Dave's Auto (custom engine builder) tear down of L8T

[mrjulian416]

This guy is a custom engine builder, both diesel and gas.  He recently posted this vid of a tear down of an L8T for rebuild.  Seems to like a lot of what he sees

 

We Tore Down GM’s Biggest Gas V8… Here’s What We Found

 

It's a bit of a long video, bottom line it's a very well built engine but in this case, excessive heat in the rear cylinders can be a problem.

[No F-bdy Bs]

Like I've said before. Di and Carbon buildup is not that big of a concern. Engine had minimal buildup, and that engine was obviously not super well maintained. Do regular oil changes, and you're gtg as long as the rest of the truck lasts. Also, the High Pressure FP that people ****** about, but can't tell you why. 

Now, I wish they'd trash the variable oil pump. No real world issues with them, but I'll gladly eat whatever miniscule MPG it's saving me in favor of more oil at all RPMs. 

 

Curious to see his assessment of the 7.3 compared to the 6.6.

I expect he'll praise the port inj, but from a structural standpoint, the 6.6 is as robust as any engine out there. 

 

Not to take away from the 7.3.

I feel it's equally as good as the 6.6.

 

 

As to heat on the rear cyls, I'd have to see numerous examples before I'd say it's an issue. Especially not knowing the history of that engine. For all is known, they could have blown a rad hose, and ran it hot, and the 2 rear cyls may be the first to get hot in a low coolant situation, but not be an issue aside from that. 

Edited 6 hours ago by No F-bdy Bs