Quote:

Both of my cars will idle at 200* all day long on a 100* day with the A/C on and a 195* thermostat with stock cooling systems. One thing that may have been overlooked is to be sure the fan clutch unit is a HD one for the 7 blade fan setup. I used to run the standard unit and had the same symtoms as described above and discovered the standard one will not spin the heavier 7 blade fan fast enough at idle or low speed. Not only is the 7 blade fan heaver but it has more resistance to turn as it moves more air.



I just checked and its a Hayden 2747 Heavy Duty Thermal. As far as driving on the highway...I can open her up going 75 and the temperature stays about 190º (given its a 180º thermostat)

I need to play with the air bleed screws a little bit and bring my vacuum up. In Drive its pulling 9". I used to have 12" but I swapped out to Dual Quads.

As far as checking the radiator if its plugged up, I would need to find a Radiator shop that actually has old school tools. Thats a needle in a haystack where I live. I replaced my coolant about 9 months ago because I swapped out to aluminum cylinder heads. I wanted to freshen up the cooling system. IIRC, the coolant was still Green, no rust color and I refilled it to 50/50 again. I have to pull one of my plugs and see how the color looks too...hopefully they aren't pitch black

Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s