Quick Tuning Upgrade Holley Vacuum Secondary

abdywgn said
Yes, thanks for sharing! Better than buying another carb to get that feature.
What spring are you using or do they recommend?

You'll tune/adjust it with the screw. You'll have no need to take it apart and even look at the spring

sireland67 said
That is cool, the one thing I like is the street advengers already have the plastic quick vacuum spring addition.
Now I got more crap to buy.

Mine came with the plastic top "quick change" also. The Quick Fuel is faster and more precise. You can turn it in the slightest increments if you want to....