Chevelle running hot

[Bowtie-Bri]

Another thing to check out would be the clutch fan if it's been replaced before.
There is 3 different clutches available, standard, heavy duty and severe duty(trucks).
Cars with big blocks use the heavy duty ones. If it has the standard duty one, this can cause it to run hot. Some people have used the one for trucks, but it is alittle noisier than the heavy duty one. It's one more thing to check out.
Good luck!