newer heads on oler pan

[doc308]

What mods would have to be made in order to bolt newer pan heads ( ie, with the o-ring manifold) to an earlier ,1950, engine? I know that some of the newer pan heads did not have an external oiling system. Would these just bolt onto the earlier motor without any modification?

Thanks.

[Guest]

Doc. Heres how it works. 56-62 rubber band style heads will fit any pan motor but 63-65 have the external oiler line and will not work. Bob

[doc308]

So, even the internal oil passages line up? It seems that I read somewhere that in converting some years to others, one hade to modify the oil system(?) Maybe it was converting to the external oil-line panheads(?)