Dear Mr. Rausch;
Simply blow air through the oil pasageway from the top of the block downward, making sure It's clear.
We ballanced the 216/235 engines down to 1/2 a gram in the 50s. Today they go even closer. I can't emagine anything out of ballance by ounces (28.3495g) +/- etc.
So; assuming that info is correct, go ahead & ballance like you said if you plan to keep the vehicle/engine.
I had an II. member tell me his rods were within 4 grams a few years back, so you have to be really carefull on advice here (internet)sometimes.
It's NOT the weight of the parts, but the speed at which they will be moving that's important. So on a 'stock' (3,500 RPM) engine, 4g rods would be okay.
Good luck.
