Done some research. I will list all the items you should be looking for and links the the quests to get them. Also I will link a PvE Arms spec. j This IS NOT my own words. The gear list I looked up everything and compiled that list. I only listed the items that should be changed out. Everything not listed is fine.
Mod used to maximize the effectiveness of this spec: http://wow.curse.com/downloads/details/7960/
Spec:
This is an Imp Slam build.
http://www.wowhead.com/?talent=LV0tzAbog0dZVx0V0gRc
Spec Info:
Slam Rotation
Now that you have your build and your mod you need to learn your rotation. This is the hardest part of of being an Arms warrior as your damage is directly related to how well you can execute this rotation. Slam resets your auto attack swing timer so when you use the ability is crucial. Here is how things break down:
You want your slam to start every swing as soon as the auto attack happens. To do this you need to have Quartz activated and displaying your swing timer. Ideally if you have 0 latency you will hit slam as soon as the swing timer finishes. If executed perfectly you will only loose .5 seconds from your auto attack and you will be maximizing your potential damage. Unfortunately most people do not have 0 latency so to maimize your rotation Quartz has another very use feature to help you avoid latency slowing your rotation.
When you hit your slam button Quartz will display your latency on the Slam swing timer. Remember this number every time you slam. For example if it says 300 MS then you watch your swing timer and when there is 300 MS left in the swing timer hit slam. When done correctly the slam will start as soon as the auto attack happens. The problem here is that if you jump the gun even a little you will loose your auto attack and that is much worse then being a little late on the slam. As you do this more and more you will develop a feel for it and it will get a little easier.
Now that you got the Slam part of the rotation now you need to weave in your Mortal Strike, Whirlwind, and shouts. There is an easy rotation for this:
Auto attack --> Slam --> Mortal Strike
Auto attack --> Slam --> Whirlwind
Auto attack --> Slam --> Mortal Strike
Auto attack --> Slam --> Demo Shout/battle shout
Now do not be worried if you do not have the rage to do the full rotation every time through. Slam is your priority. Slam every attack then if rage is left over go to the rest of your rotation. If I slam and then do not have rage for for a MS or WW I will use the available cooldown to bloodrage to give a little boost to the next rotation.
The last important thing to realize for this rotation is that you can not push you hasted attack speed past 2.5 seconds. Because of your cooldowns even if you push your attack speed past 2.5 seconds your rotation will still take 2.5 seconds and you will loose all the haste past that point. I use a 3.5 speed sword and have 3/5 Flurry and the Gruul trinket. When The trinket is procced and Flurry is up my attack speed is 2.52 seconds. So I make sure to avoid any more haste at all as it would have no effect on me.
Improved Demoralizing Shout:
This is something that to me is very important. That is because for a warlock to safely be able to use curse of recklessness on a raid boss someone in the raid needs to have 5/5 improved demo shout. This falls to arms warriors for several reasons mainly because unbridled wrath is very lackluster for an arms warrior so we are not loosing much. We also have room in our attack rotation to use demo shout. Curse of recklessness adds 800 armor penetration for the entire raid so it is very important for raid dps. If you raid with only 2 locks or someone else in the raid has improved demo then do not worry about it.
Stats:
Hit Rating: The first most important stat for pve arms is hit rating. You will not have acess to percision so the cap for all your attacks to hit a raid boss is 142. Getting to this level is very important as it is easy to obtain and provides the cheapest item budget point to dps increase ratio there is. People that know me might be shocked to hear me say this but if you have to Gem for it. 142 is not a huge number however and it is obtainable usually without even trying once you have acess to good gear. In fact it sometimes becomes a juggling of gear to lower your hit so you do not go over the cap.