I have this 5.3 block i was going to use but have since changed my mind. its out of a 2001 suburban with about 100k on it. It did NOT knock or tick at all. but the motor is filled with sludge. lack of proper maintenance is my guess. No heads or intake. The entire bottom end intact including flywheel. Cyl walls look good. Prefer if some one would come and get it as i don't have any way of getting this thing out of here. $100 obo