I have an aluminum longblock 5.3 "LS" from a trailblazer. With 862 heads.
Unsure on mileage, but appears to be in good usable condition from my inspection. Perfect for a sloppy turbo build. It's oily, and could use a reseal.
For any serious buyers, I can pop off the oil pan for your inspection. I could also have it leakdown tested at your request.
I also have a TBSS intake I'd throw in with the sale of this engine.
Located in American Fork UT. No delivery
This is NOT an Ls1