3/8" or 1/2" fuel line for a 505
#2778632
05/27/20 10:07 AM
05/27/20 10:07 AM
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Joined: Aug 2009
Posts: 1,317 Ohio
jlatessa
OP
pro stock
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OP
pro stock
Joined: Aug 2009
Posts: 1,317
Ohio
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Starting on our 71 RR, engine is a 10.7 Cr 440 stroker in front of a built 727 and 3.54s, Beefed up 11" convertor
Dynoed at 620 HP, 640 TQ, RPMs limit at 6000. Solid roller.
This is primarily a street car, 4000# may be one or two outings to sort out suspension etc.
Electric pump only, single 950, dual plane MW Indy, Max wedge Victors.
I'm thinking 3/8" should suffice, but before I spring for the lines, I thought I'd see what the masters think.
Thanks, Joe
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Re: 3/8" or 1/2" fuel line for a 505
[Re: MR_P_BODY]
#2778664
05/27/20 11:15 AM
05/27/20 11:15 AM
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Joined: Dec 2013
Posts: 4,669 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,669
Wichita
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3/8" will be more than enough.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: 3/8" or 1/2" fuel line for a 505
[Re: sasquatch]
#2778733
05/27/20 01:28 PM
05/27/20 01:28 PM
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Joined: Dec 2005
Posts: 1,495 Shelby mi.
JAKE68
pro stock
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pro stock
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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Just a short story. Ron mancini had a b-1 powered car that made around 950 hp. It had two carter fuel pumps and 3/8 line. So someone told him he would pick up big time going to 1/2 and a better fuel system. He went complete system with 1/2 with magna fuel system. Never picked up at all. So to answer your question 3/8 will be fine.
Last edited by JAKE68; 05/27/20 01:29 PM.
JAKES AUTOMOTIVE
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Re: 3/8" or 1/2" fuel line for a 505
[Re: jlatessa]
#2778745
05/27/20 02:09 PM
05/27/20 02:09 PM
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Joined: Aug 2003
Posts: 43,118 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,118
Bend,OR USA
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Are you talking about the outside diameter or inside diameter of the new line? if inside diameter 3/8 inch is fine, if outside diameter go with the 1/2 inch What brand and size electric pump are you going too use? Not all of them work good
Last edited by Cab_Burge; 05/27/20 02:10 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 3/8" or 1/2" fuel line for a 505
[Re: jlatessa]
#2778782
05/27/20 04:08 PM
05/27/20 04:08 PM
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Joined: Feb 2005
Posts: 4,311 Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,311
Prospect, PA
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Mine is similar to yours in a lot of ways. 508 street car, small roller, shift around 6400, Indy dual plane, 950 carb with 0.110" N&S, stock converter. 4150 lbs and runs in the high 11s at 120 mph with a 1.9 sec 60 ft.
I have 3/8" line and a Mallory 140 pump regulated to 6 psi. It runs about 4 psi down the track and through the traps. If you're lifting the tires off the ground, consider 1/2".
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Re: 3/8" or 1/2" fuel line for a 505
[Re: BSB67]
#2778799
05/27/20 04:43 PM
05/27/20 04:43 PM
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Joined: Dec 2013
Posts: 4,669 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,669
Wichita
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I've posted it here before and people tend not to believe so....
I've ran 11.19 @ 121 mph in a 3,600 lbs. car with the slant 6 OE 5/16 fuel line from tank to Carter street/strip pump. 3/8 from pump to carb. Stock (replacement) tank and pickup.
Last edited by GY3; 05/27/20 04:44 PM.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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