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07-05-2019, 12:47 AM | #1 |
Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,495
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Re: '75 C20 dual fuel tank issue/questions
Yes, that is the factory setup for many 75's. Mine has the same thing. The vent is the same as ones on the differentials.
If you attempt to relocate the filler vent, keep in mind these tanks have a large slosh factor. You could wind up dumping a fair amount of gas each time you speed up. |
07-05-2019, 06:07 PM | #2 | ||
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Join Date: Apr 2018
Location: Penngrove, CA
Posts: 697
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Re: '75 C20 dual fuel tank issue/questions
Quote:
Quote:
Yeah you're probably right about the sloshing... perhaps if i ran the vent tube high enough or at least a long enough hose it'd keep the fuel from making it all the way out the end... However I also realize that if I disconnect the vent hose from the filler neck then I have a direct hole in the side of the filler neck that would dump fuel on the ground when it backed up into neck upon filling up. I filled up this morning on the way to work, 15 gallons, and I timed it. It took 11 minutes. Now that's 11 minutes of actual pumping time, with me bent over double, two hands on the fuel pump nozzle, braced against the side of the truck with ever so slight pressure on the nozzle. What a PITA! I'm actually surprised nobody has solved this one yet (or at least nobody's solved it and posted about it...) Hopefully some new vents will improve filling. We shall see... The vent i found on Jegs https://www.jegs.com/i/Performance+T...E&gclsrc=aw.ds
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"Sweet Pea" 1975 Cheyenne 20 http://67-72chevytrucks.com/vboard/s...00#post8477900 "Bourbon" 1975 Suburban ScottsdaleSOLD https://67-72chevytrucks.com/vboard/...49#post8769049 ”Otis” 1970 C10 SWB -SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=762766 ”Chebby” 1962 Impala LS/TKO-500 http://www.pro-touring.com/threads/1...2-Impala-Build |
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