My buddy has a four winns vista with a 5.8 ford/volvo engine in it,we went to winterize it today and he pulled the t stat housing off before i got there because he wanted to run it without a stat to get the antifreeze through the engine faster but he could not thr thermostat out and it looked like it was one piece with the cast housing?anyone seen this,i think an oring holds it in there but not sure.

The thermostat will come out. They are not a permanant fixture.

there will be an o-ring holding it in.

thought so,tanks guys

There may be a plastic insert with an aligning groove that will need to come out.

The plastic insert application is for chev/merc systems i think,my t stat housing has this,but nit on this ford.

be sure it is not a two peice housing the the stat sandwiched in between, seen them that way before..Rob