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Who trusts the 25's with the revamped 6.2l

MTY55
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Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted
1 hour ago, PunchT37 said:

Brand new engine tear down? Wonder why that one was chosen? That engine wouldn`t make it off the assy line and definitely not last the 1`st  PDI test drive. If that pic is real.

I agree that's not out of a new engine that crank has seen some miles mostly the way the oiling ports are worn.

MTY55 Enthusiast

MTY55

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On 8/1/2025 at 10:32 AM, Z45 said:

My brother's been driving a 2025 Sierra SLT CC 6.2L since last fall and its going strong.   I don't believe rumors that cranks made at Tonawanda are just as bad. If that was the case, all the Vette engines, 6.6L and 5.3L cranks they produce would be bad.  That BS is from people with an axe to grind with GM so they make stuff up.  

 

GM was doing everything to reduce the US workforce so the contracted out to foreign companies and it came back in bit in the you know what.  

I retired from the Tonanwanda Engine plant. I worked in the crankshaft dept. The quality checks we made were held to very strict tolerences. I think the cranks produced at Tonawanda will be great.  I'll have living proof just picked up a 25  Sierra 1500 Denali 6.2 Tuesday. Runs great.

BIGDOGx Senior Enthusiast

BIGDOGx

Posted
Posted (edited)
On 8/2/2025 at 10:15 AM, Silverado4x4 said:

I agree that's not out of a new engine that crank has seen some miles mostly the way the oiling ports are worn.

Here is the link to The Motor Oil Geeks YouTube channel if you two want to go in and call him a liar! Like I CORRECTLY STATED, it was a brand new never used engine!

 

https://www.youtube.com/post/UgkxOoK_u2eUoqt7OR57ycVxpJ5svANfOCQa

Edited by BIGDOGx
Z45 Senior Enthusiast

Z45

Posted
Posted (edited)
On 8/2/2025 at 4:16 PM, MTY55 said:

I retired from the Tonanwanda Engine plant. I worked in the crankshaft dept. The quality checks we made were held to very strict tolerences. I think the cranks produced at Tonawanda will be great.  I'll have living proof just picked up a 25  Sierra 1500 Denali 6.2 Tuesday. Runs great.

I had a new 1970 Chevelle SS454 (LS5) and on the chrome valve cover was this decal. 

 

tonawanda.jpg

Edited by Z45
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