5.3 Vortec Vacuum Ports (2002) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Curt - TN · 07-03-2017, 04:22 PM

For those who have installed a 5.3 Vortec in your truck did you find any vacuum line routing diagrams on what is needed and what can be plugged?

47 Fasttoys · 07-03-2017, 09:40 PM

I think the only thing you need is vacuum for the power booster, if equipped. The LS based engines don't use vacuum signals for engine management. Any EGR vacuum and the carbon canister vacuum can both be plugged for stand alone.
Rob

tmoble · 07-04-2017, 10:49 PM

do they have a vacuum line for fuel pressure regulator?

47 Fasttoys · 07-05-2017, 07:54 PM

Depends on the year, If a return style fuel rail yes it uses a vacuum line to the regulator. very short molded piece of rubber tube which connects to the intake. The later use a regulator at the pump.
Rob

Curt - TN · 07-05-2017, 08:00 PM

Quote:

Originally Posted by 47 Fasttoys

Depends on the year, If a return style fuel rail yes it uses a vacuum line to the regulator. very short molded piece of rubber tube which connects to the intake. The later use a regulator at the pump.
Rob

Mine is a return system and that little vacuum line and adapter to the small line on the rail is what I am missing

07-03-2017, 04:22 PM	#1
Curt - TN Registered User Join Date: Feb 2016 Location: Brentwood, TN Posts: 138	5.3 Vortec Vacuum Ports (2002) For those who have installed a 5.3 Vortec in your truck did you find any vacuum line routing diagrams on what is needed and what can be plugged? __________________ Curt Brentwood TN 1950 Chevy 5 Window 3100 - Check out my Build Thread: http://67-72chevytrucks.com/vboard/showthread.php?t=724260 1957 GMC 100

07-03-2017, 09:40 PM	#2
47 Fasttoys Registered User Join Date: Sep 2013 Location: Westminster, SC Posts: 933	Re: 5.3 Vortec Vacuum Ports (2002) I think the only thing you need is vacuum for the power booster, if equipped. The LS based engines don't use vacuum signals for engine management. Any EGR vacuum and the carbon canister vacuum can both be plugged for stand alone. Rob __________________ My '47 C.O.E build

07-04-2017, 10:49 PM	#3
tmoble Registered User Join Date: Feb 2009 Location: Glendale, Az Posts: 1,062	Re: 5.3 Vortec Vacuum Ports (2002) do they have a vacuum line for fuel pressure regulator?

07-05-2017, 07:54 PM	#4
47 Fasttoys Registered User Join Date: Sep 2013 Location: Westminster, SC Posts: 933	Re: 5.3 Vortec Vacuum Ports (2002) Depends on the year, If a return style fuel rail yes it uses a vacuum line to the regulator. very short molded piece of rubber tube which connects to the intake. The later use a regulator at the pump. Rob __________________ My '47 C.O.E build



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