Hey salguod,
I'm with you. I don't think I've seen anyone braggin' they're going out 7K to 9K before changing. Frankly, with all this discussion going on in all the Lambda forums on timing chain failures AND the fact that GM has moved to change programming of the OLM, think one would be on an engine change wish to go out beyond 3K-4K miles. Still the answer to your question would be interesting to all on these Lambda forums.
I've got a suggestion, why don't you just get a UOA from Blackstone on your next change and post up.
:cheers:
Regards,
Jim
In God We Trust!