IMO the best thing to do in your situation is increase coolant flow when you need it the most. This can be achieved through a Meziere water pump. I run my Whipple car in the Las Vegas heat all summer in shitty traffic. My needle, granted it's not a coolant but cyl head temp, never reaches the middle of the gauge where it used to sit stock. I can sit in 120+ degree ambient temp, with the AC on full blast, and it won't budge. I've even seen the gauge go down, sitting idling in the staging lanes at the track.
Think about it, when do you need the most flow from your coolant? When you are sitting still and there is no air flow. So with a mechanical pump, it is flowing it's lowest volume when you need it the most. A Meziere will flow at max capacity all of the time, 24/7. Too many advantages, and no disadvantages to running an electric pump. I've run them on just about every race car I've owned in the last 30+ years.
Advantages:
*Max flow 24/7
*Less parasitic loss from the belt
*You can drive it home without overheating if you lose the belt (depending on how long your battery lasts running the ignition).
Disadvantages:
*None that I can think of.
Think about it, when do you need the most flow from your coolant? When you are sitting still and there is no air flow. So with a mechanical pump, it is flowing it's lowest volume when you need it the most. A Meziere will flow at max capacity all of the time, 24/7. Too many advantages, and no disadvantages to running an electric pump. I've run them on just about every race car I've owned in the last 30+ years.
Advantages:
*Max flow 24/7
*Less parasitic loss from the belt
*You can drive it home without overheating if you lose the belt (depending on how long your battery lasts running the ignition).
Disadvantages:
*None that I can think of.