Does anyone have an un-molested 69 that can look at the frame stand bolts. The AIM shows them all going in one way bolts on top nuts on bottom? I took mine off the frame and the 2 top ones had the nuts on top and the lower the nut was on the biottom. They looked liked they were never touched. I'm curious now.

Ive always found them to be per the AIM.

my 70 has the bolts as you described. ed

Here's mine last year with 25 years of dirt. The bolts have never been touched.
http://epitomesrebuild.com/images/210.JPG

Like Freds pic above, the bolts go into nuts in cages inside the cross member, and If you stuff a nut or a cage it is a real mission to bolt down the mounts.

I think I remember a pic Charley posted of an unmolested car, and two bolts were down and one was up. Don't remember which was which, but I'd guess the lower one was up.

I have a 68 SS - L48 car. The car has never been apart. The top two bolts of the stand has the nuts on top on both sides. The car was built in CA.

Think about it..these cars are built on a production line, and if you have ever dismantled one doing the reverse of thwe production line, one gets a huge appreciation just how much thought went into it..
There is no way the nuts would be on top....the only reason for them to be so is the cage/nut has falled off inside the chassis....putting the bolt up with nut on top is far easier than having the bolt on top and trying to get the nut on and hold it....as I said above "it a bitch of a job"

I keep a elcheapo chinese set of openend/ring spanners and socket sets...when a fiddly 'job' comes up, I dont mess around, I take one of those spanners/sockets, bend/ chop/ weld to make a custom tool....like getting to the hold down bolt on the dizzy, and a few other places.

I think mine did not have cage nuts, used regular nuts.

Keel... I saw another Van Nuys 69 today and the bolts were like mine and yours.

When these cars came down the assembly line, I believe anything could of happened. I'm sure if the bolts were upside down, it would not be considered defective.

I just took apart a friends 02C Van Nuys Z28 for paint, and in fact just got back from the body shop were the car is and pulled the front clip apart and off today. The drivers side frame mount has the 2 upper bolts upside down also, I can not say Honestly it is 100% original but it sure looks like it.

My own 06A Norwood Z28 has them all in from the top and they are unmolested/original.

JMO - I am pretty certain they just used regular nuts like Unreal Posted, I have never seen cage nuts and I have restored lots of these cars when I worked at various Corvette/Camaro Restoration Shops for the last 35 years.

It has to be a Van Nuys thing the 2 upper bolts have the nuts on top and the loer one has the nut on the bottom with kind of a thick washer.