LSX Cathedral port valve job info

[Felix C]

Does a LSX cathedral port head, 243 casting in this instance, have a specific cut angle? different than modular ford, sbc, etc.
I do not know if shops in my area are familiar with the LSX cathedral port head and wish to ensure they know what to do. I am in Miami and some places promise the world. Best to be prepared.

[Felix C]

Well I found factory specis is 30/45/60 degree blend into chamber

[202ci EH]

They like a steep angle below the 45* seat I’ve found. Say a 63-65* cut. Seems to make the ssr act taller. I use 38/45/64/75 on mine

[KnightEngines]

Similar, I use 35/45/65/80

[202ci EH]

Similar, I use 35/45/65/80

Now I think about it mine might actually be a 82*, most of it disappears after blending anyways,