FULL RESULTS-FACTORY LS HEAD SHOOTOUT, 6.0L WHO WINS? Check out this comparison between the 706, 799, LY6 and TFS 225 heads on a cammed 6.0L? What is the best head choice for a hot 6.0L? How do the factory cathedral-port heads compare to the factory rec-port heads? How do the 706 heads compare to the 799 heads on a cammed 6.0L? How much are CNC-ported heads worth. Bonus Test-Fast intake upgrade!