I spent a good amount of time looking under the hood at the heater hoses and such. I finally figured out that I had not plumbed the hoses correctly, they were both coming out of the block or manifold. Switched one to the water pump and that helped. It still isn't what I would call hot, but it does blow warm air. I may take the shut off valved out of the lines and see if that helps with water circulation. I do also have a flex fan that is moving a lot of air, but no fan shroud, so I kinda figured it would be an even compensation. I will probably check for sure to see what thermostat is installed. My radiator is a new "desert cooler" but I thought for a 350 i had better give it every chance to stay cool.
