First, this thread is for people who have no money and a small problem with their block. Buy some ARP bolts and pay professional to do it if you have money, if you don't have money, keep reading. They break because dirt in the thread on the bolt thats it, you apply pressure and they go. Get a wire brush and clean the hell out of them. If you drill, use a small bit something like 5/16. Auto shop people told me use 1/4 and ez-out. Ok, except I broke 2 bits both 1/4 and after I use ez-out on that I need to re tap the block. If you HAVE to drill use small bits first and I recommend a Powerbuild brand kit for head bolt removal. It looks like a square looking thing ez-out it a twist looking thing. Ez-out have more chances of breaking then Powerbuilt. My method required NO drilling just 1 special tool. ( I broke 2 bits btw, one was a Dewalt.) Without this tool, you might have to drill, interesting if people found other methods. Special Tool ---------> For those that have seen the movie Total Recall, there is a part where Arnold takes this red ball out of his nose with this gadget. This tool is the same, it looks like a pen, really small and you press the button and 3 metal things come out to grab something. What you need to realize is ----> even that they broke, you can still turn them, to get them out. For me personally it was a hard concept to understand. One dude from a machine shop told me this. " as long as they are not rusted, you can turn them with a nail or something small and sharp, to get them out". Except those nails don't work neither do sharp objects. What you need 1. Special tool ( I got mine from a computer repair type kit made by Fellows) 2. 1 can of WD40 3. Flat head screwdriver. long one. "99 cent store" one is perfect. 4. Hammer 5. Shop Rag 6. Flashlight with some fresh batteries, (people might look at you funny when you trying to get bolts out under candlelight.) How its done 1. Soak that hole with wd40 2. Take your flat head and place it directly in the center of broken stud 3. Smack it with a hammer few times, kinda lightly 4. Stick your shop rag to absorb wd40 5. Use your flash light to check inside the hole what exactly is there. 6. Deep in there you should notice that broken bolt 7. Use your special tool to grab it and turn it COUNTER CLOCKWISE, it will slip and slip and slip just have patience. Grab it, turn it, grab it turn it. 8. If it don't turn, use your flat head and place it between bolt and wall of the block( yes you can do that) and smack it not too hard on the side of the screwdriver. Then repeat process. It takes alot of time and being sober helps while doing this. Its about 1-2 hours per bolt.