I have a 1968 427/390 that overheats. So far I have
replaced the termostat
run it without a termostat
made sure the water pump is working
replaced the radiator cap
made sure it was completely full of coolant
tried Wetter Water
replaced the radiator (the car sat for 32 years so I thought it could plugged)
removed the fan and clutch and replaced it with a flex fan and spacer
Some of these things have helped but it still overheats when it's above 80 degrees and it's driven below 40. It cools down some on the highway but eventually gets to hot. The car has had a body off restore and most of the parts are original. I'm trying to keep it that way. I'm not happy with the new radiator and fan. I'm out of ideas except for another heavy duty radiator with front mounted blower fans. Any other ideas?
replaced the termostat
run it without a termostat
made sure the water pump is working
replaced the radiator cap
made sure it was completely full of coolant
tried Wetter Water
replaced the radiator (the car sat for 32 years so I thought it could plugged)
removed the fan and clutch and replaced it with a flex fan and spacer
Some of these things have helped but it still overheats when it's above 80 degrees and it's driven below 40. It cools down some on the highway but eventually gets to hot. The car has had a body off restore and most of the parts are original. I'm trying to keep it that way. I'm not happy with the new radiator and fan. I'm out of ideas except for another heavy duty radiator with front mounted blower fans. Any other ideas?
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