Check your torque wrench, lol.
I had, well still have but don't use, a craftsman torque wrench for 25 years, worked great...........for most of those years.
Blew rad hose on my 4.0l, drove it home, cracked a head, bad idea to drive it home, lol.
Replaced the head gaskets and 1 head.
Ran great for 9 months
Blew head gasket again, well I ain't perfect so............maybe I missed something.
Checked block, redid heads gaskets, heads were fine, I didn't drive it hot this time.
9 months later................blew head gasket, WTF!!!!!
I ain't perfect but like to think I ain't stupid either, stupid is when you don't learn from your mistakes, just keep repeating them, lol.
"A poor workman blames his tools", well.......put the craftsman wrench in the vise and tested it, OH MY almost 30ft/lb light, so final torque was 30ft/lbs light for the heads.
Lasted 9 month or so and blows.
Bought a new torque wrench, been a few years now, no problems.
But back to your situation, I would just plan on redoing the heads, check the block for flatness on that side, but don't think the two are related.
Head gaskets don't just blow, usually there is an overheating incident that crushes the gasket, or pinging eats away at the gasket.
Last edited by RonD; 06-13-2016 at 09:57 PM.