[mmcporter]

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Lots of good answers on the topic at hand. Thermostat, good system check, and timing check should all be on order. Timing plays a big factor, but if it starts/runs well, then you should be close. And, the range you describe is normal for these cars. Heck, that's actually a little cooler than where some of the newer cars run. One thing that is easily overlooked, though, is "pressure". Any idea what radiator cap is on it?

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<font color="blue"> Great tips Rob. Everyone has had something good to add, and if you add up all the responses, there is a great body of knowledge on supercar cooling systems here. As far as the radiator cap, it is a repop of the original GM cap from Ground Up Restorations. </font>