drill holes in t-stat?

Get a Milodon HF one at 160 degrees...drill two small 1/8" holes in it also to help purge air trapped in the block...if you have access to a thermal gun shoot the top and bottom of the radiator...if temps seem to be the same or way off have your radiator rodded out...I would also get a shroud and run a seven blade heavy duty thermal clutch fan...I just put in a mechanical water temp guage...first line is 160...a little past is 180 and two thirds is 205-210 degrees