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 06-09-2010, 04:24 PM   #1
JimmyFloyd
Registered User
 
Join Date: Apr 2009
Location: Rochester, NY
Posts: 1,458
what is this for?

I pilled this off a 71 truck with a 350 in it. What is it for? It was in the front of the intake. It has two hose fittings at the top, and is solid at the bottom that goes into the manifold.

__________________
1970 Blazer 350/SM465/205 SOLD! | 1998 Z3
JimmyFloyd is offline   Reply With Quote
Old 06-09-2010, 04:26 PM   #2
storm9c1
*** That's interesting ***
 
storm9c1's Avatar
 
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 2,772
Re: what is this for?

Looks like the temp activated vacuum switch, most likely for the heat riser valve in the stock air cleaner snorkel.
__________________
Tom
Chevy by day...
1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E
2011 Chevy Caprice PPV 9C3 6.0L
1995 Chevy Caprice 9C1
1994 Chevy Caprice 9C1 #3
1995 Chevy Caprice Wagon #2
1995 Chevy Impala SS
Mopar by night...
1969 Dodge Charger
1972 Chrysler Newport 2dr Hardtop (27K miles)

Plus others...
storm9c1 is offline   Reply With Quote
Old 06-09-2010, 04:54 PM   #3
hayhauler71
Registered User
 
hayhauler71's Avatar
 
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
Re: what is this for?

thermal vac switch never had one on my 71 but seen alot on 74 on up thermostat housings and intake manifolds
hayhauler71 is offline   Reply With Quote
Old 06-09-2010, 10:04 PM   #4
71 super
Registered User
 
71 super's Avatar
 
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,080
Re: what is this for?

Later model piece that is smog related. 72 down did not use that unit.
__________________
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
71 super 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 05:31 PM.


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