Going to put BBO valves in my 7a heads for the stroker build CutlassEFI is building for me. Given the total lack of Olds experience on this side of the pond, I'm looking for pictures of SBO heads with valves of those sizes, so I can give my machinist something substantial to work towards - and so I know how to port the heads ahead of the larger valve size being put in. If anyone has anything of that sort, it'd be a big help. Thanks.

PS: Furthermore, when I give my machinist the valves and the heads, I want him to make sure the valve stems are set at an even height across the board, yes?

 

Alright, let's make this easier for you guys.

I've removed the red circled elements so far:




Do I also want to remove this ridge?



Do I need to do anything further to ready the heads for a valve job that gives me bigger valves?

 

I would grind the area around the guides too. I believe transitioning the bowl to the bigger valves is also important.

 

Sounds fair. Should I just kinda "flare out" the last quarter inch before the valve seat to the new diameter`, or is that too much?