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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Has anyone out there had issues with coolant coming up the head studs? I have heard that some stud holes in the block are blind, but some intercept coolant channels and that the head studs that go in these holes need to be sealed. Does anyone know which holes are blind and which are not?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks for any insights.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Mirek<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>’59 BT7<o:p></o:p></span></p></div></body></html>