![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Registered User
![]() Join Date: Jan 2015
Location: West Haven, Utah
Posts: 135
|
What kind of gas cap should I use?
Here's a picture of my tank and the catalog states that it's an EEC (Evaporative Emission Control) tank. So my question is do I need a vented cap or non vented cap?
Thanks
__________________
1970 C20 350/TH350, LB God Bless our Troops ![]() |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Jan 2013
Location: Mickleton, NJ
Posts: 1,776
|
Re: What kind of gas cap should I use?
Doesn't look like an EEC tank to me, but could be the photo.
EEC tanks have a vent port on the filler neck, and I don't see one there. If you are using the EEC system, you can use a non vented cap. if you don't have EEC or have plugged it off, you will want a vented cap.
__________________
Shawn 1970 Chevy C-10 SWB, 350, TKO 600 5 speed My build http://67-72chevytrucks.com/vboard/s...d.php?t=559881 |
![]() |
![]() |
![]() |
#3 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
|
Re: What kind of gas cap should I use?
. i have a new old stock gm gas cap for sale if you need it.
__________________
1967custom |
![]() |
![]() |
![]() |
#4 |
Registered User
![]() Join Date: Jan 2015
Location: West Haven, Utah
Posts: 135
|
Re: What kind of gas cap should I use?
Here's a picture of the catalog. Hard to tell if the picture has a vent port on the filler neck but I know my tank doesn't. Well now that I enlarged the photo I see the tube... getting old sucks. I thought the ridges on the neck vs a smooth neck was the criteria.
Thanks Lattimer
__________________
1970 C20 350/TH350, LB God Bless our Troops ![]() |
![]() |
![]() |
![]() |
#5 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
|
Re: What kind of gas cap should I use?
Doesn't look like an EEC tank to me. Here is a couple of pics of my EEC tank in my 1972 GMC.
Non EEC tank... run a vented cap. EEC tank... run a non-vented cap. Or like me... have an EEC tank without the EEC hooked up... run a vented cap. ![]() Gary
__________________
'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
|
||
![]() |
![]() |
![]() |
#6 |
Registered User
![]() Join Date: Jan 2015
Location: West Haven, Utah
Posts: 135
|
Re: What kind of gas cap should I use?
I see said the blind man!
![]() Thanks
__________________
1970 C20 350/TH350, LB God Bless our Troops ![]() |
![]() |
![]() |
![]() |
#7 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
|
Re: What kind of gas cap should I use?
You betcha!
![]() Gary
__________________
'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
|
||
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
|
Re: What kind of gas cap should I use?
The ribbed filler is the "safety filler" a deformable design independent of the EEC. 70 EEC usage was California emission only, 6000lb GVW and below (CK10).
__________________
Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|