and when you hit the brakes it pulls to one side and then as you correct it and then let off the brakes it will send you the other direction in a hurry. It's kinda dangerous to drive. Super nice car but just a pain in the *** to drive. Any ideas?

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Old 08-16-2009, 12:46 PM
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Is this car gasser style with the front end up high?

Post some photos if you can. I would like to see the longitudinal angle of the springs at ride height, and what the steering linkage looks like.

It sounds like you have multiple problems. The shimmy could be due to lateral movement in the axle when you hit a bump. A pan-hard bar may help with that. Make sure all the spring bushings, etc are tight. A simple item to try is to increase the toe-in on the axle, that usually improves the situation you are experiencing.

The pull under braking sounds like a bump steer problem. Under braking the front suspension compresses and you go one way and when releasing the brakes the suspension decompresses and you go the other way. That may not be an easy fix. Again, photos would help.

Andy
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Old 08-16-2009, 07:04 PM
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Old 08-16-2009, 09:44 PM
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That is a good looking car, but photos of the steering and front suspension were what I was referring to...

Andy
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Old 08-17-2009, 09:17 AM
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I'll have to get some thats all I had on the computer.
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Old 08-18-2009, 08:12 PM
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angles ...

What is your caster and toe? Side steer or cross steer?
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Old 08-18-2009, 10:06 PM
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No idea, we took it to a guy that was suppost to be good at aligning straight axles but it drives the same didn't change a thing. It has a mustang gear box mounted just below the column and a steering rod going to the driver spindle and then another going to te pass spindle
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Old 08-18-2009, 11:41 PM
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That would be described as a side steer system. How does the length of the trailing arms on the front supension compare to the length of the drag link (the link from the steering gear to the spindle)? If there is a large difference in the length of the steering and suspension links that can be a cause for bump steer. If that is the case, unfortunately there is little that can easily be done to fix the problem in a finished car.

Do you have the alignment specs from the front end shop?

Andy
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Old 08-19-2009, 09:52 AM
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does it have kingpins?? could be worn out..common problem on tractors..new bushings and pins will take care of it if it has worn out pins..
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Old 08-19-2009, 11:27 AM
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It has new kingpins.
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Old 08-23-2009, 12:20 PM
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This could be a couple of things.... worn or looooooose wheel bearings or the front tires are out of balance. all it needs is a wheel weight missing and a front end will shake like crazy.
Good luck
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Old 08-23-2009, 06:22 PM
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front end shake

I think I would try tilting the axle forward at the top of the king pin. If you tilted it back at the top you gave it negative castor. It probably should have positive castor. Also does it have the spring shackles in the front or the rear of the springs? The springs with the leading shackles used to give a lot of trouble. Also if the camber is off you have to bend the axle to correct it and a lot of shops nowdays can't do this. you need to ask the guy what the castor, camber, and toe in are at.
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