360 Tune Up

Well, the engine seems to run just fine. I can't really tell any difference yet. Hopefully, when I test for gas mileage, I will see a difference.

The temperature thing has got me bumfuzzled, however. It is completely opposite of any problem I've ever had in the past and I've had a few. It actually runs cooler idling that at road speed.

This car (41 Plymouth) has a Champion 3 row radiator in it and a Spal 16" electric fan. I don't have room for anything else. Today, as I drove it on the Interstate, I saw the exact same temperatures as I saw when it had no vacuum advance and much richer jetting. At sustained 70 mph, it would creep up to 200. I know that's within an acceptable range but it has a 180 thermostat (2nd one) and when the temp is 80 or less, it more or less stays at 180. The other weird thing is that it cools better and the temperature actually comes down when I get off the interstate and get on a secondary road (195). Even weirder, it cools on down to 185 idling with the AC running after I pull into the driveway. This engine has the 7" pulley on it and I really don't know which water pump.

I really expect ram air to keep it somewhere around 185. Got any ideas? I'm running out of them, as I've experimented with an undertray and air dam. This doesn't seem to make any difference, as far as I can tell. I will remove it and run it again this weekend.