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Old 11-22-2012, 09:38 AM   #1
dec010974
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fuel lines

good morning to all. Happy Turkey day! are any of the fuel lines that exit the fuel sending unit, or the fuel lines that exit the cab floor, or the fuel lines that are mounted along the frame rails 3/8 inches? also, are ther any return lines for fuel? the fuel lines that are questionable are the stock lines from a 1971 chevy c10. thanks for the assistance. again, happy holidays.
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Old 11-22-2012, 10:04 AM   #2
midniteblues
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Re: fuel lines

I'm thinking the v-8 trucks had the 3/8 line tank too carb. 6cly trucks had 5/16.
not 100% sure but I think 71 was the start the vent line its not a return line but I think i read somewhere that guys have set it up too be a return.
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Old 11-22-2012, 10:12 AM   #3
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Re: fuel lines

Not 100% sure for a 71 but for 72 there are 3 lines, fuel feed, vent, and return. 3/8s line is standard for V8s.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner.

1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components.

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Old 11-22-2012, 11:12 AM   #4
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Re: fuel lines

the truck was originally a v6 truck. it seems like the fuel lines are 5/16. are 3/8 in. fuel lines a must for lsx carbed engines?
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Old 11-22-2012, 11:15 AM   #5
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Re: fuel lines

Quote:
Originally Posted by dec010974 View Post
are 3/8 in. fuel lines a must for lsx carbed engines?
Yes
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner.

1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components.

My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703
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Old 11-22-2012, 11:18 AM   #6
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Re: fuel lines

LSx motors run on 3/8 feed and 5/16 return. Are you going to use a electric or mechanical fuel pump?
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Old 11-22-2012, 12:45 PM   #7
dec010974
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Re: fuel lines

well my 1971 c10 will sport a carbed lq4, with the gm hot cam. im in the the process of running my fuel lines with the stock tank, thats located in the cab. im using a holley blue electric fuel pump for fuel distribution duties. what are some suggestion/ideas for this process? all information is approeciation.
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