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5/16" vs 3/8" fuel line #745708 07/11/10 06:19 PM 07/11/10 06:19 PM
Joined: Dec 2006 Posts: 972 alabama M mopars rule OP mopar addict
mopars rule OP mopar addict M Joined: Dec 2006 Posts: 972 alabama	I have a 67 Dart (street car)with a 340, nothing radical just a little above stock with mild cam headers and eddie intake, 750 (3310)holley. 3000 stall converter with 3.91 gears. I am going to replace all the fuel lines, tank and sending unit. My question is while I am dong this should I upgrade to the 3/8" lines and pickup or stick with the 5/16" system. What are the limits of the 5/16" lines as far as restricting power?

Re: 5/16" vs 3/8" fuel line [Re: mopars rule] #745709 07/11/10 06:42 PM 07/11/10 06:42 PM
Joined: Oct 2009 Posts: 92 south carolina U.S. D DOUGG member
DOUGG member D Joined: Oct 2009 Posts: 92 south carolina U.S.	IF YOU ARE GOING TO CHANGE IT ALL ANYWAY, I WOULD UPGRADE TO THE LARGER LINE AND SENDING UNIT. IF YOU KEEP ADDING POWER TO YOUR CAR YOU WILL FIND THE LIMIT ON THAT SMALLER LINE. THERE'S NOTHING WORSE THAN DRIVING YOUR CAR TO THE TRACK, PULLING A CAR LENGTH ON A TRAILERED CAR WITH SLICKS ONLY TO LOSE TO HIM BY 4 LENGTHS BECAUSE YOU COULD'NT GET ENOUGH FUEL IN THIRD GEAR. BIGGER IS BETTER. [

Re: 5/16" vs 3/8" fuel line [Re: DOUGG] #745710 07/11/10 07:14 PM 07/11/10 07:14 PM
Joined: Nov 2006 Posts: 3,407 S.E. Florida, USA rrunner master
rrunner master Joined: Nov 2006 Posts: 3,407 S.E. Florida, USA	with the above, just not gonna shout it.

Re: 5/16" vs 3/8" fuel line [Re: rrunner] #745711 07/11/10 07:31 PM 07/11/10 07:31 PM
Joined: Jan 2003 Posts: 644 Warner Robins, Georgia D DusterMan super street
DusterMan super street D Joined: Jan 2003 Posts: 644 Warner Robins, Georgia	If you are taking everything out and replacing them it wont hurt. When I had my Duster 360 I ran 11.60's @ 116 MPH and I was running stock fuel lines and a mech pump and never had any problems. Pete: 2003 Dodge Quad 2500 Hemi 69 RoadRunner 4 sp Alpine White 2019 Dodge Charger

Re: 5/16" vs 3/8" fuel line [Re: DusterMan] #745712 07/11/10 08:36 PM 07/11/10 08:36 PM
Joined: May 2004 Posts: 12,418 Taxes & Virus's R-US, NY Dragula I Live Here
Dragula I Live Here Joined: May 2004 Posts: 12,418 Taxes & Virus's R-US, NY	Then there's guys like me and I just replaced all the fuel lines on my 360 powered truck with AN10... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: 5/16" vs 3/8" fuel line [Re: Dragula] #745713 07/11/10 10:27 PM 07/11/10 10:27 PM
Joined: Dec 2006 Posts: 972 alabama M mopars rule OP mopar addict
mopars rule OP mopar addict M Joined: Dec 2006 Posts: 972 alabama	I was leaning toward the 3/8" line a little anyway, just wasn't sure. Guess I will go ahead and do it. Thanks fellas.

Re: 5/16" vs 3/8" fuel line [Re: DOUGG] #745714 07/11/10 10:56 PM 07/11/10 10:56 PM
Joined: Apr 2010 Posts: 1,216 Under My Car Mopar_Country pro stock
Mopar_Country pro stock Joined: Apr 2010 Posts: 1,216 Under My Car	Quote: IF YOU ARE GOING TO CHANGE IT ALL ANYWAY, I WOULD UPGRADE TO THE LARGER LINE AND SENDING UNIT. IF YOU KEEP ADDING POWER TO YOUR CAR YOU WILL FIND THE LIMIT ON THAT SMALLER LINE. THERE'S NOTHING WORSE THAN DRIVING YOUR CAR TO THE TRACK, PULLING A CAR LENGTH ON A TRAILERED CAR WITH SLICKS ONLY TO LOSE TO HIM BY 4 LENGTHS BECAUSE YOU COULD'NT GET ENOUGH FUEL IN THIRD GEAR. BIGGER IS BETTER. Why you yelling?

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