Hello everyone. I have a Chevrolet Silverado 1500 with the 5.3L V8 that apparently (opinion of my mechanic anyway) has a cracked head. It has gotten pretty bad and now will overheat when idling, and actually put enough pressure into the cooling system to crack the radiator. First question - will the Cracked Head issue cause this? The truck has 185,000 miles (original engine) so I am considering changing out the entire engine. However, it really doesn't make much sense to do this unless I can get a replacement engine pretty cheap. The pros are the entire engine will be "new to me" but there is a lot of labor involved and I don't have a good place to do an engine swap. My house has a garage but it isn't big enough. I haven't done this type of thing by myself before but I think I can get some experienced help (inlaws). I am also considering just putting new heads on it. The pros to this are that I could get new heads probably cheaper than an engine, and ensure that they are the latest generation head. The cons are the labor involved and the fact that the new heads will be going on a bottom end with 185K miles. Some water has gotten in my oil but I don't think it has been very bad. Here are my questions: Has anyone had experience with either of these options, and how did it go? A "junkyard" engine would probably cost about what new heads would cost but you don't know what you are getting. Plus, I will probably wind up with the Gen 1 head (that was known to crack). If I get a rebuild (say a Jasper) then I will be into this for more than half the value of the truck and may as well pay a little more and have it done professionally. I have also heard that new heads on an old bottom end are not a good combination. How do you get the old engine out? The concerns I have are A) grabbing the engine to pull it and B) the air conditioner. The AC Compressor is on the bottom but the condensor (or whatever the tank thing is called) is on top. Thanks in advance. - - - Updated - - - Just to add - the truck is in very good shape. Never wrecked, no body damage other than a few dings and dents. The fuel gauge is a little iffy but other than that it runs well. Trans and rear diff seem to have no issues.