its not pretty from the posts here.... but wouldn't there that fast... that's was just my "first guess". I would go check your tire again for things like a screw / nail where the head has been worn off... those can cause that sound. You indicate that its only on acceleration, if you stay at a constant speed, then there is no ticking, right? what about in neutral and revving... any noise. Is it possible that you are hearing "pinging" instead of "ticking".... which is related to pre-ignition or too lean a mixture? As it go thru gears (depending on what you means by "hard acceleration"), does the noise still continue with each change? Also check on your wires for cracks where perhaps arcing is occuring. Hopefully some other ideas will come forth. You probably need to isolate things a bit more. What about running is 4wd (high or auto)... does it change under these conditions (ruling out some form of transfer case issue). What about moving you steering during the acceleration... any impact?
