The info here might help you.
C3 corvette jack stand placement.
4 ratchet style jack stands are very safe if used in the right locations.
You also want to ensure it s thick enough that the jack never comes in contact with the body of your corvette.
Corvette jack stand backup by froggy thanks for 2 million views.
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Position your jack and lifting pad under the frame rail shipping slot reinforcement.
C3 corvette forum c3 1977 corvettes all c3s general discussion jacking up your corvette moderators.
Make sure you only use a service jack that has a lifting pad diameter of 2 5 inches 64mm or smaller.
I prefer to place them under the front control arms rather than letting the front end cantilever over towards front.
Jacking up your corvette read 6223 times feb 21 st 2005 at 3 03pm.
The manuals are an invaluable tool for a gm car owner.
Attempt all work at your own risk.
Lift your jack slowly and carefully.
C7 corvette lock in leave in jacking pads pucks they are jack stand pucks and there is also a quick youtube video showing where they are placed.
The big challenge often is that the prefered jacking point is the same place you want to put the jack stand.
My c3 c5 manuals are quite specific to proper jacking lifting blocking points.
Never use on asphalt first off keep them as far front and as far back as possible.
Sorry i don t have a c4 manual.