Once everything was installed, not going to cover putting in the radiator, lol, it came time to put in coolant. Decided to do it like the factory does, vacuum down the cooling system and let it pull in the coolant. No air to burp if there is no air in the system.

This setup uses shop air and a vacuum venturi to evacuate all the air from the system. Pumped down in the picture. 60 cmhg is about 23.5 inches of mercury.

Got the kit off of Amazon, it was cheap, it did the job.I could spend more and if I had a shop I would of.

After at least 10 minutes of holding a vacuum this is where i was at. I do have one head bolt that is a tiny bit weepy. 50 cmhg is about 19.5 inches of mercury.

Some think that the factory put a spring in the lower hose to keep the water pump from sucking it shut, they did not. In the picture below you see why the factory put that spring in there. Maybe the time it takes to uncollapse that hose when vacuum filling the system matters to the factory, to me it did not. I am not rolling a new car off the assembly line every three minutes, lol.

If your lower radiator hose is collapsing at speed, you have a flow restriction somewhere, or a water pump spinning too fast.

Now for the numbers.

Electrical - on low speed the fan draws 16.5 amps. On high speed the fan draws 22.5 amp, numbers bounced around some so it's a middle number.

Once the engine hit 210 I jumpered out the switch and turned the low speed fan on. Once the low speed fan cooled as much as it could, probably after 10 minutes, I engaged the high speed to see how much farther down it would go.
Ambient was 101 degrees when I measure the numbers with my Ratek IR gun. 185 degree (rated at fully open) thermostat.

Low speed got the temps down to 167, high speed got it to 165 and that I believe is when the thermostat was fully shut.

I did capture airflow numbers. Mechanical was done at idle speed, which is when airflow is at it's least. No shroud in the stock setup, small diameter 4 bladed solid mount fan.

One final set of numbers, it got to 106 yesterday by the time I came in, today it got to 104. I lost 6 lbs, despite trying to stay hydrated. Only 50 more to go, lol.

I guess I should mention the Derale fan I am running is rated at 1800cfm on low speed and 2400 cfm on high speed. My readings are not cubic feet per minute, but rather feet per second. I figure since the readings are all with the same device and the same spec it ought to be a valid comparison of before and after.

Took the old Cambridge out on the highway today, only the second time I ever did that. The first time I did it, I got on the highway got it up to 65 and got right off the highway, too squirrelly for me. Since then I rebuilt the front end, new king pins, added some good gas charged shocks in the front, added Aerostar springs, one coil cut. Much less floaty in the city now. DIY alignment.

Took it out on the highway today with my son, got up to 70 mph at one point. She handles the highway well now. Slight drift right if I let go of the wheel. Not sure if it's alignment or road crown. I guess I'll spring for a set of turn plates and double check the alignment. My $1.25 store converted pizza plates ain't cutting it, lol.

Still to do, adding gas charged shocks to the rear. Maybe find a bigger sway bar for the front. Some where I read someone used a Jeep bar, but as is typical no details to speak of.