Vacuum Source for Brake Booster - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Moose67 · 11-07-2008, 02:17 AM

I am installing a power brake booster on my son's 67 2wd Chevy. It has the 250 6 cylinder, where is a good source of vacuum? When I got the truck the PO said it was a reman engine so I don't know the year. Thanks for your help.

hdflstf · 11-07-2008, 02:19 AM

Intake manifold port that is right about dead center of your picture.

Luvlegs · 11-07-2008, 10:26 AM

yep - what hdflstf said - in your pic, it's right above the silver colored exhaust collar - yours even appears to already have the hose barn installed in it.

71 super · 11-07-2008, 11:00 AM

you will have to have a different breather, the one you have will not work w/power brakes. i saw one on e bay yesterday, they have an off set that that moves the breather to the other side of the engine.

68gmsee · 11-07-2008, 11:09 AM

Hey Moose, what year booster are you using? And are you also installing the propertioning valve with it?

fyi: I installed pb on my all drum 68 many years ago (don't remember where I got it) but it made the brakes grabby. In other words, in a quick stop, the back brakes would lock up and scare the h-- out of everyone near me.

It may be because I didn't install a proportioning valve with it, but for now I'm back to manual brakes until I get the right parts.

Moose67 · 11-07-2008, 01:17 PM

Sorry I left out some info. I have an ECE disc conversion and ordered the booster from them. It has the prop valve and the booster pictured below. I saw the offset breather in the FS section, but it will have a 350 in there before next summer. I am thinking about going with the open element air cleaner available from Summit or Jegs

luvlegs-- Hose barn? Which part is that?

65ShortStep · 11-07-2008, 01:25 PM

Quote:

Originally Posted by Moose67

luvlegs-- Hose barn? Which part is that?

I think it's this part.

Moose67 · 11-07-2008, 01:29 PM

I pulled that off and its a blind hole. Can I just drill it out or what?

LuckyHenriksen · 11-07-2008, 05:43 PM

I think he meant barb

factorystock · 11-07-2008, 08:53 PM

No, it is not that circled piece.That is just a stud the accelerator linkage swivel attaches to on car applications.There is another threaded port just about 2 inches away to the left. It would be directly behind that black round thing in photo.

11-07-2008, 02:17 AM	#1
Moose67 Registered User Join Date: Sep 2008 Location: Borger, Texas Posts: 66	Vacuum Source for Brake Booster I am installing a power brake booster on my son's 67 2wd Chevy. It has the 250 6 cylinder, where is a good source of vacuum? When I got the truck the PO said it was a reman engine so I don't know the year. Thanks for your help. Attached Images

11-07-2008, 02:19 AM	#2
hdflstf Registered User Join Date: Oct 2007 Location: Desert Southwest Posts: 540	Re: Vacuum Source for Brake Booster Intake manifold port that is right about dead center of your picture.

11-07-2008, 10:26 AM	#3
Luvlegs Registered User Join Date: Sep 2005 Location: Smith Mountain Lake Virginia Posts: 1,537	Re: Vacuum Source for Brake Booster yep - what hdflstf said - in your pic, it's right above the silver colored exhaust collar - yours even appears to already have the hose barn installed in it. __________________ "A cat will almost always blink when hit between the eyes with a ball peen hammer" (you don't always have to state the obvious) Wear your PPE! You can eat with false teeth but you can't see with a false eye. 1959 Studebaker Silverhawk 350/400 1972 C10 L6 3OTT 2005 F350 - Built - whew!

11-07-2008, 11:00 AM	#4
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: Vacuum Source for Brake Booster you will have to have a different breather, the one you have will not work w/power brakes. i saw one on e bay yesterday, they have an off set that that moves the breather to the other side of the engine. __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

11-07-2008, 11:09 AM	#5
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Vacuum Source for Brake Booster Hey Moose, what year booster are you using? And are you also installing the propertioning valve with it? fyi: I installed pb on my all drum 68 many years ago (don't remember where I got it) but it made the brakes grabby. In other words, in a quick stop, the back brakes would lock up and scare the h-- out of everyone near me. It may be because I didn't install a proportioning valve with it, but for now I'm back to manual brakes until I get the right parts.

11-07-2008, 01:17 PM	#6
Moose67 Registered User Join Date: Sep 2008 Location: Borger, Texas Posts: 66	Re: Vacuum Source for Brake Booster Sorry I left out some info. I have an ECE disc conversion and ordered the booster from them. It has the prop valve and the booster pictured below. I saw the offset breather in the FS section, but it will have a 350 in there before next summer. I am thinking about going with the open element air cleaner available from Summit or Jegs luvlegs-- Hose barn? Which part is that? Attached Images

11-07-2008, 01:29 PM	#8
Moose67 Registered User Join Date: Sep 2008 Location: Borger, Texas Posts: 66	Re: Vacuum Source for Brake Booster I pulled that off and its a blind hole. Can I just drill it out or what?

11-07-2008, 05:43 PM	#9
LuckyHenriksen Registered User Join Date: Oct 2007 Location: Sherwood Oregon Posts: 1,908	Re: Vacuum Source for Brake Booster I think he meant barb __________________ 1968 Yenko Chevy LWB 6.0L/TH400 3/4 Drop Senior Project Build Thread Here

11-07-2008, 08:53 PM	#10
factorystock Registered User Join Date: Feb 2007 Location: west coast Posts: 3,396	Re: Vacuum Source for Brake Booster No, it is not that circled piece.That is just a stud the accelerator linkage swivel attaches to on car applications.There is another threaded port just about 2 inches away to the left. It would be directly behind that black round thing in photo.



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