How to change the thermostat in a 1982 Corvette?

Assuming you have a carbureted 350(even if it is crossfire, same should apply). Remove the upper radiator hose that goes into the intake manifold. There should be two bolts holding the thermostat housing down. make sure the engine is cool and remove the two bolts. under the housing there will be a round metal diaphram lookin thing and thats the thermostat. you can just take it out with your hand and put the new one in. then put in the new gasket and hook it all back up.