Gas Tank - EEC Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PunkRock247 · 07-12-2004, 12:22 PM

I have a 1969 C-10 I am in the middle of building. I picked up a 72 gas tank with the EEC fittings on it cheap to replace the rusty mess I had. My question is can I just block the EEC fittings on the 72 tank because it is going in my 69? And if so is there any special gas cap I need to use or will any 72 gas cap work? Or should I just junk the 72 tank and look for another gas tank without the EEC mess?

Thanks in advance for any help.

Robert1970C20rstbukt · 07-12-2004, 01:22 PM

I had the same problem. The tank in my 70 had huge chunks of rust in it so I got a tank from a 72 at the junkyard. It was a tank with EEC, but I just put vacum caps over the EEC fittings, and I used a vented gas cap and I haven't had any problems.

PunkRock247 · 07-12-2004, 01:30 PM

Thanks Robert,

Did you have to specifically look for a vented cap or did you just use the cap from your original 70 gas tank?

Robert1970C20rstbukt · 07-12-2004, 11:33 PM

The tank I got was from a 1/2 ton (my truck's a 3/4) so I guess the filler neck opening was smaller and my original cap didn't fit, so I had to buy another. I had to buy a vented cap because that's the only way air can get out of the tank since I closed off all the EEC fittings.

PunkRock247 · 07-13-2004, 12:08 AM

Cool, thanks for the help. I will go out and find a vented cap. Thanks again.

07-12-2004, 12:22 PM	#1
PunkRock247 Registered User Join Date: Dec 2002 Location: Antelope, CA Posts: 44	Gas Tank - EEC Question I have a 1969 C-10 I am in the middle of building. I picked up a 72 gas tank with the EEC fittings on it cheap to replace the rusty mess I had. My question is can I just block the EEC fittings on the 72 tank because it is going in my 69? And if so is there any special gas cap I need to use or will any 72 gas cap work? Or should I just junk the 72 tank and look for another gas tank without the EEC mess? Thanks in advance for any help. __________________ 1969 Chevrolet C-10 SWB

07-12-2004, 01:22 PM	#2
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	I had the same problem. The tank in my 70 had huge chunks of rust in it so I got a tank from a 72 at the junkyard. It was a tank with EEC, but I just put vacum caps over the EEC fittings, and I used a vented gas cap and I haven't had any problems. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck Last edited by Robert1970C20rstbukt; 07-12-2004 at 01:24 PM.

07-12-2004, 01:30 PM	#3
PunkRock247 Registered User Join Date: Dec 2002 Location: Antelope, CA Posts: 44	Thanks Robert, Did you have to specifically look for a vented cap or did you just use the cap from your original 70 gas tank? __________________ 1969 Chevrolet C-10 SWB

07-12-2004, 11:33 PM	#4
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	The tank I got was from a 1/2 ton (my truck's a 3/4) so I guess the filler neck opening was smaller and my original cap didn't fit, so I had to buy another. I had to buy a vented cap because that's the only way air can get out of the tank since I closed off all the EEC fittings. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

07-13-2004, 12:08 AM	#5
PunkRock247 Registered User Join Date: Dec 2002 Location: Antelope, CA Posts: 44	Cool, thanks for the help. I will go out and find a vented cap. Thanks again. __________________ 1969 Chevrolet C-10 SWB

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