Can anyone tell me if this pair of heads is Oldsmobile and what year.

[sagefinds]

They are virtually identical except for the numbers in the upper left corner. They came out of the estate of an Olds nut and when compared with a pair of 56 heads I have they are very similar but with bigger ports. Appreciate any help.

[nzcarnerd]

Not sure on the years but the date code seem to be the days of the year - 108 and 209th days of the relevant year - Olds FAQ -- Heads (classicoldsmobile.com)

Maybe #8 is 1955 and #14 is 1957? - oldsmobile casting numbers | Hot Rod Forum (hotrodders.com)

[sagefinds]

They both have the 8 and the 14 with the same casting number under it in the same place. The only difference is the 108 and 209. I compared these with 56 heads and these are bigger and have to be from a bigger,later motor. Thanks for your input.