I tend to agree
Not knowing its history thought maybe a mouse nest was in block
Flushed block radiator heater core
Block flowed decently
Rad flowed decently but it sure looks crusty on cores
80 psi pressure check on each cylinder
No air into coolant so thinking head and gasket ok
Installed 4 lb cap it went longer before it boiled with 160 thermostat
Had bled air out of system by pulling heater hose at location under thermostat
Temp read lower about 160 than with old thermostat
Should have done earlier but checked heat where temp gauge goes into block over 200F when it boiled
Sooo thinking water pump or radiator
I’ll start with pump since it’s cheaper unless someone wiser thinks differently
