I don't believe any of the head bolts go through the water jackets on the LA engines. Truthfully, I've never used sealant on the head bolts and never had an issue! I'd make sure the leaks aren't coming from the header bolts because they do go into the water jackets. 65'
I was always under that assumption too, but I've heard several people say that a few of the head bolts aren't blind. Like you, I've never put any sealant on the bolts and haven't had a problem with them.
