Are you using moly-lube or 30wt oil? The TQ specs are different for each. I can tell you now that if you're going with moly, the torque specs you're using are way way way off. Over the phone, they told me that I should be torquing my 1/2" studs to 90 lb-ft. 302Ws use 7/16" bolts, though. So unless you've had everything tapped out to 1/2", I'm guessing you're running 7/16"s.
So, you're going so far passed yield that you should pull all of the bolts back out, including the ones you've already torqued down. Once you pass yield, it actually hurts the clamping load. Also, when the heads go through heat cycles they expand and coupled with cylinders at full pressure, the added forces will stretch the bolts. That's a normal process, and bolts are supposed to return to their original length when you remove them. However, once you've gone passed yield, they will not. So when the bolts will stretch, they will not return to the proper length, and you will be increasingly likely to develop sealing issues at the head-gasket.
I know you didn't ask for that explanation, but I just wanted to dissuade you from any notion of just replacing the bolts on the side you're breaking them. Call ARP directly and ask them what you should be TQing them to. A quick glance at their catalog indicates to me, that the numbers you are using are way off, even with 30wt oil.