'26 JD motor restoration

[rwm]

ok i see the wing shape got it.i just don't know what i need.i was told my cylinders needed taller valve pockets(ricardo style) i don't want to have the guy making them make the wrong ones.i saw tom's 2 cam race motor and it had the same cylinders 61 ci tappered fin.he measured the valve pocket for me witch i'm very thankful for but thet measure the same has my stock 74ci 27 jd anyway here is some photos trying to show the shape of the vane

[Tommo]

No they are just the straight bar type
The vane type only have a single upright that is shaped to swirl the incoming gases in either a clockwise or an anti-clockwise direction.
I am frantically trying to get someone to digitally photograph my ones so I can post pictures on here. All my photography is still done in 35mm and that takes time to develop which in this case we don't have.
Please bear with me.