Help identify valves please

[KiWinUS]

I have some mushroom stem valves that I do not know what they fit , maybe someone can help me here please ? They are all new & some are genuine ford valves .
head diameter 1.510 x 5.260 long
and
head diameter 1.650 x 5.255 long
Thanks
I have 15 of the 1.510 & 20 of the 1.650

 

[Ken/Alabama]

Might be for the 41-47 G Series 6 Cyl Engines. I know they are mushroomed on the ends and the exhaust and intake are different sizes.

 

[KiWinUS]

Thanks Ken .

 

[DICK SPADARO]

Tony, 1. 510 x 5.260 sounds like H exhaust series 6 cyl truck 8mth-6505-a
1.650 x 5.25 similar to G series 6cyl intake 5GA -6507 but those are .520 in green book