To me it seems like it is taking longer for my secondaries to open.Is there a way to adjust them or do i have a issue?I am running a R/B Holley 465 carb and intake.

 

I believe the vacuum secondaries cannot be tested without a load. Free revving and driving would
net different results. Does the car feel sluggish?

 

the only adjustment u have is changing the springs out for lighter ones. or do like i have and put a screw in it.

 

yeah they sell different springs that adjust when and how fast the secondaries open. although you wanna be sure that that is the reason your car is feeling sluggish

 

you can cut the spring inside the diaphragm box shorter by about 1/3

failing that convert to mech secondaries

 

Yes car seems sluggish.I changed fuel filter couple weeks ago and felt better.I have 2 1/2 straight to a fart can,then Thursday i put another muffler on it cause it was to loud and getting on my nerves.This started before though.

 

I use a quick fuel diaphram so the secondaries are adjustable externally

 

i would check the cap rotor and wires, carb problems are usually something else...