Join Date: Mar 2002
Location: Austin, TX, USA
Are you running an automatic transmission? Any chance the heat exchanger in the radiator has sprung a leak. If you are running an auto check the fluid and radiator for strawberry milkshake foam. If it's just a small amount, could it be oil that found its way into the cooling jacket during assembly? Oil floats on water so the radiator and overflow would eventually skim out any oil that found it's way in no matter how small amount it was.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI