Power brake upgrade question

[eddiericks]

Good afternoon,

I am still new here and this is my 2nd post.
I love the forum and find that like-minded people are best at answering questions and having experience with the same issues over and over.

So I have a 1977 c-10 4.1L 6cyl, 3 on the tree NC farm truck with 77,800 original miles.
This truck has manual brakes - front disc, rear drums, and the master cylinder is leaking.
I have purchased a power brake boosted master cylinder from Master Power Brakes in NC.
I have all the parts needed to perform a full brake restoration - drums, shoes, wheel cylinders, rotors, pads, soft lines, and hard lines.

Question is where to find a suitable manifold port to run the vacuum line from the booster?

I had a '76 model of the same truck that actually had factory power brakes. But that was back in 1986 that i owned that truck - high school.

I do see where the EFE uses a manifold vacuum port on the right rear of the intake. I wonder if I can use that and then route the EFE vacuum via a T fitting to another vacuum line off of the monojet carb? Not sure I need the EFE to work exactly as intended given the location of NC. BUT I do need the brakes to fully work as intended!

I have a photo of the EFE port (sort of hidden behind the air cleaner and a photo of the existing brake master cylinder.

Thank you for any advice you may provide.

Eddie

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[Ricko1966]

Converting from manual brakes to power,you need a power brake brake pedal or relocate the position of the pushrod on the pedal Power brake and Manual brake have a different pedal ratio. Give us more pics of the manifold,with the air cleaner off. Most of us have worked on 9000 V8 trucks to every 1 6 cylinder truck,so we need to see things,to help. I'd think there is a spot on the manifold for power brakes.

 

[ali_c20]

The brake booster should have it's own vacuum line, not shared with any other thing that needs vacuum.

 

[eddiericks]

Understood!
Thank you.
I’m thinking I can use the EFE vacuum port dedicated for the booster, and reroute the EFE vacuum to T into some secondary vacuum port. Perhaps off the carb.
I’ll post a few pics with the air cleaner removed later today. 5-6 pm EST.
Thanks!!
Ed

 

[eddiericks]

Ok. I was able to sneak home and get another photo with the air cleaner removed.
I think if I use the EFE port with a different fitting to run the brake booster, i can T in the EFE line to the EGR vacuum line off the carb.
See any issue with that set up?
I don't think a completely correct functioning EFE is necessary any longer if there is a smaller amount of vacuum.

Thank you!!

Ed

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[Ricko1966]

Look between the carbureator and valve cover.

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[eddiericks]

excellent advice.
Thanks for the pic.

Ed