Front Sway Bar - 64 Impala - Impala Tech
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post #1 of 6 (permalink) Old 12-09-2018, 08:36 AM Thread Starter
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Front Sway Bar - 64 Impala

Hello everyone,

My winter project is to rebuild my front suspension. I took everything off yesterday and now I want to order bushings etc. All the suspension parts on my car appear stock and actually look like the parts have never been replaced before since the ball joints are riveted to the control arms and there are yellow paint marking on some of the components. Anyway, I want to order the sway bar bushings. Inside diameter sizes I see include 18 mm (.70 inch) or 19 mm (.74 inch) from Energy Suspension. My current bushings are so worn, I can't tell which I size I need.

Does anyone know what the stock size bushing are?

Thanks in advance.
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post #2 of 6 (permalink) Old 12-09-2018, 11:08 AM
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The rubber bushings will wear, but the bar won't. Measure the outside diameter of the bar to determine the inside diameter of the bushing.

Big Dave
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post #3 of 6 (permalink) Old 12-10-2018, 09:02 PM Thread Starter
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Dave, I measured with my calipers and came up with .674 inches which is close to 17 mm and close to 11/16". Since GM did not use metric measurements in 1964, I'm guessing the bar thickness is likely 11/16" - can anyone comment about that based on their experience?

Here is the other issue: my current bushings have a ridge in the top of them (as seen in the attachment) which fits perfectly into the bracket. All the replacement bushings I see do not have the ridge in them. Should that matter to me? or does anyone know where I can get the EXACT original replacement bushings. I have been looking for hours and can't get a definitive answer.

Thank you.
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post #4 of 6 (permalink) Old 12-10-2018, 09:08 PM
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The ridge is just the pressed ridge of rubber being stuffed under pressure in a confined area. With heat and age the rubber gets hard and brittle (why it squeaks). and that is just rubber doing it's thing. You will need to be careful if you choose plastic bushings as they do not compress as easily. You can pull the threads out of the frame where the sheet metal screws clamp the bushing holders down.

You have the smaller size sway bar as opposed to the one used with the R40 heavy duty suspension option (police cars and wagons). It would be 13/16" in size.

Big Dave
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post #5 of 6 (permalink) Old 12-12-2018, 06:09 AM
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Do not toss the original bushing brackets! See this thread I started a while back on this subject. The brackets included in the energy suspension kit for the sway bar would not fit the offset holes on my 68. Your experience may vary, but don't get rid of them until you are sure!

Front sway bar bushing brackets? https://www.impalas.net/forums/13-brakes-suspension/35514-front-sway-bar-bushing-brackets.html
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post #6 of 6 (permalink) Old 12-12-2018, 09:41 AM
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Quote:
Originally Posted by 68WASAGOODYEAR View Post
Do not toss the original bushing brackets! See this thread I started a while back on this subject. The brackets included in the energy suspension kit for the sway bar would not fit the offset holes on my 68. Your experience may vary, but don't get rid of them until you are sure!

Front sway bar bushing brackets? https://www.impalas.net/forums/13-brakes-suspension/35514-front-sway-bar-bushing-brackets.html
I had to drill and weld a nut to the back of my frame to accept the wider spread holes when I increased my front sway bar size to one and a quarter inch bar. The self tapping screws supplied pulled out on a hard corner, but once secured the car cornered like a slot car on turns.

Big Dave
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