- Jun 4, 2016
- 13
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I have a 66 notch 289 auto with a new radiator, heater core, thermostat ,and all the hoses in between. the heater box itself is pretty fubar though. The problem is no heat, it blows cool air and I know the way 66 works is that its a constant flow and no valve like in the next body style. I forgot to mention the hoses get hot when routed either way. Hopefully someone answers this because the forum looks dead.