I see the previous owner of my ’69 with a 351 W has bypassed the Vacuum Advance Temperature Controlled Switch. The car is totally stock with the 2 bbl carb and fmx trans. The vacuum port on the distributor canister is hooked directly to the vacuum port on the carb. What are the advantages/disadvantage of bypassing this valve? My guess is it was bypassed because the plastic ports have become brittle and snapped off. Car runs fine but there is a slight hesitation and at speed it does seem to bog down until I slightly let off of the accelerator, could this be related? Also, I’m getting ready to swap in an Edelbrock performer intake and 600-ish cfm carb. Should I use the vacuum advance temp switch or keep it the way it is now?
Thanks in advance!