[69 Post Sedan]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ryan1969Chevelle</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 69 Post Sedan</div><div class="ubbcode-body">Our machine shop bakes and blasts the block. They install the freeze plugs, I prefer brass over steel, then mount a steel plate to one side of the block, where the head mounts. They apply 50 pounds of air pressure and watch for any loss of pressure. After that, they do the same thing to the other side. Much more affective than magnaflux. Magnaflux is good for checking around the main saddles.....areas where there are no coolant passages.

Kurt

The cost is $150 </div></div>

Thanks Kurt!!

Do they do this to cylinder heads as well?

Ryan </div></div>

Yes they do......it's about $70 for both heads.