Engine rattle and vacuum connection. 1965 Dodge Dart, 225 engine.

I found the adjustment values, 0.010 and 0.020, but it does not say if that is cold or hot engines. Then I also see that some use 0.012 and 0.022 instead, in case the valveseats are not hardened. Any thoughts ?

Bill

I carefully did my #1 to the factory recommended .010 and .020 hot. This on a fresh rebuild with resurfaced rocker faces.
Next day I checked them again cold. They were at .012 and. 022 so then I just set the other 5 to those gaps.
If your rocker faces are worn, that will affect the accuracy unless you use narrow feelers.