1955 Cadillac Head Issue-Can other years be used?

I am trying to find out if a 1955 cadillac 331 engine can use any of the later heads. The 55 heads were a one year only application, but I'm wondering if the heads from a 365 or 390 could be utilized. If anyone can provide some technical knowledge and advice on this issue, it would be greatly appreciated. Thanks.

 

been some good threads on this and the answer was yes. do a search Marcus had an early thread.
I have a 58 tripower on my 55 heads with very minor mods

 

what mods had to be done? thought they were all the same

 

Any additional comments on this issue with some details would be appreciated. Thanks

 

365 and 390 heads will work. Early 331 heads will also work but they are lower compresion.

 

Just went through this myself. If you use the later heads, you should also change to the later lifters, pushrods, and rocker shafts. Otherwise, you may end up with the valves held open. The late 57 and newer 365 has a pushrod that is almost 1/4 inch longer than the 331.