[British-cars] Transporting an engine

[Charlie & Ressie O'Connors]

I need to carry my Austin Healey's (rebuilt) engine about 450 miles.  I
have a small utility trailer that I can use to carry it, but I don't
know if it should be shipped upright, or can I lay it on its side while
carrying it on the trailer.  I would feel safer traveling with it on its
side, but I don't want to cause any damage traveling that way.  Any
thoughts would be appreciated.  
 
Charlie O'Connors