To make a long story short. I just took an 87 2x4 cab, and put it on my 83 frame and running gear. The 83 that I had was stolen from me. But I got it back. All seemed fine except for the body. That was toatled. But the engine and running gear was O.K. I've only had it running for about 3 days now and haven't drove it too far. 10 miles is probabally the farthest. The engine seems to be running ok. At least for one that's a stolen recovery. But, I get some major pressure building up in the radaitor. I pulled the T-stat out and no change. Thought it might've been a head gasket. So, I ran a compression check. And according to that I'm fine. 155-165 with none bleeding off for 5 minutes. The truck smokes like I'm from some old Bond movie. Also, I seem to be burning a lot of oil. And I mean A LOT. I'd say about 2 quarts worth in almost 25 miles. Don't think it's a leak cause it's been sitting on a garage floor with no puddle under it. But to make sure, I cleaned off the engine today to see if it leaks anywhere. Was draining the radiator to pull the T-stat today, and the (new) fluid had what seemed to be all my missing oil in it. Could my head be toast???