Hyd Roller vs Hyd Flat tappet on SM heads

Seems a 1.4” diameter retainer. Maybe 1.45” spring.
Might put beehive springs on…

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The rocker stands are still a little sloppy, seems like it would be perfect to throw a thin shim in old school style haha.


You can use a beehive spring but you don’t fix the problem.

That is 100% a geometry issue and nothing else.