unknown vacuum connection? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Steve-W · 06-09-2011, 05:10 PM

I'm in the process or converting my C10 from drum to disks in the front.
I just ordered a new master brake cilinder with brake booster..but I am puzzeled where to connect the vacuum hose.

I see a connection on my intake manifold, but it's connected to a metal hose/line and goes in the direction of the transmition.. what is that connection for??

**70C10Toejam** · 06-09-2011, 10:41 PM

The vacuum line goes to the tranny, part of the kickdown for a TH350 IIRC. If you can't find an actual "T" for the booster option, just go the your hardware store and get a brass "T" fitting and then hose barb fittings for that one and the booster. If it wasn't dark out, I would take a pic of mine.

Steve-W · 06-10-2011, 10:28 AM

Quote:

Originally Posted by 70C10Toejam

The vacuum line goes to the tranny, part of the kickdown for a TH350 IIRC. If you can't find an actual "T" for the booster option, just go the your hardware store and get a brass "T" fitting and then hose barb fittings for that one and the booster.

Great!, thanks for the help.. I really need to update my automatic tranny knowledge

**john** · 06-10-2011, 01:51 PM

You need a fitting like pictured in link. Wrecking yard or parts store possibly.
https://www.paragoncorvette.com/p-35...m-fitting.aspx

Psycho71 · 06-11-2011, 11:23 PM

You could also run that trans vacuum line to a manifold vacuum port on your carb, the use the intake port for the brakes. Or, and I'm not that familiar with the carb you have, but most carbs have a 3/8" manifod vacuum port on them, so you could route the PB line to it. There's a few different ways to skin that cat.

Steve-W · 06-12-2011, 07:07 AM

Quote:

Originally Posted by Psycho71

. There's a few different ways to skin that cat.

LOL!

ok so i have options, either a T connection, or a seperate connection.
thanks for the help guys.

as soon as I have it fixed, i´ll post it in my project topic.

06-09-2011, 05:10 PM	#1
Steve-W Registered User Join Date: Aug 2010 Location: Hoofddorp, the Netherlands Posts: 582	unknown vacuum connection? I'm in the process or converting my C10 from drum to disks in the front. I just ordered a new master brake cilinder with brake booster..but I am puzzeled where to connect the vacuum hose. I see a connection on my intake manifold, but it's connected to a metal hose/line and goes in the direction of the transmition.. what is that connection for?? __________________ Feedback is always welcome! projects: 1969 Chevy C10 1950 GMC 100 1958 Chevy C60 Viking ratrod

06-09-2011, 10:41 PM	#2
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: unknown vacuum connection? The vacuum line goes to the tranny, part of the kickdown for a TH350 IIRC. If you can't find an actual "T" for the booster option, just go the your hardware store and get a brass "T" fitting and then hose barb fittings for that one and the booster. If it wasn't dark out, I would take a pic of mine. __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys

06-10-2011, 01:51 PM	#4
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: unknown vacuum connection? You need a fitting like pictured in link. Wrecking yard or parts store possibly. https://www.paragoncorvette.com/p-35...m-fitting.aspx __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

06-11-2011, 11:23 PM	#5
Psycho71 Registered User Join Date: Jan 2006 Location: Kaufman, Tx Posts: 827	Re: unknown vacuum connection? You could also run that trans vacuum line to a manifold vacuum port on your carb, the use the intake port for the brakes. Or, and I'm not that familiar with the carb you have, but most carbs have a 3/8" manifod vacuum port on them, so you could route the PB line to it. There's a few different ways to skin that cat. __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels!

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