Converting yeast bread from 6-cup to 8-cup pan?

[jenny_islander]

I am slowly perfecting my homemade bread recipe, which means making it as close to storebought as possible. :giggle My latest feedback is that it needs to be bigger, but still square. Obviously I'm not going to puff it up with dough extenders, etc. Can I just bake the bread for 4 6-cup loaf pans in 3 8-cup loaf pans instead? Do I need to change the baking time, temperature, ingredients?

[jenny_islander]

. . . Anybody?

The answer is probably obvious, but I've only been baking bread for about a year. I really need some help with this question.