it may be an exhaust manifold gasket. when they are bad, they make a tapping soud til it heats up and semi-seals itself. it's one thing to have checked.
Most likely it's your valves in need of adjustment.
Check the oil. Failed lifters/rocker arms would not be uncommon.
Possible lifters that are bad that could explain your ticking noise. It should cost you nothing by stopping by an Auto repair shop and have them listen to your engine.
Its possible that this ticking sound is caused from driving fast for prolong periods. Its possible that its not the engine that is making the sound, but the exhaust system somewhere. I hear a ticking sound if I drive over 140KMh for long periods. It always stops once the car cools. I hopes this helps.
It is probably the lifters. I suggest using an engine flush and I have had luck with GUNK. Follow the directions on the can. You may have to do it every 30000 miles . I found that if I put a non Mitsubishi oil filter on my pu would start making that ticking sound
Usually it's the lifters in the engine making that noise until they become fully pressurized with oil, then they stop ticking, like on the 3 liter caravans.
Have valves adjusted.
Chevrolet stoped making camaros in 2002. They just released the new 2010 camaro.
battery is dead
Ticking is not that that big of a deal to require a new engine. If your engine is knocking, it is a big deal. Make sure your car is ticking first. Ticking is usually caused by the valvetrain of the engine when it is not properly lubricated. As the engine increases oil pressure the oil makes its way into the valvetrain and the sound should go away. If it goes away when the engine is warm, it's likely ticking. If it is ticking, it sounds like you might be low on oil. Add a half quart see if it goes away. Then check your dipstick to make sure your are in the "safe zone." On some cars, you need to go above the "full" mark (ONLY A LITTLE, at most 1 quart over, which is about the same as the distance from full to low marks on the dipstick). It may need more oil, but use judgment from there. Hope that helped. I do not think it is a big deal, if your engine makes ticking noise. I drive my subaru seit 7 years with such kind of noise and never had any problems.. Do not replace engine for such small thing, most likely is your hyd.lifter a bit noisy. So what :)) Good luck.
That is possible.
probably broken bearings