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| | | Forums66 Topics128,108 Posts1,056,231 Members48,436 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2003 Posts: 1,377 'Bolter | | 'Bolter Joined: Feb 2003 Posts: 1,377 | Been noticing a gas smell in my 37 and looked at the cap and noticed the seal needs replaced so would a O ring work. | | | | | Joined: Mar 2003 Posts: 315 'Bolter | | 'Bolter Joined: Mar 2003 Posts: 315 | I think that it would, I am a retired firefighter and I had some extra 1 1/2 hose coupling gaskets and they work like a charm. Stop by a fire station and see if you could trade a pizza for some gaskets. | | | | | Joined: Nov 2011 Posts: 141 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 141 | Make sure the vent is not plugged up. I ran a piece of heavy duty monofilament up the vent tube.
Trombones Totem Poles And Old Trucks!
| | | | | Joined: Apr 2007 Posts: 1,038 'Bolter | | 'Bolter Joined: Apr 2007 Posts: 1,038 | I improved the "gas smell" by extending the vent tube slightly out the bottom of the gas tank. This puts the bottom of the vent below the cab sheet metal. First I took a bronze firearm bore brush to clean the inside of the vent tube at the bottom. Then I took a one inch length of 1/4 inch brake line, beveled one end slightly and epoxied it into the vent.
I had disassembled the vent apparatus and studied the design. There is no way that the cork ring is going to seal the vent holes completely in the event of gas sloshing up against the holes. So it is inevitable that gas will drip from the vent and when you are driving fumes are going to blow into the cab environs. This must be why GM abandoned the design after one year and in 1938 returned to the gas filler outside of the cab. | | | | | Joined: Feb 2003 Posts: 1,377 'Bolter | | 'Bolter Joined: Feb 2003 Posts: 1,377 | Found a box of big O rings in the garage and found one that fit,it looks like I will need a 2 1/ ID/2 5/8 OD gasket.
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