How do you wire this for a new installation? I purchased the valve and wiring but with no wiring directions I might have to return it?

You should be able to look up a wiring diagram and find out which wires go where. It would be a little above my mechanic skill to tell you run this wire here and that one there. I know there are different wires for the different fuel level senders and wiring for the switch to activate the motor that switches it between the two tanks. It would be a little involved, but something that shouldn't be too difficult with the correct wiring diagram. Good luck!

will it fit on a 1980 chevy c20 ?

I used it on my 76 c10 worked just have to replace the switch also

Are the ports 3/8 & 5/16 in diameter for the feed and return

5/16 is the feed lines 3/8 is the return

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ACDelco U7000 Professional Fuel Tank Selector Valve

ACDelco U7000 Professional Fuel Tank Selector Valve

Product ID: 281031368

Details

Brand
ACDelco
Exterior finish
Plastic
Inlet connection size
3.38
Item dimensions L x W x H
16.5 x 8.6 x
Material
Plastic

⏳24-month unlimited mileage warranty

⚙️Precision 3.38in inlet/outlet ports

🛠️Durable plastic with bayonet thread

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€ 177.65

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Master your fuel flow with ACDelco precision!

SEAMLESS FUEL CONTROL - Professional-grade selector valve engineered for flawless fuel routing.
EFFORTLESS INSTALLATION - Flare and bayonet threaded connections designed for quick, secure setup.
LONG TERM PEACE OF MIND - Backed by a 24-month unlimited mileage warranty to keep you moving without worry.
PRECISION FIT FUNCTION - Manufactured to exact OEM standards ensuring perfect fit and reliable performance.
TRUSTED BRAND RELIABILITY - ACDelco’s legacy of automotive excellence powering your vehicle’s fuel system.

The ACDelco U7000 Professional Fuel Tank Selector Valve is a premium aftermarket replacement designed to meet OEM standards for fit, form, and function. Featuring 3.38-inch inlet and outlet ports with flare and bayonet threaded connections, it ensures precise and reliable fuel routing. Constructed from durable plastic and backed by a 24-month unlimited mileage warranty, this valve offers professional-grade performance trusted by automotive experts.

Specifications

ASIN	B0013FY5KW
Best Sellers Rank	#16,164 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Fuel Tank Selector Valves
Brand Name	ACDelco
Connector Type	Flare
Customer Reviews	4.4 4.4 out of 5 stars (342)
Exterior Finish	Plastic
Global Trade Identification Number	00036666252729
Included Components	ACDelco - Fuel Tank Selec (B) (U7000)
Inlet Connection Size	3.38 Millimeters
Inlet Connection Type	Solder
Item Dimensions	16.5 x 8.6 x 8.4 centimeters
Item Type Name	ACDelco - Fuel Tank Selec (B) (U7000)
Item Weight	318 g
Manufacturer	ACDelco
Manufacturer Part Number	12336290
Manufacturer Warranty Description	24 Months / Unlimited Miles on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.
Material Type	Plastic
Model Number	U7000
Number of Ports	2
Outlet Connection Size	3.38 Inches
Outlet Connection Type	Threaded
Set Name	ACDelco Professional
Size	3.38 inches (W) x 6.5 inches (L) x 3.31 inches (H)
Smart Home Compatibility	Not Smart Home Compatible
Specification Met	CE
Thread Size	3.38 inches
Thread Type	bayonet
UPC	036666252729
Unit Count	1 Count
Valve Type	Sorter Valve

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