Thermostat for an 88

[BSav]

Have to replace the trermostat in my 88 Jimmy. I went to the local parts place and they had three diffrent temps 175, 185, and 195.
My truck has a 350 v8 700R4 tranny and a towing package. It is stock and I run mostly the highway with it. Which should I choose and why? Are their any markings on the truck that say wich one to put in?
Thanks for the help.
Brian Sav

 

[Z3PR]

Stock should be the 195. Stay stock because it's computer controled. Now on my 76 K5 with no computer, I'd run a 165.

 

[BSav]

Thanks for the help, thats what I picked up.
Brian Sav