But they don't all have hg issues. Mine has 240k without issues. Some do some dont. Luck of draw. Like cracked LBZ pistons
LLY headgaskets will eventually let go just like lb7 injectors. Just when is the question
So the LLYs seem pretty good I don't see a lot of major problems with them. What about the LBZs? I'm told that's the best year Duramax?
This. None are perfect. If I had to do it again I'd buy my lly all over again. It was a really good truck for the first year and 35k miles. But the last 6 months or so I've turned up the wick and pushed the stock trans for more than it should be capable of holding. Mines got 181,000 miles on stock gaskets and bolts. It sees 30+ pounds of boost regularly. It'll be pushed harder when the tranny is upgraded.Stock gaskets and studs in my Lilly... Only 600 horse though for the last three or four years. 92,000 miles.
I have heard of people having HG issues with all of them. Bad injectors, cracked pistons, HG, Bent rods take your pic each version has its demons... If you push on them hard enough they will show.
I'm not looking for that many horses. It will be a daily driver.
It's just to dang expensive to keep installing new injectors every 30,000 miles.
Ist set in my engine went 32K miles, but those were the 1st style ones for 01. The replacments were put in in 02 and had 130K miles on them when I pulled the engine to do a swap, and all 8 were still good. I got the bright idea to replace them, and 3 sets later got a good set. Got about 60K miles on my current set, and still good as far as I can tell. If they go 100K, I will be happy.It's just to dang expensive to keep installing new injectors every 30,000 miles.
Ist set in my engine went 32K miles, but those were the 1st style ones for 01. The replacments were put in in 02 and had 130K miles on them when I pulled the engine to do a swap, and all 8 were still good. I got the bright idea to replace them, and 3 sets later got a good set. Got about 60K miles on my current set, and still good as far as I can tell. If they go 100K, I will be happy.