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 03-14-2012, 05:05 PM   #1
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
87 Fuel Sending unit

I installed an 87 tank and sending unit in my 85 for the LS swap and I have 3 lines. I need to know what I do with the middle line, I have the feed and return hooked up I just need to figure something out with the 3rd line.
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline   Reply With Quote
Old 03-14-2012, 05:20 PM   #2
jhngardner367
Registered User
 
jhngardner367's Avatar
 
Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
Re: 87 Fuel Sending unit

I believe that's the vent line,and if you have fuel-injection it will have to be soldered/welded shut.
If its carburretted,just run it to a vent valve,or the fuel cannister(better).
__________________
Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect !
I'm busier than a one-legged cat,in a sandbox!
Veteran..and proud !
I can't fix what ain't broke....you want I should break it?
jhngardner367 is offline   Reply With Quote
Old 03-14-2012, 05:24 PM   #3
THE "10" SILVERADO
Registered User
 
THE "10" SILVERADO's Avatar
 
Join Date: Sep 2010
Location: Marble Falls, TX
Posts: 1,575
Re: 87 Fuel Sending unit

Shouldn't it be the vent to the charcoal canister?
__________________
Michael
Re-starting the neglected '77...http://67-72chevytrucks.com/vboard/s...=425464&page=9
THE "10" SILVERADO is offline   Reply With Quote
Old 03-14-2012, 05:29 PM   #4
jhngardner367
Registered User
 
jhngardner367's Avatar
 
Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
Re: 87 Fuel Sending unit

Yeah,that's what I mean.The black plastic one that we all catch on,once in a while!LOL!
There should already be a line for it.
__________________
Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect !
I'm busier than a one-legged cat,in a sandbox!
Veteran..and proud !
I can't fix what ain't broke....you want I should break it?

Last edited by jhngardner367; 03-14-2012 at 05:31 PM. Reason: fat fingers
jhngardner367 is offline   Reply With Quote
Old 03-14-2012, 07:23 PM   #5
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
Re: 87 Fuel Sending unit

That thing is long gone. Can I plug it with some rubber hose and fuel injection clamps?
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline   Reply With Quote
Old 03-14-2012, 07:55 PM   #6
jhngardner367
Registered User
 
jhngardner367's Avatar
 
Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
Re: 87 Fuel Sending unit

Yes,if it has a carb.But,you should then find a vented cap,or it may cause pressure in the line,and flood the carb,especially on warm days.That's what the charcoal cannister is for...to store fumes/vapor,until the engine runs again,at which time they are routed to the carb,to burn.
__________________
Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect !
I'm busier than a one-legged cat,in a sandbox!
Veteran..and proud !
I can't fix what ain't broke....you want I should break it?
jhngardner367 is offline   Reply With Quote
Old 03-14-2012, 10:35 PM   #7
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
Re: 87 Fuel Sending unit

I will be fuel injected. 2002 lq4 fyi
Posted via Mobile Device
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline   Reply With Quote
Old 03-15-2012, 11:40 AM   #8
rfmaster
Registered User
 
rfmaster's Avatar
 
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
Re: 87 Fuel Sending unit

See if a stock LQ4 (donor) uses CCP canister. If it does than set it up to use purge line (evap)

//RF
__________________
"The Beast"

1975 Chevrolet C20 longbed
350/700R4! with 3inch body lift
Dual Flowmasters Super 40's!
TBI retrofit completed (2007-07-29)
New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)
rfmaster 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 05:09 PM.


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