over heating 392

["David Zakarian" <arshog@xxxx>]

The next mystery. When running the hemi it overheats.
1) radiator has new core
2) with radiator cap off, water seems to be circulating(looking in the fill hole)
3) with cap on and run for a while(20 minutes), it overheats and when the cap is removed it spouts water out the fill hole like a stuck thermostat(no thermostat in the goose neck at this time so that can not be it).
4)when the petcock on the radiator is open and running water in the radiator engine cools down right away.

seem to me I'm down to the cap or fan clutch but I don't know if either would cause these symptoms, any other good suggestions?

Zak


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