[Stinky]

The modulator valve line is sitting with nowhere to go. I put a 750 Holley carb on my car. Did i miss something or am I missing something on the car??

[KULTULZ]

I assume you are working on a PONTIAC and went from a ROCHESTER to a HOLLEY? And there is no manifold port on the HOLLEY?

You will need to source manifold vacuum at the carb, spacer or intake manifold to have the modulator valve work correctly.

[troy-curt]

your post wasn`t very clear on details,where was it connected
before?

[Stinky]

Doh,
On the carb somewhere
I have several unused holes that I plugged on the Edebrock Performer intake. I dont know, but I would assume this pulls the same vac pressure. Would it be wise to throw a "nipple" type air fitting on and put the vac line from the modulator valve on that??

[Rubberman2003]

On my car there is a T shaped plastic piece to the left of the engine near the fire wall, mine goes into there and plugs into the tranny. 84 Z28...350 motor

[andybird]

Originally posted by Stinky
Doh,
On the carb somewhere
I have several unused holes that I plugged on the Edebrock Performer intake. I dont know, but I would assume this pulls the same vac pressure. Would it be wise to throw a "nipple" type air fitting on and put the vac line from the modulator valve on that??

I recently put a performer intake and edelbrock 600cfm on my chevy, same problem (used to be a rochester), I did exactly what you describe, I used the hole at the back left of the intake

[troy-curt]

It should go to one of the holes on the intake.On chevys it`s right in front of the dist. With power brakes there is a t fitting there; hth;

Troy