Vacuum modulator line - 1966

[Harley Eaton]

There seems to be some question where the vacuum modulator line should be connected on the 1966 T-Bird engine end. Some say at the brake booster vacuum fitting. Others say the carburetor spacer. Others may say the intake manifold. Where do some of you say it "should" be connected? Also, what do you have connected to the carburetor spacer?

[66tbird]

My 66 Has All The Vacuum Lines In Place I'm Not Sure Which One You Mean By The Modulator Line. I'll Check Carb Spacer And Let You Know

[boaterbob]

My 66 has the Modulator line connected to the carb spacer. Vacuum advance to the carb and booster to the manifold.

[Joe Vandatta]

On my 66 the lines are as follows.
Tranny to carb spacer connection
Distributer vacuum advance to base of carb (operated by throttle plate opening)
All other connections (brake booster, vacuum reserve to intake manifold)
I also have the closed crankcase ventilation system which connectes to the intake manifold.

[AllFlairedOut]

My set up is the same as Joe's

Originally Posted by Joe Vandatta

On my 66 the lines are as follows.
Tranny to carb spacer connection
Distributer vacuum advance to base of carb (operated by throttle plate opening)
All other connections (brake booster, vacuum reserve to intake manifold)
I also have the closed crankcase ventilation system which connectes to the intake manifold.