Leaking Coolant

I removed the intake today to see what I could see. First thing I found was that all bolts were only tightened to around 20#'s. The next thing I found was that the bolts had no sealant on them. I also found the holes reamed with a grinder on the intake. I have no idea why. These were 1966 273 heads going on a Performer intake. I remember the builder saying that the intake was not well made and out of flatness. I also found gasket sealer on each end and some was also into the water jackets and even under the gasket. I'll add pics if possible.