Fuel tank vent question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

'65 chevy lover · 11-29-2017, 08:52 PM

I recently installed an under bed fuel tank( top fill) I purchased from LMC. It has port that is supposed to be for a return line for Fuel Injection. Question is, does that need to be used as a vent for the tank, or does the tank vent thru the gas cap.

Thanks

P.S. I'll post up some pictures of the tank and some other stuff tomorrow.

Heater63 · 11-29-2017, 09:45 PM

I would (and did) install a vent line with a loop in it for rollover protection. I put a small filter on it to keep bugs and mud dabblers from fouling it.

vin63 · 11-29-2017, 10:57 PM

I would do a vent line at least the same size as your supply line. I had to install a couple of extra ports for high and low pressure returns and a vent with a filter so that it's EFI ready. I run a rollover ball vent fitting.

**The Rocknrod** · 11-29-2017, 11:50 PM

It's easier if your just using a carburetor system then yes use a rollover valve and tube it away. I prefer out and up with a loop or 90 in it for rollover protection.

Clif Dzzzz · 12-12-2017, 12:23 AM

What style of Rollover Safety Valve did ya use? Was it necessary to do any metal fabrication to install the unit? Any photo's - Suppliers - Part numbers.....

Thanks in advance.

**The Rocknrod** · 12-12-2017, 07:51 AM

Mine came with the tank but I did some mods see post #157 - http://67-72chevytrucks.com/vboard/s...=666226&page=7

vin63 · 12-15-2017, 11:00 AM

Here's a selection from Summit: https://www.summitracing.com/search/...Default&page=2

Quote:

Originally Posted by Clif Dzzzz

What style of Rollover Safety Valve did ya use? Was it necessary to do any metal fabrication to install the unit? Any photo's - Suppliers - Part numbers.....

Thanks in advance.

**The Rocknrod** · 12-15-2017, 11:27 AM

https://www.summitracing.com/parts/tnk-vv/overview/

AcampoDave · 12-16-2017, 10:55 PM

http://www.tanksinc.com/index.cfm/pa...prod/prd98.htm I put this in there.

'65 chevy lover · 12-16-2017, 11:32 PM

Quote:

Originally Posted by AcampoDave

http://www.tanksinc.com/index.cfm/pa...prod/prd98.htm I put this in there.

You have the same one I have. I haven't put it in yet and, I like the location you have yours.

Clif Dzzzz · 12-17-2017, 12:48 AM

Thanks for the info and location Idea.....

11-29-2017, 09:45 PM	#2
Heater63 Registered User Join Date: Dec 2007 Location: N Texas Posts: 580	Re: Fuel tank vent question I would (and did) install a vent line with a loop in it for rollover protection. I put a small filter on it to keep bugs and mud dabblers from fouling it. __________________ 292 + TKO500

11-29-2017, 10:57 PM	#3
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,261	Re: Fuel tank vent question I would do a vent line at least the same size as your supply line. I had to install a couple of extra ports for high and low pressure returns and a vent with a filter so that it's EFI ready. I run a rollover ball vent fitting. Attached Images __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

11-29-2017, 11:50 PM	#4
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Fuel tank vent question It's easier if your just using a carburetor system then yes use a rollover valve and tube it away. I prefer out and up with a loop or 90 in it for rollover protection. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

12-12-2017, 12:23 AM	#5
Clif Dzzzz Registered User Join Date: Oct 2013 Location: Hernando, Ms. Posts: 67	Re: Fuel tank vent question What style of Rollover Safety Valve did ya use? Was it necessary to do any metal fabrication to install the unit? Any photo's - Suppliers - Part numbers..... Thanks in advance.

12-12-2017, 07:51 AM	#6
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Fuel tank vent question Mine came with the tank but I did some mods see post #157 - http://67-72chevytrucks.com/vboard/s...=666226&page=7 __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

11-29-2017, 08:52 PM	#1
'65 chevy lover Registered User Join Date: Apr 2011 Location: Ft. Worth, Tx Posts: 536	Fuel tank vent question I recently installed an under bed fuel tank( top fill) I purchased from LMC. It has port that is supposed to be for a return line for Fuel Injection. Question is, does that need to be used as a vent for the tank, or does the tank vent thru the gas cap. Thanks P.S. I'll post up some pictures of the tank and some other stuff tomorrow.

12-15-2017, 11:27 AM	#8
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Fuel tank vent question https://www.summitracing.com/parts/tnk-vv/overview/ __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

12-16-2017, 10:55 PM	#9
AcampoDave Registered User Join Date: Feb 2013 Location: central California Posts: 2,726	Re: Fuel tank vent question http://www.tanksinc.com/index.cfm/pa...prod/prd98.htm I put this in there. Attached Images

12-17-2017, 12:48 AM	#11
Clif Dzzzz Registered User Join Date: Oct 2013 Location: Hernando, Ms. Posts: 67	Re: Fuel tank vent question Thanks for the info and location Idea.....



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