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 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-28-2016, 08:39 PM   #1
Benny-
Registered User
 
Join Date: Apr 2013
Location: Ogden, UT
Posts: 123
What is this line?

Going into the intake between the dist and carb. Hard line. Is it necessary? Pcv?
__________________
1972 C/10 Cheyenne, Daily Driver. SOLD

1978 GMC K15 High Sierra.
Benny- is offline   Reply With Quote
Old 10-28-2016, 08:43 PM   #2
hugger6933
Registered User
 
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
Re: What is this line?

Looks like it could be for trans vacuum modulator. also that barb on the back of the carb should g to the brake booster or plug it off if you want it to run right. Just in case you didn't know
hugger6933 is offline   Reply With Quote
Old 10-28-2016, 09:38 PM   #3
custom10nut
Registered User
 
custom10nut's Avatar
 
Join Date: Apr 2015
Location: East Tn (In the heart of the Smoky Mtns)
Posts: 1,887
Re: What is this line?

Hugger is right, on both points. You need the vacuum modulator to shift correctly, and you truck would have a lot of hesitation problems with that direct vacuum port unplugged.
custom10nut is offline   Reply With Quote
Old 10-28-2016, 10:41 PM   #4
Benny-
Registered User
 
Join Date: Apr 2013
Location: Ogden, UT
Posts: 123
Re: What is this line?

Thanks guys. I have a new edelbrock intake to put on. Was hoping to use that port for booster vacuum. Oddly enough I put that brass fitting in the adapter hoping to get vacuum for the booster and there's no vacuum there. Not sure why but I'm not going to worry about it since I'll be replacing the intake anyway.
__________________
1972 C/10 Cheyenne, Daily Driver. SOLD

1978 GMC K15 High Sierra.
Benny- 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 12:54 PM.


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