I heard a loud ticking coming from the engine bay as soon as I got past 65 mph. (It sounded more from the block than the valve covers) So I shut the truck and let it cool down, check the oil, and the anti-freeze since the thing drinks it. I tried to start it again and as soon as I did smoke started rolling from the engine bay and then it died. The oil was full and wasn't distorted in color at all so I don't think there's any type of blown gasket, or manifold leak. Any ideas to what it might be?