Quote:
Originally Posted by 427
Blown up engines are most likely connected to people altering the tune and adding more load than the parts can take. The cal guys at GM are not fools, and they don't want the car slow. They are limited by engineering data telling them what level the parts can take, and they stay away from anything by the edge.
Kurt
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I will agree with everything you said, but I will add I do think that "bad batches" of parts contributed a lot early on in the LTG production cycle. There were known-bad batches of pistons, bearings, and even way too smaller gapped top rings that all contributed to failures in the 2013-2015 engines.
By 2016+ they had everything worked out and as you stated, I think the majority of failures of 2016+ engines rests solely with bad tunes. People trying to run E85 (again a hack on this engine), bad driving, faulty parts (sorry a bypass valve change from stock is not proper and changes the parameters the computer expects to control) and any number of other factors contribute.
If you drive the snot out of a stock engine with no mods, it just flat out won't break as long as you don't do something stupid (ie, over-rev). Especially on an automatic I think anyone would be hard pressed to damage the engine no matter how hard they pushed things as long as it was well-maintained. And that means following the "competition" parameters of 99+ octane fuel and extra oil in the crankcase if you are going to be driving it as if you are in a competition (in other words, driving the snot out of it no matter what/where).