600 holley jet size

what is a good jet size to start with in a 600 vac secondary? i'm running a bone stock 350.

the last owner of the carb installed a 79 which to my recollection is fairly large. its been a while since i've ****ed with a holley..

right now it's running rich as hell..

 

try around a 64

 

I was thinking 68 was stock for a 600. Could be wrong though. Bill

 

I am using pri-72....sec-76 with a 6.5 power valves with a 350. 600 holley

 

My Holley catalog lists the stock primary jets of the common 600 cfm vac secondary R-1850-AAS Holley as 22BP-40-65. Is your power valve okay?