Does a Chevy cavalier 2002 2.2L have an overhead valve or a dual overhead cam?

is it an ecotech? if not its a pushrod not a overhead.

yes most of the time if your timing chain breaks the valves are junked especially motors with dual overhead cams with 24 valves like the 3.1

The eighth digit in the VIN number - a code 4 is a 2.2 and a code T is a 2.4 engine.
The 2.2 is an overhead valve engine, the 2.4 is a double overhead cam engine.

I do not have a diagram but i do have a site with very detailed instruction on how to set the whole thing up correctly, just click HERE

There is no such thing as a dual overhead gasket or a single overhead gasket.... there is, however, the existance of a dual overhead 'cam' and a single overhead 'cam'...

Please restate your question

Unfortunately, your question is very vague and hard to understand.

16 or 32 cam?
Usually your engine will have twin cams, or single cam.
Overhead cam(s) or not. You could determine if your engine
is a 4 or a 6 cylinder, and then you will generally find out how
many valves the engine has.

If you are in a 4 cylinder car, you probably have 16 valves if you have a twin cam engine.
If you have a single cam, 4 cylinder engine, then you will usually have only 8 valves.

The only way that you could end up with 32 valves, is if you have a dual overhead cam, v-6 engine.
Each head will have two cams, and each cylinder will have 4 valves then.

I hope that this is what you were trying to ask. :)

-Jackson
http://urbanscooters.com/

Look at the 8th digit on the vin #
3 = Duel
P = Single

no, this is a conventional pushrod engine.

my first thought is maybe its time for your third battery. I would test it first thing

Pretty easy to tell even without taking the valve cover off.
If it is a dual cam, then the spark plugs are lined up right down the middle, between the 2 cams.
Which is optimal.
If it is a single cam, the plugs have to be off to one side, on an angle.
Which is not as good.