Well that makes sense. Overheated the engine previously to where it started to knock and it warped the head. Thanks Rusty! Do you have a recommendation where to get quality pistons?
Not really. Any of them will do. They are all the same piston for the 170, 198 and 225 so if it says slant six pistons it's probably right. lol I am going to use the long 198 rods in mine so I am going to run the 2.2 Chrysler 4 cylinder non turbo pistons.
Also, I would strongly recommend you mill that head at least a total of .100". That way it will actually help compression some and add a little power.