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03-24-2004, 11:36 AM
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#1 |
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Senior Member
 Join Date: May 2002
Location: mt juliet, tennessee, usa
Posts: 237
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Fuel Line - Schmuel Line
I've had my 69 C-10 P/U for about 2 years
now. I have replaced most of the guages with autometer stuff. However the fuel guage does not indicate correctly. With the fuel guage on "E", it registers 1/2 tank if I put in 5 gallons. Way off. OK...so at the Louisville Swap Meet last weekend I bought a new fuel sender. Go to install it and the old fuel line is smaller and doesn't fit the fitting on the new fuel sender. The current fuel line is a 5/16. After trying a couple of larger sizes on the sending unit coupler, it appears to fit a 3/8 fuel line. So here's my question. Anybody out there got a bone stock 69 C-10 P/U with a 350 V8 ? If so what size fuel line do you have in you truck? Also how many sections of hard line do you have and how many sections of rubber line? I tried looking in my 69 C-10 Service Manual and also the LMC catalog. Can't find anything that states the size of the fuel line. Jim Mt Juliet 
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03-24-2004, 11:43 AM
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#2 |
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Resident Curmudgeon
 
Join Date: Dec 1999
Location: NH
Posts: 6,662
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3/8 for 4bbl carb (350/327) small block and big blocks.
5/16 for all others (2bbl small block (307) and all sixes)
__________________
Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter  Maybe I need to sell some of this crap  Yet another Bozo with a sawz-all |
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03-24-2004, 12:50 PM
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#3 | |
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Senior Member
Join Date: May 2002
Location: Hammond, WI
Posts: 1,817
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I had the same issue on my '69 GMC. but i had some brass reducers and just used that. i wrapped the threads in teflon tape, and that helped tremendously. it had a 350 with a 2bbl, but the line was a 3/8, and the sending unit was 5/16. i only had 2 rubber sections: one under the cab that went from the line in the cab to the line on the frame rail, and one that went from the line on the frame rail to the fuel pump on the engine.
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Mike 2001 Dakota R/T - Silver CC - 1 of 1671 •360 w/46RE •392 limited slip 1972 Chevy Suburban - Turquoise/Black 1969 Chevy C/10 - Blue LWB •350 w/ 700R4 •3.73 posi •PS PB A/C - SOLD  Using your turn signal is not "giving information to the enemy" 67-72 FAQ Quote:
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03-24-2004, 12:51 PM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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fuel sending units in these things ain't an exact science the 5gallons for 1/2tank thing would pretty much be the norm
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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