no heat using a clutchless flex fan

[steveos80c10]

hey guys

i did a swap and have a small block now where my straight six used to be. i went with a clutch-less fan/flex fan set up and i now have no heat. i did this in the summer so i had no idea until now.

when im driving i have nothing but when i slam in the breaks and come to a stop for about 30 seconds ill have heat. i swapped my motor out bc i overheated the inline six and had anti freeze coming out of my exhaust. lol gee say crack head anyone?

could that have done damage or is my new fan set up screwing me? i called the company and they have no clue. and not to mention since the swap my fan sites about 8 inchs away from the rad lol with the clutch fan or flex lol so i have no idea guys. any input lol?

btw put a new thermostat in when i did the swap.
and i sometimes but not often, almost get to 3 quarters on the temp gauge but she drops down to half or a little less and stays around there.
and wit the clutch fan it would overheat if i left it running, hence why i tried a cluchless fan.

could it be cooling my motor off to quick lol? why would i get heat for seconds but temp guage stay the same, or why would i almost get to 3 quaters but feel no heat lol? idk.....

[mgchevyparts]

You have something wrong in your water flow to your heater core.

[INSIDIOUS '86]

Check the water level? I got a flex fan. Still get heat for mine.

[79Betty]

Sounds like air bubbles in the system...

[85chevy383]

vacuum issue to the ac/heat controls not holding the damper where it should be?

[Desert1957]

Let's see pics of how you hooked up your heater hoses after the engine swap.

6 to 8 you may have something causing a "no flow" situation.

Easiest way to check flow is to feel the heater hose, warm up engine , blower fan to high, one heater hose should be a little cooler then the other.

Both cold, no flow.

Desert

[Desert1957]

Is this what you started with?


How did you hook up the hoses after the engine swap?

Desert