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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

advice needed

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Old 08-24-2013, 10:25 PM   #1
Join Date: Aug 2013
Vehicle: 91 notch lx
Location: canada
Posts: 5
Default advice needed

hey guys i don't have very much experience with carbs and need your expertise. i am a journeymen heavy duty mechanic and when it comes to diesel engines thats my playing field. carb setups well lets just say iam learning.

anyway back to my question. i am in the process of converting my 4banger to a v8 and going the carb route. i am just wondering if you would need to run a return line back to tank. i have a edelbrock fuel pump p/n 1791 it is set to 6.5 psi and i am running 3/8 fuel lines to a holley regulator before my proform 650 carb. do i need to run a return line or just have it deadheaded??

this is something that i don't know and need some advise from a pro
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Old 08-25-2013, 06:29 AM   #2
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Join Date: Sep 2011
Vehicle: 89 Mustang
Location: Ohio
Posts: 325

No return line required.
89 Coupe, 369 big bore, AFR, custom Comp cam, Kooks, 3" exhaust, 11.6 @ 121 mph
04 Cobra, JLT 12" CAI, Magnaflow, Borla, Stifflers, FTBR Rr Susp, MM Frt Susp, 12.4 @ 115 mph
67 Cougar, XR7 GT, 462 FE, 4 spd, Edelbrock heads, PI intake, Global West
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Old 08-25-2013, 08:51 AM   #3
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Join Date: Jul 2012
Vehicle: 1990 lx hatch 5.0
Location: ohio
Posts: 2,934

never mind I was wrong lol

My old mechanical pump had a return line , but the pmp your using doesn't need one.

Last edited by dawson1112; 08-25-2013 at 08:54 AM.
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Old 08-25-2013, 08:51 AM
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