Check this out. A comprehensive list of most tanking gear, minus a couple items that seemed to have gotton left out.
http://www.tankspot.com/forums/f97/3946 ... -list.htmlOutside of that, theres blacksmithed blue items starting at 75+ all over the auction house from people leveling smithing. Those may/may not be on that list as well, but you can also use a wowhead filter to plan your shopping list.
http://www.wowhead.com/?items=4&filter= ... rv=0#0-2+1Some of these are rep items. Like the Wyrmrest accord items. AS you level through northrend, make sure to hit these factions and complete the quest chains to help your toon with reputation