Low Vacuum Issue/Big cam

Vacume advance is for part throttle,gas milage.if you just put around not likly with your set up leave that vacume advance hook up.Do you have a stall converter in there a 3000 stall would take the load off your motor alow it to idel better.You dont want it to idel at 1500 it will run rich.Good luck.I hope your cam works out thats the lift I plan for my 318 than 360 next winter.