Technical buick intake id

guys i'm trying to id this engine and all i have is pictures of intake with casting nmbers, need the buick gurus help! thanks. number on intake is B1375561F 3

 

google seems to think it might fit a 300 ci engine. That was used in the mid 60s in the Special and Skylark.

 

thanks Jim, I googled it and can't confirm that it's off a 66-67 300 buick and trying to get 100% confirmation to ID engine since this is all i have and engine isn't close.

 

I think the 300 was an iron block with aluminum heads. Can the owner check that for you?

The 215 was all aluminum, the bigger than 300 engines all iron.

 

Some 300s had aluminum heads, some did not.

 

64 300 ci had aluminum heads and aluminum intake on the 4bbl version, one year only. They were a hot little engine

 

this engine was in a boat.

 

i was able to get block casting numbers 1381622 which is 1966-1967.

 

Wouldn't that mean it was run wide open more often than not if it were a car engine?