Fan size vs shroud size

[John]

I am in the process of fixing the high temp issue. I've taken some steps but still have a few others left. Step one was to replace the thermostat with a Autozone 160 with a bleed hole drilled in it. That alone has made a big difference. Next step was to get the Hayden 2747 and larger 7 blade fan if possible, and check timing. If I can't get a larger fan, I think the changes made will make a huge improvement with my stock 4 core.