429 in a '62 coupe deville?

My 390 is tired in my 62. I have acccess to a 429 from 66... is this a direct swap? Right now my 62 has OG engine and trans. Any info or resources would be great. Thanks!!

 

There were some changes made to the 390 block in 63. Because of that, I don't think it's a direct swap because the 429 is slightly narrower than the pre 63 390. You might want to check engine mount locations and mounting width.
Another thing, the 429 was mated with a TH400 and might have a different bell housing pattern.

 

Have you asked over on http://www.modifiedcadillac.org/ They might know.