I don't mean to sound like a dick, but that EV spread is fail. The idea of Bulky Gyarados is to use it differently then Offensive Gyarados. A compromise is selling the set short. It just won't sweep like offensive Gyarados, and a 216 HP Gyarados isn't all that physicall bulky without defensive EVs. What about the times you DON'T have intimidate. Most things you do intimidate will be switching out anyway, but that doesn't keep phsycial Pokemon from fucking you over when you fail to KO them. Base 79 defense is mediocre. So instead of trying to make Bulky Gyarados more like offensive Gyarados, you should be doing the opposite.
Now the EV spread I suggested, and the EV spread Jumpman suggested on the original Bulky Gyarados are to serve a specific purpose, which is using Gyarados' ability and padding its defense with a ton of EVs to help slow down offensive threats. Sweeping is an AFTERTHOUGHT. However, the prospect of sweeping IS still there because of Dragon Dance.
So Bulky Gyarados needs to concentrate on defense first, and sweeping second. It is a double threat. Offensive Gyarados is just that... offensive. So stop proposing this "offensive bulky gyarados."
With that being said, the reason I suggested the change in EVs is because Garchomp is no longer the threat. However, bulky Gyarados originally I think had trouble because it didn't outspeed key threats like Gengar and Infernape. Now, I proposed increasing the speed to 244 or 245 because you outspeed Tyranitar before a DD, and Azelf, Starmie, and Raikou after. If you think Gengar is important to outspeed, then why not outspeed those three because they all commonly carry super effective electric attacks to dispatch of Gyarados? I don't understand why you wouldn't....
My EV spread ended up like this:
152 HP / 168 Def / 188 Speed <--- this should yield:
369 HP / 314 Attack / 236 Defense / 245 Speed / 236 Special Defense
Even defenses, next lefties threshold down.
So finally, I HAVE used the spread I proposed, in fact I posted a peer edit about it months ago and was completely dismissed by people who never even tried it. Dormin used that spread I made for him on his first successful team, and said it was more effective than an offensive Leftovers DD Gyarados because of its relative bulk, while keeping the same speed. So I ask you... Why would you 746 Attack help you against a Skarmory that just roosts to wear out or your damage or whirlwind you away? It may help you in the lategame, but most frail things are OHKOed by a +1 Dragon Dance with just a single layer of spikes and stealth rock, which is usually less than the amount of damage they have by the end of the match anyway... If your Gyarados counter is gone... guess what... either varient is going to sweep you anyway. If anything, pokemon will have a harder time getting past Bulky Gyarados when their counter is gone anyway.
Anyway, this was the peer edit:
http://www.smogon.com/forums/showthread.php?t=38990