Henry & Tigers,
I have seen and used the Mr. Gasket design successfully in my Holley
1848-1 four barrel. This design is the same type that Holley has
incorporated into it's newer carburetors.
The "Power Valve Shield" appears simpler to install, although I have no
idea how it is supposed to work (not having seen one).
It would appear logical to assume that Holley would have picked this
simpler approach if it were more effective, but that is just an assumption.
>Please check out this apparently easier to install power valve protector for
>the unprotected Holley carb. I have not nor do I know of any one who has
>tried this product. If someone has, please chime in with your feedback!