The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-24-2011, 01:47 PM   #1
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Power brake and PVC

Hello,

My truck has a E-Performer 600 with the power brakes hooked to the PVC port and the actual power brake port blocked. If I were to remove the screw/bolt from the power brake port, what would I need to install the power brake vacuum line there?

Also, my engine does not have a PVC valve installed. Someone told me to run 2 breather caps. Got to asking around and was told I need a pvc valve on passenger valve cover going to carb. Is this accurate? If so, when I do get this fixed, will I noticed any difference in the way the engine performs? As it stands now, if I put my foot into it for a bit and let off, I get a nice brownish cloud coming from the passenger side of the truck.

Thanks.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:05 PM   #2
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

You need an adapter that if you took off a quadrajet you need to pull it off the back and it will go right in
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Old 09-24-2011, 07:07 PM   #3
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Re: Power brake and PVC

Ah, well, this carb came pre-installed on my truck. Is there an adapter I can buy?

Thanks.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:07 PM   #4
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

you don't "need" a pcv valve. the breather cap will take care of it all the pcv valve does is force your engine to reburn it's exhaust
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Old 09-24-2011, 07:12 PM   #5
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Re: Power brake and PVC

Will I notice any difference in braking performance by hooking the brakes to the rear port on carb? Currently, the brakes can feel weak at times.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:13 PM   #6
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

The fitting or "connector" as it is called in the AIM is a 1/4 MIP male thread to an inverted female flare fitting that the brake vacumm tube screws into. i found this online. the guy said you can find it in a brass fitting
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Old 09-24-2011, 07:14 PM   #7
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

It will always brake strong with the engine running
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Old 09-24-2011, 07:15 PM   #8
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Re: Power brake and PVC

Ok, cool! Thanks! These are things I am keeping in mind when I replace my carb.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:16 PM   #9
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

you should be able to find it at a hardware store. And i'm about to go with a breather cause i canceled out my pcv valve as well
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Old 09-24-2011, 07:22 PM   #10
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Re: Power brake and PVC

All this was done before I bought my truck. I now have a breather cap on both valve covers. The thing that has been bothering me is the amount of steam coming from the passenger side valve cover after I put my foot in it. That is why I was thinking about putting a pvc valve back in.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:24 PM   #11
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Re: Power brake and PVC

Quote:
Originally Posted by Goldfinger View Post
The fitting or "connector" as it is called in the AIM is a 1/4 MIP male thread to an inverted female flare fitting that the brake vacumm tube screws into. i found this online. the guy said you can find it in a brass fitting
Is this what i need? http://www.lowes.com/pd_27631-104-A-...facetInfo=Barb

Or the 1/4 x 3/8 fitting?

Thanks.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:28 PM   #12
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

as long as you use rubber hose. if you still have the stock end on your power brakes you will need one with female threads that will go onto the end of it.
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Old 09-24-2011, 07:31 PM   #13
jdheff1982
Registered User
 
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
Re: Power brake and PVC

Quote:
Originally Posted by Goldfinger View Post
as long as you use rubber hose. if you still have the stock end on your power brakes you will need one with female threads that will go onto the end of it.
No I don't. The power brakes are plugged into the PVC port on carb. Isn't the standard size hose 3/8 inch for vacuum applications? If so, the 1/4 x 3/8 MIP fitting is the one I need then.
__________________
Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381
jdheff1982 is offline   Reply With Quote
Old 09-24-2011, 07:37 PM   #14
Goldfinger
Registered User
 
Goldfinger's Avatar
 
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
Re: Power brake and PVC

It may be i'm not sure on the sizes but it sounds right i'd bring a piece of the hose to give it a fit test
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]

1999 k3500 crew cab dually 6.5tdi/4l80e
Goldfinger is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:30 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com