Radiator choices 26" or 22"
I cant argue against increasing the antifreeze capacity being anything but a good thing.
Well, the cooling system is just that, a
system. The radiator is only one part. If you can cool the system properly with your combination of water pump, fan, and 22" radiator, then the extra capacity (which isn't much anyway) isn't necessarily going to improve anything for you. But it's definitely easier to have a system with a little extra radiator than a not enough.
I like the 26" because I like the contour fan set up. It's an OE system designed to work for 100,000+ miles, and it moves a TON of air. ~3000 cfm on the low speed and ~5000 cfm on the high speed. Being a race car, electric fans have some advantages, so if you're going that route that's a good fan set up. Not that there aren't good electric fans for 22" radiators, there are. I just have a system I like.
Interesting my car is 340 no air car
They could also be ordered as an option. With a 340 car getting a 26" radiator wouldn't be unheard of. They were just included as part of the package with the later V8 AC cars.