Question about fuel fitting - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jmking9 · 05-24-2010, 12:39 AM

Im going to run braided fuel line from the stock tank to the carb. My question is does anyone know what fitting is required at the tank right out of the sending unit? Ive tried a 3/8 NPT to AN fitting and it doesnt fit. I dont have too much experience with this kind of thing, so any input is appreciated.

I borrowed this pic from a board member (hope he doesnt mind) to show where Im talking about.

Also should I use -6 or -8 An for the line?

1968SWBBigBlock · 05-24-2010, 07:14 AM

-6 should be fine as long as you do not have a crazy killer motor
I urge your caution running all braided line for your fuel - the liner is permiable and will soften over time allow fuel fumes to escape.
This is hastened if you us bad fuel

custom70 · 05-24-2010, 07:40 AM

x2, why not just connect it under the cab instead. Then you won't have a smell problem in the cab later.

jmking9 · 05-24-2010, 10:21 AM

Quote:

Originally Posted by custom70

x2, why not just connect it under the cab instead. Then you won't have a smell problem in the cab later.

Is the hard line that comes out of the cab 3/8 tube? If so, do you think this fitting from summit will work.

http://www.summitracing.com/parts/RUS-639210/

custom70 · 05-24-2010, 01:56 PM

If the line is 3/8 I think that might work. Although it does mention it is for aluminium line? Don't know how it will work on steel line?

71tahoe · 05-24-2010, 02:40 PM

Speedway may have a better selection. The tube is an inverted flare fitting (IFF) and they should have an IFF to AN adapter.

05-24-2010, 12:39 AM	#1
jmking9 Registered User Join Date: Sep 2006 Location: Riverton KS Posts: 832	Question about fuel fitting Im going to run braided fuel line from the stock tank to the carb. My question is does anyone know what fitting is required at the tank right out of the sending unit? Ive tried a 3/8 NPT to AN fitting and it doesnt fit. I dont have too much experience with this kind of thing, so any input is appreciated. I borrowed this pic from a board member (hope he doesnt mind) to show where Im talking about. Also should I use -6 or -8 An for the line? Attached Images __________________ 1970 SWB Build

05-24-2010, 07:14 AM	#2
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Question about fuel fitting -6 should be fine as long as you do not have a crazy killer motor I urge your caution running all braided line for your fuel - the liner is permiable and will soften over time allow fuel fumes to escape. This is hastened if you us bad fuel __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

05-24-2010, 07:40 AM	#3
custom70 Registered User Join Date: Dec 2008 Location: Gastonia,NC Posts: 137	Re: Question about fuel fitting x2, why not just connect it under the cab instead. Then you won't have a smell problem in the cab later. __________________ Tim

05-24-2010, 01:56 PM	#5
custom70 Registered User Join Date: Dec 2008 Location: Gastonia,NC Posts: 137	Re: Question about fuel fitting If the line is 3/8 I think that might work. Although it does mention it is for aluminium line? Don't know how it will work on steel line? __________________ Tim Last edited by custom70; 05-24-2010 at 01:59 PM. Reason: mistake

05-24-2010, 02:40 PM	#6
71tahoe Registered User Join Date: May 2006 Location: Jonesboro, AR Posts: 916	Re: Question about fuel fitting Speedway may have a better selection. The tube is an inverted flare fitting (IFF) and they should have an IFF to AN adapter.



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