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Jack stand placement

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Old Apr 6, 2017 | 01:24 PM
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Default Jack stand placement

I use the hockey-pucks to floor jack my car. Where are safe locations to actually place the jack stands once the floor jack is removed...realizing that the pucks cannot be the exact same location as the jack stands?

Already did a thread search and gave up after 10 min.
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Old Apr 6, 2017 | 01:33 PM
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Here is a good thread;

https://www.corvetteforum.com/forums...-wheels-2.html
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Old Apr 6, 2017 | 08:05 PM
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What I do is jack the front or rear with a 2x4 placed between the jack saddle and the cross member. Then I place my jack stands under the ends of the 2x4 and slowly lower the car until the jack stands are supporting all the weight. You can then jack the opposite end in the same manner assuming you have another 2x4 and two more jack stands. If you do it right you will have the car almost perfectly level so that you won't have to worry about it slipping off and the wood will distribute the load and protect the cross members.
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Old Apr 6, 2017 | 08:19 PM
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ReedZ provided a good link.

You must not be searching correctly. For future reference, go to Search > Advance Search > Select the Forum, i.e., "C7 Corvette" > Keyword(s), i.e., "Jack" > Seach Titles Only.

FYI: Nearly 200 threads appeared in .12 seconds, albeit, not all jack placement related, but most were... GL.
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Old Apr 6, 2017 | 08:24 PM
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... this might help: http://netwelding.com/Jacking_A_C7.pdf
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Old Apr 7, 2017 | 01:01 AM
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Originally Posted by sTz
Thanks. This is a key pic from that many page PDF about jacking a C7. I typically use the two red areas on the rear frame member or the two green on the front cross member to mount jack stands. I only use a pair either front or rear and will not support the car on only 4 jack stands. As noted in the PDF, that is not safe. If I want it level for changing oil etc I use home made stanchions under the rear wheels and jack stands under the front cross member.

PS: Just noticed something when posting the pic below. There is a cross hatched area just inside the front tires! That could be referencing the lower "A" frame as there is a location under the lower shock mount that could be a possible "acceptable point" for jack stands! I use plastic covers on mine so it would work fine. Will consider including when I update that PDF after I jack the Grand Sport when I make the 500 miles oil change.




Made from the 2014 Service Manual-Colored for Clarity.

Last edited by JerryU; Apr 7, 2017 at 09:00 AM.
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Old Apr 7, 2017 | 12:27 PM
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What I remember reading in the shop manual was that it cautioned against concentrating too much load on the crossmember in too small of an area and that is the reason I use 2x4's: to distribute the load over as much area as possible, not to avoid marring the surface.

So do your plastic coated jack stands are not going to do much to distribute the load. I would at least advise placing a block of something that is non-marring between the jack stand and the car.

BTW, my car has been jacked up many, many times and spent a lot of time up in the air using the method I've described and I've never had a problem.
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Old Apr 7, 2017 | 12:37 PM
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^^^^
Per the pic I provded from the Service Manual, the jack stand saddles are to be placed where indicated on the GM skemtic, not loaded in the center of the thin wall hollow beams on the C7, which are 25% lighter than the C6 and prior Vettes.

They don't say to use plastic covers, I bought them years ago. That are not a coating, rather thick flexible plastic more like heavy rubber that cover the jack stand arms.

This is not a closeup but provides an idea, the pads are yellow. Note although I made a wood crossbrace I still use wood pads only where GM says to apply the load, not in the center of the beam.

It's belts and suspenders but I'll release some pressure from the jack and even leave it in place where it allows access to what I'm working on. Even my dad would be happy and when I hit the car with my shoulder (something he made me do when I was 12 to 15) it would't budge! He had a friend die when a jacked slipped.




Jack stands placed on base of A frame allow a stable mount.

Last edited by JerryU; Apr 7, 2017 at 01:48 PM.
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