Anyone have any easy ways to set the secondaries on a Holley 600 cfm carb?

Got it on my friends 302 and got it running properly tonite, sent him home, the secondaries just aren't opening up like they should be.

 

How do you know? The secondaries are vacuum controlled, and the only mod, or adjustment, you can make to it is to change the secondary spring. It sits inside that diaphram on the passenger side of the carb main body. You will have to buy a kit to do this, and the difference would not be huge, which is why I ask how you came to this conclusion.

Take care,
-Chris

 

The guy I was building the engine up for blew it up this morning going to work.

 

99% are. I remember seeing a mechanical secondary 4 bbl once or twice. Can't remember manufacturer, sorry. But I thought it was a cool carb. The throttle(cable-to-linkage) would knock open the plates emmediately. They don't make em like that anymore I guess. Less reliable probably.

 

my old chev had a quadrapuke on it was mech cam on the linkage controled WHAT A POS IT WAS ..........lol