I have lots of LS heads. They have all been rebuilt with all new intake valves, guides checked or replaced, new seals, 3 angle valve job, springs checked, stem height set, and surfaced. They are complete and ready to bolt on. Will sell pairs of 317's, 706's or 862's for $550 a set. Will sell 243's or 799's for $650 a set. If you have good, rebuildable cores to turn in, I will knock off $150 for 317's, only if you buy the 317's. Will knock off $150 for 862's, or 706's. I will no longer accept CastTech 706 cores unless you let me pressure test them first. I will knock off $250 for 243's or 823's. If you need bigger springs, I will swap them for no charge, if you provide the springs you want to use. Call 801-244-1599