Raini,

I hate to see a post from you, you have the worst luck. My car has no fans at all. None, notta, zip. I have a 4 core autozone radiator, 180 stat, and run one line up on the guage. I can run 5-6 NOS passes in a row with no heating problems.
Are your heater lines flowing? I remember that there is a little restrictor somewhere in the system, that may have plugged up.
Do you have water in the oil? Does it run bad at all?
I will be installing a removable heater today. I'll let you know how it goes.
crazypete, get us some pics of the set up.
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88workcar
1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft
Rice Hater # 42
To be old and wise, You must first be young and stupid

I'm somewhere in tthe middle.