Used heads from 2001 5.3L LM7 motor. I THINK the heads had around 70K miles when the lower end went south. I bought the motor on ebay and am installing some LS1 heads so these are available to anyone who needs a core or rebuild set. The heads include the valves, springs, retainers, and keepers. They will raise compression on any LS1 motor due to the 61cc chamber size. More info is available on head specs in the "Internal Engine" section of this site. They appear to be in good condition but are sold as-is since I do not have any history on them.
I would like $150 plus shipping ( from area code 87114, NM ) but make me an offer if interested.
Thanks for looking!