Putting A '77 Slant In A '64 Valiant?

The motor i had, all I did was spray some WD40 on them. let them sit a minute and use my air wrench and a socket to get them off. If you are unscrewing them by hand, you may have a bigger chance of stripping the bolt that holds them to the studs if you aren't right on the bolt. Then they can be a pain to get off.