Yeah, I know that cars like 40 Fords can have an issue with that...........what is it called, air reversion, or something similar. The air can't escape so new air goes around the radiator instead of through it.

Last night Don and I were working on his car and he said he just saw where some guys on a TV show were talking about how they punched holes in their fan shrouds to allow air to pass through when going down the road. Supposedly it cured a run warm condition that they had previously experienced. I guess that could be true also because one radiator setup I bought had rubber flaps over some holes in the shroud to allow air to escape while driving, but they would suck shut when the fan came on.

We are going to pull out Dons shroud and holesaw some holes into each corner to see if his T will run cooler going down the road.

Don