While re-reading Ray Miller's early 70s "Thunderbird" book recently, I came across some notes re: engine rebuilding where he explains the practice (with oil galleries under pressure/no spark plugs). This brings up again the unresolved question (from recent head gasket sealer thread) about engine temp during break-in?



Since not everyone has access to this kind of equipment, the point might be moot. But, I have to wonder if this method has fallen out of favor over the years as it is never seems to be mentioned?

6 VOLTS/POS. GRD. NW INDIANA