hot is still an arbitrary value in this case. H on the gauge corresponds to ? If you blew the cap (assuming a 7psi cap) you were at 235F with a good mixture of coolant, if you didnt blow the cap, you were under 230, which is fine, shouldnt have done much damage.

Check the HEI module along with the cap/rotor and plugs. Then move to the carb.

The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me