Help with Fuel line size
#1861676
07/01/15 11:32 PM
07/01/15 11:32 PM
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Joined: Feb 2007
Posts: 749
NY
Beep Beep
OP
super stock
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OP
super stock
Joined: Feb 2007
Posts: 749
NY
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I would like to replace my current fuel line from my mechanical pump to my carb.
I am running 3/8 hard fuel line from my tank to my mechanical pump and then a single 3/8 hard fuel feed to my Edelbrock carb. The motor made 500hp and I never had an issue with fuel delivery.
My new build should make just under 600hp. I would like to still use the 3/8 feed from the tank to the mechanical pump. My Edelbrock mechanical pump is rated for 600hp at 110gph. So hopefully this should support the power.
I would like to replace the fuel line from my fuel pump to my new dual feed carb.
Will the 6an line be enough or should I use the 8an?
Last edited by Beep Beep; 07/01/15 11:33 PM.
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Re: Help with Fuel line size
[Re: 383man]
#1861806
07/02/15 03:32 AM
07/02/15 03:32 AM
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Joined: Mar 2005
Posts: 1,373
Rancho Cucamonga, CA
D_C
pro stock
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pro stock
Joined: Mar 2005
Posts: 1,373
Rancho Cucamonga, CA
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I just read this good online article on Fuel Line Sizing. With sufficient pump pressure, 3/8 line can be good to 1,000 HP (so long as you have a good pickup, good high pressure pump, clean filter, etc). http://ipgparts.com/blog/fuel-line-sizing-what-size-do-i-need/That said, I mounted 1/2 inch line from the tank to the carb along with a return-type fuel regulator, return line and electric fuel pump.
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Re: Help with Fuel line size
[Re: Beep Beep]
#1861821
07/02/15 04:36 AM
07/02/15 04:36 AM
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Joined: Aug 2003
Posts: 43,364
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,364
Bend,OR USA
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I see guys that want to run a 1/2 inch line in the tank (or bigger  ) and up to the front to the carb. inlet fittings with # 8 AN fittnings on the carbs bowl with .110 needles and seats in the fuel bowls. I have guys tell me that I shouldn't run # 6 lines from my fuel regulator to the two # 6 AN fittings on my single Holley four barrel. Some times people need to stop and think, where is the smallest restriction in my feul system. If you can jet your carb. up fat enough now to slow your car down in the 1/4 mile your good  If not, your not 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Help with Fuel line size
[Re: D_C]
#1861948
07/02/15 12:49 PM
07/02/15 12:49 PM
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Joined: Jan 2003
Posts: 15,567
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,567
Omaha Ne
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I just read this good online article on Fuel Line Sizing. With sufficient pump pressure, 3/8 line can be good to 1,000 HP (so long as you have a good pickup, clean filter, etc). http://ipgparts.com/blog/fuel-line-sizing-what-size-do-i-need/That said, I mounted 1/2 inch line from the tank to the carb along with a return-type fuel regulator and electric fuel pump. Agreed on the article Do be aware that the author keeps referring to the ID of the line rather than the OD which seems to indicate what he calls 3/8 may actually be 1/2 OD he also refers to AN line VS Steel. So a bit
Last edited by TJP; 07/02/15 12:51 PM.
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Re: Help with Fuel line size
[Re: Beep Beep]
#1861961
07/02/15 01:09 PM
07/02/15 01:09 PM
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Joined: Jun 2007
Posts: 129
Springfield, MO
Steve88
member
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member
Joined: Jun 2007
Posts: 129
Springfield, MO
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I would like to replace my current fuel line from my mechanical pump to my carb.
I am running 3/8 hard fuel line from my tank to my mechanical pump and then a single 3/8 hard fuel feed to my Edelbrock carb. The motor made 500hp and I never had an issue with fuel delivery.
My new build should make just under 600hp. I would like to still use the 3/8 feed from the tank to the mechanical pump. My Edelbrock mechanical pump is rated for 600hp at 110gph. So hopefully this should support the power.
I would like to replace the fuel line from my fuel pump to my new dual feed carb.
Will the 6an line be enough or should I use the 8an?
The 6AN line would flow the same as your 3/8" fuel line. The 8AN line would be the same as a 1/2" line. AN fittings are measured in 16th's which means that 6AN is 6/16" which equals 3/8" and 8AN is 8/16" which eqauls 1/2" and so one.
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