'72 In Cab Tank Swap Into '69 - What I Need To Know?

[LilTruckMan'69]

So I just picked up a good used '72 tank for my '69. In cab style. I found out that this is the ?EEC? Or something like that. The emissions, evaporation some kind of whatever. You guys know what i'm talking about. Am I going to run into any probs switching these out? I'm guessing it will fit, will bolt in to same mounts, but maybe I have to plug a breather line or something. Didn't get a chance to really look over mine to know what to compare to, and now i'm stuck at work. Have fun, and let me know what ya know! Thnx

[LilTruckMan'69]

Hi guys. Just picked up a new to me and in good condition '72 in cab tank. I needed it to replace my rusty tank with banged up filler neck that wouldn't seal.

At the time of purchase I was informed of the difference. The ?EEC? Or whatever it's called. I'm sure you guys know what i'm talking about. It's the emission/evaporation stuff. I am pretty confident that it will work, but figured i'd ask on here. I'm at work, and can't look at my stuff!

So I figure the new to me tank will fit, bolt up same as the old, and maybe I will have to plug a return/evaporation outlet of some kind. And I also suspect that it will be a pain to get the filler neck and it's rubber boot in and out. And it will probably rip.

So, that sound about right? Is this project Gunna work?

[69heavychevy]

if emissions isnt an issue for you then just plug and go!

[cdowns]

not a plug and go deal

the 72 tank uses a nonvented gascap// theoutlet that went to the charcoal canister is easily used as a vent/ but you need to take the venting hose into a high loop in the passenger side pillar then down thru cab floor and i like to have it go down frame rail and in back of the cab

[LilTruckMan'69]

Originally Posted by cdowns

not a plug and go deal

the 72 tank uses a nonvented gascap// theoutlet that went to the charcoal canister is easily used as a vent/ but you need to take the venting hose into a high loop in the passenger side pillar then down thru cab floor and i like to have it go down frame rail and in back of the cab

Any chance of just drilling a hole in cap? I think I would prefer your method since I'm really not liking the gas spewing out of my tank and down my truck. I here ya on the hose routing. almost asked what you use at the end, but I think I got something. Air filter/muffler fitting. The brass fitting with porous stone in a flat topped cone shape. I think that would work. Looks like I need hose and a drill bit.