questions about the elimination of EEC canister in 72 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**yote1234** · 02-11-2010, 04:34 PM

i want to eliminate the eec canister in my 72 cheyenne during my restoration. i know the fuel cap needs to be changed to a vented one.

my questions are...
1- can i use my original tank,and neck?
2- do i need new single tube sending unit ?
3- do i run only (1) fuel line from tank to carb ? and what size ?
4- will the new vented cap fit my factory 1972 tank?
5-after change,can i eliminate the in cab wall vent line?

thanx in advance... dave

bgons · 02-11-2010, 06:53 PM

I have the same question

**yote1234** · 02-14-2010, 12:39 AM

anyone know???

BLACK AND BLUE 67-72 · 02-14-2010, 01:18 AM

1. Yes you can use your original tank.

2. No you do not need a single tube sending unit.

3. Yes only 1 line and either 5/16 or 3/8 line depending on what engine you have you can use your line that is feeding your fuel pump now, unless it is rusted and has holes in it.

4. I am using my orginal cap and I have had no issues, because it is a vented system already, that is what the extra line is going up into the cab.

5. You can but why worry about it? You can't see it and mine never smells the cab up, so I don't really see the need to pull it out.

Hope this helps!!

GASoline71 · 02-14-2010, 01:30 AM

I couldn't have said it better myself B&B.

When I was redoing my fuel system in my 1972 I even took out all the Evap lines that ran along the frame rails, and blocked them off at the tank. Still have the original filler neck, have a stock unvented cap, and left the stuff in the cab and door jamb alone. No sweat...

Gary

**yote1234** · 02-14-2010, 09:04 PM

interesting.so what needs to be done with the extra line on the sending unit? block off? . i thank you for reply's... dave

BLACK AND BLUE 67-72 · 02-15-2010, 07:12 PM

Mine is still hooked up in the cab but it is blocked off by the fuel pump.

**yote1234** · 02-16-2010, 11:21 AM

Quote:

Originally Posted by BLACK AND BLUE 67-72

Mine is still hooked up in the cab but it is blocked off by the fuel pump.

thanx..........

BLACK AND BLUE 67-72 · 02-16-2010, 11:38 AM

Anytime!!

GREASEMONKEY72 · 02-16-2010, 03:30 PM

i agree, i yanked the canister out of my truck and ive still got the stock vent line and stock cap

02-11-2010, 04:34 PM	#1
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,406	questions about the elimination of EEC canister in 72 i want to eliminate the eec canister in my 72 cheyenne during my restoration. i know the fuel cap needs to be changed to a vented one. my questions are... 1- can i use my original tank,and neck? 2- do i need new single tube sending unit ? 3- do i run only (1) fuel line from tank to carb ? and what size ? 4- will the new vented cap fit my factory 1972 tank? 5-after change,can i eliminate the in cab wall vent line? thanx in advance... dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

02-11-2010, 06:53 PM	#2
bgons Registered User Join Date: Dec 2009 Location: Los Angeles,California Posts: 27	Re: questions about the elimination of EEC canister in 72 I have the same question

02-14-2010, 12:39 AM	#3
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,406	Re: questions about the elimination of EEC canister in 72 anyone know??? __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

02-14-2010, 01:18 AM	#4
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Re: questions about the elimination of EEC canister in 72 1. Yes you can use your original tank. 2. No you do not need a single tube sending unit. 3. Yes only 1 line and either 5/16 or 3/8 line depending on what engine you have you can use your line that is feeding your fuel pump now, unless it is rusted and has holes in it. 4. I am using my orginal cap and I have had no issues, because it is a vented system already, that is what the extra line is going up into the cab. 5. You can but why worry about it? You can't see it and mine never smells the cab up, so I don't really see the need to pull it out. Hope this helps!! __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

02-14-2010, 09:04 PM	#6
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,406	Re: questions about the elimination of EEC canister in 72 interesting.so what needs to be done with the extra line on the sending unit? block off? . i thank you for reply's... dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey Last edited by yote1234; 02-14-2010 at 09:12 PM. Reason: add

02-15-2010, 07:12 PM	#7
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Re: questions about the elimination of EEC canister in 72 Mine is still hooked up in the cab but it is blocked off by the fuel pump. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

02-16-2010, 11:38 AM	#9
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Re: questions about the elimination of EEC canister in 72 Anytime!! __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

02-16-2010, 03:30 PM	#10
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: questions about the elimination of EEC canister in 72 i agree, i yanked the canister out of my truck and ive still got the stock vent line and stock cap __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME



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