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Seat back adjustment

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Old May 10, 2019 | 11:05 PM
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Default Seat back adjustment

Tried a "search" came up 'dry'.....ok, the seat-backs in my C3 simply lean back too far......and I see no adjusting mechanism anywhere. So how do I get the seat-backs to sit a little more 'vertical' and less 'laid back'?
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Old May 10, 2019 | 11:10 PM
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On my 73, yo can turn (counter clockwise) the large round flat bolts on the bottom of seat back. If you need to raise the backs more upright, there are plates that were supplied by Chevrolet. Look at any of the vendors catalog, and you will understand how the spacers work.
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Old May 10, 2019 | 11:11 PM
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https://www.ebay.com/itm/Set-of-4-19...4AAOSwGWNUYZCJ

You should have a set of theses on the bottom of each seat back.
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Old May 11, 2019 | 10:43 AM
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On the clamshell seats, no adjustment. I rolled up a small towel and placed it between the top and bottom which solved the problem.
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Old May 11, 2019 | 04:49 PM
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On my 1980 I made 1/4" shims out of rubber to go under the seat mount in the rear. You can get anti vibe rubber pads in a variety of thickness on Ebay. 1/4" made a big difference in mine. GIL
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Old May 11, 2019 | 05:49 PM
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I also added a shim at the pinch point, much better.
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Old May 11, 2019 | 07:45 PM
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Originally Posted by ntfday
https://www.ebay.com/itm/Set-of-4-19...4AAOSwGWNUYZCJ

You should have a set of theses on the bottom of each seat back.
Nice....except the "list" stops at 1978. WHY ME? What exactly are these "shims" some are talking about, and don't laugh, but what is the "pinch point" where I should place some shims? I honestly do not see anyplace what ANYTHING can be placed.
Now laugh.....

Last edited by TuffShift; May 11, 2019 at 08:17 PM.
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Old May 12, 2019 | 06:38 AM
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I bought some 3/4 inch clear plastic tubing, cut it to match the width of the seat, then slit it open lengthwise. It fits right over the lip of the seat base
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Old May 12, 2019 | 06:52 AM
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Originally Posted by TuffShift
Nice....except the "list" stops at 1978. WHY ME? What exactly are these "shims" some are talking about, and don't laugh, but what is the "pinch point" where I should place some shims? I honestly do not see anyplace what ANYTHING can be placed.
Now laugh.....
My wife complained about the seat back angle so I put a 1" x 1.5" x 9" piece of wood between the bottom of the seat back and the base where they come together. Since we have lap and shoulder seat belts I was not too worried that the seat does not lock in place (it didn't anyway). I can add a picture to this post if you want.

Redvette2
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Old May 12, 2019 | 08:07 PM
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Last edited by Black4speed; May 12, 2019 at 08:12 PM.
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Old May 12, 2019 | 08:18 PM
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I posted a pic above, I just used those sticky things that you put on the bottom of
your furniture so you don't scratch your floor. Just cut them to size and put one on either side.
Now your seat back will be in more of an upright position.
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Old May 13, 2019 | 12:42 PM
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Lots of good ideas here - I need to do this as mine also leans back too far.
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