Vacuum diagram for my truck? Would you be able to "decode" it for me?

Is it coming from the vacuum modulator on the transmission? If it has a steel line, chances are that is what it is. Look at the transmission and locate the module. See if it attaches to the steel line. If I recall, it will be mounted near where the transmission dipstick tube is mounted. If that, is it, it simply gets engine vacuum.

If the vehicle has a carb (I don't think it does, but don't recall asking), it will mount to the bottom of the carb at a vacuum port.

Let me know. See pic below.

Joe

Hi,

I said that backward. The base of the carburetor is ported vacuum. You need a manifold vacuum. There should be a nipple behind the carburetor on the intake that it goes through.

Take care,
Joe

If it is on the manifold, yes. It's been some time, but I remember the vacuum being attached to the intake manifold behind the carburetor.

Okay, try using one from the base of the carb. It shouldn't make a difference. The worst case is a slower response from the modulator. However, I can't imagine it would even be noticeable.

That's a whole lot of engine! LOL

Hopefully, when you get it running, you can videotape it and upload it for me to hear.

Take care,

Joe

Hi,

Yes, the distributor should be ported. The transmission responds to a drop in vacuum, so you want a manifold vacuum.

Looks great. Let me know how things turn out for you.

Take care,

Joe

Hi,

It appears you circled the choke pull-off. That will be a manifold vacuum.

Joe