Thanks for the info. Really helps.Most, if not all, 3800's were 195 stock. Basically, any of those temp setting parts would run fine and act normal. Once you get below a 180 t-stat, it's potentially going to trip a code for not warming up (my drilled 160 sits right at that temp fine in my turbo engine, but the code is tuned out).
OEM part listing:
1991-2009 GM 195 Degrees Engine Coolant Thermostat with Gasket 24505924 | GM Parts CenterSave Big On This OEM GM 195 Degrees Engine Coolant Thermostat with Gasket, Part #24505924 for 1991-2009 GM. Wholesale Prices, Fast Shipping. Order Online Today!www.gmpartscenter.net