" From: Keith Evenson <epd@xxxxxxxxxxxx> " " I posted awhile back about my 70 Jav with a '73 360 I am having " trouble with the overflow tank overflowing. I can drive all day just " fine if I don't get on it or pass anyone or more or less baby it. But " if I take it out and do a hard start or tromp on it it will overflow " right away. I put different heads on it a year ago and it ran fine " most I the summer then one day it started doing it. The heads I put on " it are the "319" heads so I don't know If there are any issues with " the heads not matching up with the newer block or what. If that was " the case it should have done it from the start not after I drove it " for the summer. Any ideas would be great. Thanks my guess is you're not getting full cooling from your radiator; it's starting to plug up. why it started suddenly is more of a puzzle - perhaps something dislodged from inside the heads and stuck in the radiator? another thought - maybe the impeller on your water pump has come loose from the shaft and is not pumping effectively. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com