CharlieDon't know yet if it will turn over or not. Couldn't get down into the crank bolt to try. The front clip is supposed to be off this week, so I should be able to tell then. With 100+ weather, I haven't been really anxious to go tackle getting it out of the truck. At least one head (couldn't get where I could read the other) is ECZ-G in small letters. Is there a major difference between the large/small letter heads? I may try early Saturday morning to get a better look. Wish I could get the pan off to check the mains for ecz castings, but that won't happen til the engine is out of the truck.