I recently purchased a rebuilt LS1 short block and assembled the engine using new gaskets and seals and proper torque specs. Upon running the engine for just a few miles I checked all fluids and found oil foam in the cooling system. I checked the oil pan and there was no water in the oil pan. I assume there is a leak somewhere in the pressurized oil system. Can anyone shed some light on how the water is getting into the coolant? Thanks!! membill