LS swap fuel system setup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1966Stepside · 03-20-2011, 03:43 PM

In the next week or so, i'm going to begin swapping a 4.8/4l60e into my '66 Stepside. I'd like to hear from folks who have done one of these lsx swaps and moved their fuel tank to the bed. I've done quite a bit of reading on the subject, but there are a couple parts I'm not clear on.

I don't mind having the fuel pump external to the tank, but what I dont' want is to have to have a fuel filler door in the middle of the nice wooden bed I plan to eventually install. Are there any aftermarket tanks that have a side fuel filler neck, or that leave enough room between the tank and the bed to put a 90 degree bend at the neck and run the filler from the rear fender area? I've also read that the tank needs to be baffled internally, but is that for internal fuel pumps only?

I'd love to see pics if you've got em!

Photobucket is messing with me, but here's a couple of shots of my truck when I brought it home.

Thanks!

rbar · 03-20-2011, 04:01 PM

You might consider one of those set ups where the fuel filler is below the wood and one board hinges up to allow access.
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**TR65** · 03-20-2011, 06:49 PM

66,

Here is how I did mine.

http://67-72chevytrucks.com/vboard/s...d.php?t=334077

TR

1966Stepside · 03-20-2011, 07:52 PM

Quote:

Originally Posted by TR65

66,

Here is how I did mine.

http://67-72chevytrucks.com/vboard/s...d.php?t=334077

TR

I like what you did there. I was browsing summit for the RCI tank you used, but I don't see one with that filler snout coming out at a 90 degree angle like that. Is that something you fabbed up yourself?

**TR65** · 03-20-2011, 08:25 PM

66,

Thanks. This is it.

http://www.summitracing.com/parts/RC...5&autoview=sku

TR

1966Stepside · 03-20-2011, 08:34 PM

TR65,

I was really looking for the fuel cell you were using. Was that a summit part also, or did that come from somewhere else?

**Captainfab** · 03-21-2011, 01:43 AM

Another option is a fuel tank made specifically to your needs. Check out this vendor's thread....

http://67-72chevytrucks.com/vboard/s...d.php?t=362307

and this vendor also....

http://67-72chevytrucks.com/vboard/s...d.php?t=446688

**TR65** · 03-21-2011, 09:03 PM

Quote:

Originally Posted by 1966Stepside

TR65,

I was really looking for the fuel cell you were using. Was that a summit part also, or did that come from somewhere else?

66,

I used a Rick's tank like jays68yak.

They are very nice. They even put in two sending units for me, one for the computer and one for the old gas gage. The in tank pump is nicely baffled and uses a standard AC delco pump.

TR

1966Stepside · 03-23-2011, 10:42 AM

Anyone got info on non baffled tanks and external electric pumps? Hoping for some good info so i dont waste money on the wrong tank
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BR3W CITY · 03-23-2011, 12:12 PM

I don't think it has to be baffled but it would need to be sumped (pickup at point lowest to tank) so there is a constant supply of fuel to the pickup.

1966Stepside · 03-23-2011, 12:20 PM

Quote:

Originally Posted by BR3W CITY

I don't think it has to be baffled but it would need to be sumped (pickup at point lowest to tank) so there is a constant supply of fuel to the pickup.

Sweet... Thats what i figured, nice to have confirmation
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**Clyde65** · 03-23-2011, 01:35 PM

I have one of the "fuel Cells" that summit sells, 16gal, it pulls from the lowest point in the front, has no baffles and I havent had any issues so far with fuel starvation.

BR3W CITY · 03-23-2011, 04:20 PM

I also run the "fuel foam" in my tank to help with any sloshing that might occur. Works pretty well and its cheap.

1966Stepside · 03-24-2011, 01:12 PM

Thanks for the help everyone! Since i had unused gift cards to lmc, i ordered their under bed kit. I'll post pics when i get it installed.
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03-20-2011, 03:43 PM	#1
1966Stepside Registered User Join Date: Feb 2011 Location: North, AL Posts: 135	LS swap fuel system setup In the next week or so, i'm going to begin swapping a 4.8/4l60e into my '66 Stepside. I'd like to hear from folks who have done one of these lsx swaps and moved their fuel tank to the bed. I've done quite a bit of reading on the subject, but there are a couple parts I'm not clear on. I don't mind having the fuel pump external to the tank, but what I dont' want is to have to have a fuel filler door in the middle of the nice wooden bed I plan to eventually install. Are there any aftermarket tanks that have a side fuel filler neck, or that leave enough room between the tank and the bed to put a 90 degree bend at the neck and run the filler from the rear fender area? I've also read that the tank needs to be baffled internally, but is that for internal fuel pumps only? I'd love to see pics if you've got em! Photobucket is messing with me, but here's a couple of shots of my truck when I brought it home. Thanks! Last edited by 1966Stepside; 03-20-2011 at 07:53 PM.

03-20-2011, 04:01 PM	#2
rbar Registered User Join Date: Nov 2010 Location: Meridian, Idaho Posts: 422	Re: LS swap fuel system setup You might consider one of those set ups where the fuel filler is below the wood and one board hinges up to allow access. Posted via Mobile Device __________________ 1963 Chevy stepside 327 1965 Chevy swb 383 1996 Mystic Mustang Cobra 2009 Pontiac G8 GXP 415hp/415tq 6speed

03-20-2011, 06:49 PM	#3
TR65 Senior Member Join Date: Nov 2007 Location: Greenville, SC Posts: 873	Re: LS swap fuel system setup 66, Here is how I did mine. http://67-72chevytrucks.com/vboard/s...d.php?t=334077 TR __________________ 1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880

03-20-2011, 08:25 PM	#5
TR65 Senior Member Join Date: Nov 2007 Location: Greenville, SC Posts: 873	Re: LS swap fuel system setup 66, Thanks. This is it. http://www.summitracing.com/parts/RC...5&autoview=sku TR __________________ 1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880 Last edited by TR65; 03-20-2011 at 08:28 PM. Reason: link didn't work

03-20-2011, 08:34 PM	#6
1966Stepside Registered User Join Date: Feb 2011 Location: North, AL Posts: 135	Re: LS swap fuel system setup TR65, I was really looking for the fuel cell you were using. Was that a summit part also, or did that come from somewhere else? __________________ Truck Pics http://s886.photobucket.com/albums/a...ew%20Purchase/

03-21-2011, 01:43 AM	#7
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: LS swap fuel system setup Another option is a fuel tank made specifically to your needs. Check out this vendor's thread.... http://67-72chevytrucks.com/vboard/s...d.php?t=362307 and this vendor also.... http://67-72chevytrucks.com/vboard/s...d.php?t=446688 __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by truckdude239; 05-04-2013 at 10:33 AM.

03-23-2011, 10:42 AM	#9
1966Stepside Registered User Join Date: Feb 2011 Location: North, AL Posts: 135	Re: LS swap fuel system setup Anyone got info on non baffled tanks and external electric pumps? Hoping for some good info so i dont waste money on the wrong tank Posted via Mobile Device __________________ Truck Pics http://s886.photobucket.com/albums/a...ew%20Purchase/

03-23-2011, 12:12 PM	#10
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LS swap fuel system setup I don't think it has to be baffled but it would need to be sumped (pickup at point lowest to tank) so there is a constant supply of fuel to the pickup. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

03-23-2011, 01:35 PM	#12
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: LS swap fuel system setup I have one of the "fuel Cells" that summit sells, 16gal, it pulls from the lowest point in the front, has no baffles and I havent had any issues so far with fuel starvation. __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

03-23-2011, 04:20 PM	#13
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LS swap fuel system setup I also run the "fuel foam" in my tank to help with any sloshing that might occur. Works pretty well and its cheap. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

03-24-2011, 01:12 PM	#14
1966Stepside Registered User Join Date: Feb 2011 Location: North, AL Posts: 135	Re: LS swap fuel system setup Thanks for the help everyone! Since i had unused gift cards to lmc, i ordered their under bed kit. I'll post pics when i get it installed. Posted via Mobile Device __________________ Truck Pics http://s886.photobucket.com/albums/a...ew%20Purchase/



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