Fixing the LT1 intake manifold leak

Check out these pages too, they pretty much have the procedure:
http://www.projecttransam.com/projects2.htm
http://WWW.CAMARO-SS.COM/oilleak.html
http://www.oocities.org/MotorCity/Downs/4013/ol.html

Things I wish I had known before I fixed mine:

You need 7/16" and 3/8" fuel disconnects. With the right ones, they come off really easy. With the wrong one, it is  pretty much impossible. I wouldn't try it without the right ones. I had to manuever the fuel rails under the wiring harness  in the back to get them out of the way. You don't want to do that.

Make sure you know what type of gasket you want to use, and what sealant, RTV, or spray sealant* you want to use. I used Permatex Ultra Copper on mine, but the black would probably be just as good. Don't use the blue. Talk to some people who have done this succesfully, and have had their gaskets last. You probably want to put some RTV on the gaskets, I don't know what would be best to use, but I have heard that some gaskets, without extra sealant may leak into the intake ports. Be careful with the spray on gasket sealants, they stick to the manifold and heads, and you might  have to resurface both if you needed to do the fix again. *I've messed with some of these things since I did mine, and I wouldn't use the spray sealant, I put some on a test piece of aluminum, and it was extremely hard to remove. It would make the next time very hard, and the gaskets should seal by themselves anyway. You can spread a thin coat of ultra copper on the gasket if you want.

If at all possible, let the engine cool at least 3-4 hours before you start your work, I had to start work on mine when it was hot, which really made it a pain, since these engines seem to stay hot for 3-4 hours.

If you haven't already, I would suggest doing the throttle body bypass, it is really easy and requires no extra work. See http://www.westol.com/~brettd/corvette/tbcool.html for more info if you need it.

Make sure you have plenty of time. You don't want to feel rushed. I took about 10 hours to do my intake, tranny mount, oil change, clean the TB, and !TB, but I wasted at least an hour fooling with the fuel lines and fuel rail because I didn't have the right disconnect, and I took my time on everything else. I think I could do it in about four or five hours now.

Make sure you know where all the vaccum lines you disconnect go, and be careful with the little rubber boots on the end of the lines, one of mine fell off somtime when I was working on the intake, but I found it sitting on the back of the block. All the electrical connections have different size sockets, so you don't have to worry about getting them mixed up. I thought it was pretty easy to put them back where they went.

I put a new gasket on the TB, and probably should have put one on the EGR pipe, they only cost like $.50.

I used blue locktite on the intake bolts.

On my car, there was some dust around the sides of the intake on the heads. I would use a shop vac to blow it off before removing the intake, its a pain to try and keep it out of the lifter valley and intake ports once the intake is gone.

Get a friend to help you lower the intake back onto the engine once you have the new gasket and RTV on, it would be really hard to do it by your self.

Hope this helps!
Steve