6.2 L87 (not LT1) discussion

[SS71SS24]

Originally Posted by olrocker

Of course even though I knew mine was built in Tonawanda I still pulled my engine cover off to look lol

Curious as to how you know where your engine was built. After breaking down my V.I.N., it doesn't distinguish which engine plant. Does your passenger side head pad say "T" or "TOR" or some other code?


Right now, I'm a thousand plus miles from my 24 SS vert M6 and just killing time...

[m6-lt1]

Originally Posted by SS71SS24

Curious as to how you know where your engine was built. After breaking down my V.I.N., it doesn't distinguish which engine plant. Does your passenger side head pad say "T" or "TOR" or some other code?


Right now, I'm a thousand plus miles from my 24 SS vert M6 and just killing time...

LT1’s were all built at the Tonawanda plant aside from a small batch of engines assigned to manual transmission cars for MY2020-mid 2023.

[Capricio]

Does having an engine built/assembled at a particular location (tonawanda) imply the cranks/bearings were machined from a different mill than an engine assembled at a different location (bowling green/spring hill)?

I assumed all the cranks/bearings same from a sole source, regardless of point of assembly. Still unclear whether or not LT1s got the exact same bearings as L87 but people say the part numbers are all the same, so... I dunno.

The defective crankshafts and connecting rod bearings for the 6.2L L87 V8 engines, which prompted a massive recall of 2021-2024 GM trucks and SUVs, were sourced from a supplier located in Mexico.

Crankshaft Supplier: The problematic crankshafts were manufactured by Questum Macimex in Mexico.

Connecting Rod Supplier: The connecting rods were provided by American Axle & Manufacturing.

Root Cause: The issues stem from machining defects, specifically improper surface finishes or incorrect dimensions on the crankshafts and sediment in the oil galleries.

Engine Assembly Locations: While the parts were sourced from these suppliers, the L87 engines themselves were built at GM's Tonawanda, New York; Spring Hill, Tennessee; and St. Catharines, Ontario plants. Some reports specifically point to the St. Catharines plant for assembling the defective units.

There is no information in the recall documents that definitively states Questum Macimex supplied the LT1 crankshafts, or that LT1 engines are part of the current L87 recall.

[olrocker]

Originally Posted by SS71SS24

Curious as to how you know where your engine was built. After breaking down my V.I.N., it doesn't distinguish which engine plant. Does your passenger side head pad say "T" or "TOR" or some other code?


Right now, I'm a thousand plus miles from my 24 SS vert M6 and just killing time...

Since I spec ordered my car and bought it brand new with 2 miles on it I have the window sticker which tells you engine and trans build locations.

[SS71SS24]

Originally Posted by olrocker

Since I spec ordered my car and bought it brand new with 2 miles on it I have the window sticker which tells you engine and trans build locations.

I spec ordered mine as well and have looked over the window sticker. Mind I ask where the engine plant is located on the sticker? Thanks!

[SS71SS24]

Hi olrocker :
Just found what you said. Engine US, Trans US. I feel better already! Not a Canadian sourced 6.2L !