New fuel sender won't fit?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fastazhell · 12-21-2007, 11:01 AM

Did some work on the truck this weekend and one of the things I did was replace the fuel sender. Got the seat removed and the old one out and just as i suspected, the brass float was full of gas. well decided to put the new one in anyway but once I went to hook the fuel line back up I noticed that the new sender had a much larger fitting on it than my fuel line did. Pretty sure the fuel line is like a 1/4" NPT and the sender is like 3/8 NPT. Did i get the wrong sender? My truck is a 71 and i bought the one from Ecklers since they are like 20 minutes away from me. For the time being I just put the old one back in with the new float, but I'd like to get the new one in at least for the new strainer assembly. Just wondering if anyone else has come across this...

Olden Days · 12-21-2007, 11:41 AM

v8 trucks had 3/8 fuel lines and 6 cyl trucks had 5/16

**john** · 12-21-2007, 12:36 PM

Also FYI those are inverted flare fittings, not NPT.

Sweet72 · 12-21-2007, 02:20 PM

The little 307 V8 got a 5/16 fuel line too!

fastazhell · 12-22-2007, 03:24 AM

I was thinking it might be something like that...but all the numbers from the truck indicate it is an original 350/350 truck from the factory. very interesting.....oh well i'm sure i can source an adapter from the speed shop or something to connect the two. thanks for the input.

12-21-2007, 11:01 AM	#1
fastazhell Registered User Join Date: Sep 2007 Location: Orlando, FL Posts: 39	New fuel sender won't fit?? Did some work on the truck this weekend and one of the things I did was replace the fuel sender. Got the seat removed and the old one out and just as i suspected, the brass float was full of gas. well decided to put the new one in anyway but once I went to hook the fuel line back up I noticed that the new sender had a much larger fitting on it than my fuel line did. Pretty sure the fuel line is like a 1/4" NPT and the sender is like 3/8 NPT. Did i get the wrong sender? My truck is a 71 and i bought the one from Ecklers since they are like 20 minutes away from me. For the time being I just put the old one back in with the new float, but I'd like to get the new one in at least for the new strainer assembly. Just wondering if anyone else has come across this... __________________ 71 LWB c10- needs more work than I have money! ASE certified Ford Master Tech

12-21-2007, 11:41 AM	#2
Olden Days Living In The Past Join Date: Nov 2003 Location: Rockies Posts: 709	Re: New fuel sender won't fit?? v8 trucks had 3/8 fuel lines and 6 cyl trucks had 5/16

12-21-2007, 12:36 PM	#3
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: New fuel sender won't fit?? Also FYI those are inverted flare fittings, not NPT. __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

12-21-2007, 02:20 PM	#4
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	Re: New fuel sender won't fit?? The little 307 V8 got a 5/16 fuel line too! __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.

12-22-2007, 03:24 AM	#5
fastazhell Registered User Join Date: Sep 2007 Location: Orlando, FL Posts: 39	Re: New fuel sender won't fit?? I was thinking it might be something like that...but all the numbers from the truck indicate it is an original 350/350 truck from the factory. very interesting.....oh well i'm sure i can source an adapter from the speed shop or something to connect the two. thanks for the input. __________________ 71 LWB c10- needs more work than I have money! ASE certified Ford Master Tech



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