5.3 Engine Installed on my Sierra 2013. One broken spring only, the rest are intact. Needs valve seals. Repair cost is no more than 2500﷼ including parts and labor. Reason for selling: I'm installing a bigger engine. Everything in it is intact except what I mentioned. The engine has DOD deleted. LS7 lifters. Has stock 6.2 cam. The engine is very active and has no issues, God is my witness to what I say. Contact number: ( Phone number appears when clicking the contact button )