gas tank neck grommet? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

davebloomer · 08-07-2009, 08:23 PM

Can you change it without pulling the tank?

Also is there a difference in the grommet from 67-68 and 69-72?

big_al_71 · 08-07-2009, 09:12 PM

yes you can, use plenty of silicone as it is a PIA...Ask me how I know...

71big block · 08-07-2009, 10:02 PM

There are 2 different gaskets but I don't know the year applications, check the LMC website

68gmsee · 08-08-2009, 10:44 AM

I've done it a couple of times. The first time I did from the outside in with a wooden dowl slightly chisel shaped and smoothed. As mentioned by big-al, use lots of silicone lubricant or other lubricant that won't damage your paint.

Last year I replace the one on my 68 GMC and I did it a different way. I pushed it all the way through first and then installed it outwards from the inside. I used Armorall spray as a lubricant cause that's all I had at the time. Seem to work pretty good.

08-07-2009, 08:23 PM	#1
davebloomer Registered User Join Date: Apr 2009 Location: Weatherford, OK Posts: 220	gas tank neck grommet? Can you change it without pulling the tank? Also is there a difference in the grommet from 67-68 and 69-72?

08-07-2009, 09:12 PM	#2
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: gas tank neck grommet? yes you can, use plenty of silicone as it is a PIA...Ask me how I know... __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild

08-07-2009, 10:02 PM	#3
71big block 1971 GMC 3/4 ton, 572 CID Join Date: Aug 2007 Location: Green Bay, WI Posts: 293	Re: gas tank neck grommet? There are 2 different gaskets but I don't know the year applications, check the LMC website __________________ 71 GMC 3/4 572 CID, 1988 GMC 1/2 2006 Saturn Vue "We always have parts left over on a job this size"

08-08-2009, 10:44 AM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: gas tank neck grommet? I've done it a couple of times. The first time I did from the outside in with a wooden dowl slightly chisel shaped and smoothed. As mentioned by big-al, use lots of silicone lubricant or other lubricant that won't damage your paint. Last year I replace the one on my 68 GMC and I did it a different way. I pushed it all the way through first and then installed it outwards from the inside. I used Armorall spray as a lubricant cause that's all I had at the time. Seem to work pretty good.



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