gm original 14097088 square port heads ,need info on these heads

[MrBigBock]

any help would be appreciated ,found a set of these heads ,but was bare ,no valves ,need valve sizes ,thanks

 

[MrBigBock]

@MrBigBock, no body knows the original valve sizes of these heads ???

 

[63Half-ton461]

14097088...91-up...rect...OPEN...Gen.V 454/502 HO, 118cc chamber

Far as i know , no BBC rectangle port heads ever came with less than 2.19 / 1.88 inch valves.

Is that a crate motor you are working on ?