Gm l87 engine failures?

[The motor guy]

Looks like they changed up the 6.2 that I always thought was called an ls. Now it's an L87. When are these manufacturers going to stop changing designs that work?

 

[ls1mike]

Looks like they changed up the 6.2 that I always thought was called an ls. Now it's an L87. When are these manufacturers going to stop changing designs that work?

Well there was a L92, L9H, L94 LS3, LS9,LT1, LT4, LT5, L86, L87. These are LS and LT based 6.2s. I am probably forgetting some. I know I am.
All 6.2 liter displacement engines.

L87 replaced the L86 in GM trucks and SUVs.

L86 and L87 are almost identical but have different fuel management systems. AFM VS DFM

Edit: to answer your question. Never. They have to adhere to EPA, CAFE and government standards while trying to get better.
If they didn't we would still be driving flat head 4s. I don't need that in my life.

 

[The motor guy]

I just saw an article online saying they were having complete internal failures. I assumed that was the latest engine. I'm not a gm fan unless it's a c5 vette

 

[dippschtick]

4 miles might be a record.

 

[The motor guy]

4 miles is usually what they have before they leave the lot

 

[JavierH19]

Apparently it covers all L87's as far as the scope of the nhtsa's investigation which is 19-24 but its suspected to be the ones produced in 22 and 23. I wouldn't be surprised if my 21's L87 is subject and could blow. It's got 43k but It's definitely full of oil.

 

[fantastic]

Well, it would perhaps identify sufficient change to the engine that they would want to know for the evolution of the engine. Requirements change. Seems logical to me.

 

[clinebarger]

4 miles might be a record.

Pure speculation on where this engine came from....The "Heat Tab" alone makes me question it's origin!

The damage is inline with a Hydro lock event in my opinion.

Side note.....Using a two jaw puller on the balancer is pretty hokey!

 

[clinebarger]

Apparently it covers all L87's as far as the scope of the nhtsa's investigation which is 19-24 but its suspected to be the ones produced in 22 and 23. I wouldn't be surprised if my 21's L87 is subject and could blow. It's got 43k but It's definitely full of oil.

I wonder if it will boil down to oil consumption being the root cause?, AFM/DFM 6.2L's are known to consume more oil than their 5.3L counterparts.

Far as I can tell....Gen V rotating assemblies have remained the same since 2014....The DFM block is different, But the same differences exist in both L84 & L87 engines.

 

[Exhaustgases]

Looks like PM fractured con rods doing what they are designed to do best.