Chris... like others mentioned there are a few unknown elements to your engine. One is timing the other is compression and lastly components. If the timing is slightly advanded, you can retard it just 2 degrees from where your at and see about a 10 degree cooler temp. Also a big difference is that you have (i believe) iron heads. They retain heat and do not dissipate the temp as fast as alum would. Those two items will result in a 15-20 degree difference. A properly tuned Alum headed lower (9.5:1) compression BBC should run around 185-195 all day long.
