I am in the middle of doing the head gaskets on a 87 Cadillac seville 4.1 I am fixing up. The book says before putting them back I should coat the head bolts with "Camshaft and lifter prelube or equivalent" I can't remember the GM part number. what does this mean. I am a bit broke at the moment so would prefer to use the "equivalent". The bloke in my local auto store has never heard of this, maybe because I live in the UK, he said I could use oil, but the book says I have to make sure there is no oil or coolent in the bolt holes.
This is my first time doing this as I bought the car with the blown head to learn and I don't want to mess it up.

Also i have done some searches and have found that i can re-use the bolts if they are good. I have discovered that one of my head bolts is missing,and may have been for a while, can i just replace this one or the whole lot? i have read here that not putting bolts in the holes they came from is bad, how will this affect a new bolt? oh and an intake bolt is missing too. I assume these are available to buy and not discontinued?
Thanks.
Richard

The bolts and holes have to be clean. The no oil or coolant means just that, no standing oil or coolant in the hole. If there's oil in the hole you will be trying to compress it with the bolt, possibly cracking the block from hydraulic pressure. This is different than a coating of oil on the threads of the bolt.

I never heard of the bolts having to go in the same holes. Cam, lifters, rocker arms, and push rods should be kept together. Especially the lifter matching the cam lobe it originally was with. Rocker arms and push rods not as important but nice to keep together if possible.

The bolts and holes have to be clean and a coat of oil on the threads. (dip them in the oil and let it run off). It shouldn't matter which hole gets the new bolt but torque it down once before final assembly. This will "break in" the threads so you get a consistent torque setting.

Personally, I have always put the bolts back into the same threads from which they came, but it probably won't hurt anything if you mix them up a little bit. What you should look out for though are damaged bolts, which quite frankly on these engines, that's a rarity.

Lubing them with a light coat of oil is good as Zonie suggested, but any engine assembly lube should do the trick as well; it just depends on what you want to do and like stated, what you can afford.

Thank you for the advice.
I have one more question, one intake manifold gasket has a steel restrictor on the middle port and it says that it is needed for the right bank on 1983 and later models, but the old gasket i have taked off does not have one.
the instructions with the gasket say that it can be removed if not needed, so as the engine does not have this now, shall i remove the restrictor?