Hello
So I like to learn things. And I was interested in the
"mushroom" head on the Y block lifter.. My search did not turn
up any other car manufacturer who used this..
But I did find a few articles on "big" diameter solid valves
Ask Anything , larger lifters. Hot Rod
https://www.hotrod.com/articles/ask-...arger-lifters/
I am sure some of you have asked this question, It seems strange
that only Ford would use this..but reading about the "larger" diameter
lifter, and how it moves "faster"..
The article gives credit to "chevy small block" and their 0.843 dia
then the 62 Ford 221, 0.875, then the then the 64 Mopar 0.904
Totally ignoring the Y Blocks 1.011 mushroom headed lifter..
Seems to me that with the head that big, but the body smaller
the Ford lifters are lighter, give more contact area, then either of
the other two... and came out in 1954.
Best