Blower manifold referance power valve modification

Posting this Holley modification that can be done yourself to run normal Holley carbs for Blower setups. I done this mod on a blower setup and it worked great. Saved me $$$$ not having to buy modified carbs.
This mod allows the use of the vacuum advance spark port to be used to bring in the power valve when using a blower.

 

Great tech tip, thanks!

 

made a copy thanks.

 

Thanks I was looking for this!
​

 

Just a bump in case anyone needs it