I had a ls 6.0 rebuilt. The first time when I got it back I noticed that the engine had very high oil pressure like 125 lbs at 4000 rpms I called Chad he said its normal with the type of oil pump I have. Less than 100 miles I had 3 lifters stop working and they messed up my brand new cam . I called talked to Chad about it first thing he said that I had bad lifters without looking at the engine what so ever he claims their workmanship had nothing to do with the engines failure. Then after a little back and forth between Chad and I he said he would fix for 500 so I took him the engine when I picked it up he charged me 1000 and said they had to do some extra work on the engine . Now I got the engine back in vehicle and around 150 miles later it burning oil and the oil pressure is still really high I feel like I'm out of a bunch of money with a broke engine do yourself a favor don't do business here or you too may find that they don't stand behind their work read more