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Converting to -AN Lines. Help Needed!!!

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Old Dec 26, 2011 | 06:33 PM
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Default Converting to -AN Lines. Help Needed!!!

Ok i've searched and this is probably a stupid question. I'm converting my fuel lines from the pump to carb to AN SS Braided lines. I can't get a straight answer on what fitting i'll need for the fuel pump to convert that to AN. I have everything else figured out but am not quite sure what fitting to order. I have a stock mechanical pump on a 350. Thanks ahead for any help.
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Old Dec 26, 2011 | 07:17 PM
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when in doubt, take the part to the tubing and hose store and show them. that way, there's never going to be a question of what you need.
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Old Dec 26, 2011 | 07:22 PM
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Originally Posted by Aflac
when in doubt, take the part to the tubing and hose store and show them. that way, there's never going to be a question of what you need.
I would definitely love to do that however i don't have a local store that carries an fittings so i'm reduced to ordering online.
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Old Dec 26, 2011 | 07:27 PM
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you don't have a industrial supply or even a NAPA or O'Reilly's that makes hoses near you???
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Old Dec 26, 2011 | 07:34 PM
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Originally Posted by Aflac
you don't have a industrial supply or even a NAPA or O'Reilly's that makes hoses near you???
Ive checked around at all the local shops and they can all order me fittings but don't carry them in stock. I figured that someone on here has done this before and could tell me what fitting I would use on the outlet of the fuel pump.
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Old Dec 26, 2011 | 07:36 PM
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The original pump has 1/4 npt with an adapter elbow that has 3/8 inverted flare which is 5/8 x 18 thread.
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Old Dec 26, 2011 | 07:41 PM
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Originally Posted by '75
The original pump has 1/4 npt with an adapter elbow that has 3/8 inverted flare which is 5/8 x 18 thread.
Awesome exactly what i was looking for. Thank you so much for your help
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Old Dec 26, 2011 | 07:47 PM
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It's almost certainly an NPT fitting unless it's a high-zoot aftermarket pump, so you'll need an NPT-to-AN fitting and then the appropriate AN hard- or soft-line fitting.

It's not hard to find the right NPT size - just go to your hardware store and get a brass 5/16" and 3/8" NPT fitting to check the size.

For a hard line, the size of the AN fitting is the size of the line / 1/16"...for example, a 3/8" line = 6/16ths = 6 AN. 6 AN is fine for mild carb'd applications...although if you're making all new lines doing 8 AN isn't a bad investment.

More information on the specifics would help with a more specific recommendation.

Once you have the NPT and AN size, just order the fitting from your favorite online vendor

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