Ok so this has been going on for a while and I have just dealt with it until now. There is a very slow coolant leak, and im talkin like maybe half a gallon every 2-3 months. I am sick of smelling burning coolant though and im sick of having to put it back in there. Its a very small piece on the lower intake manifold on the end. Its right by the crossover pipe. There are two small bolts that bolt it on. I took it off to replace the gasket when I rebuilt my motor. I couldn't figure out what it was so I just used some rtv and gasket material but evidently that didn't work. If anyone knows what this part is that would be great! Thanks.