LQ4 quick disconnects - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BR3W CITY · 02-25-2011, 04:22 PM

I was trying to search the FAQ on LS swaps; I could have sworn a page had fitting sizes on it. I'm trying to find the quick disconnect sizes on the fuel rail (integrated fpr) on the lq4 (2003) with the return system.

I think one is 3/8 and the other is 5/16ths but can't remember, and need to order some parts. If anyone knows what size they used, let me know. Thanks/

**Clyde65** · 02-25-2011, 05:09 PM

I thunk they were AN fittings, but I checked on performance trucks.com and ls1tech and all I find are what you already know or said.

BR3W CITY · 02-25-2011, 05:18 PM

they are def quick connects (an's would be an aftermarket rail). I took a look on ls1tech too, but its too f-body oriented for me to find lq pertinent information some times.

**Clyde65** · 02-25-2011, 06:05 PM

I used AN fittings at my rails. there is also some that have the quick disconnects and an AN fitting on the back, Jeggs and Summit sell them, I think they are from Russel.

clinebarger · 02-25-2011, 09:50 PM

Supply is 3/8", Return is 5/16". Or -6 & -5 if your going AN.

BR3W CITY · 02-27-2011, 02:15 AM

^aha thank you sir!

Nova_Cobra64 · 02-27-2011, 11:26 AM

I assume the fitting you are after is the same one that I'll be needing for my setup. If so, they can be had in a couple different colors and usually have a -6an male fitting.

For the 3/8":
Jegs 555-103101 black
Russell 640853 black
Russell 640850 blue

For 5/16":
Jegs 555-103100 black
Russell 640863 black
Russell 640860 blue

BR3W CITY · 02-27-2011, 02:32 PM

Pretty much, although the ones I was looking at were the Russel with the barbed ends. Summit has them in regular black.

02-25-2011, 04:22 PM	#1
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	LQ4 quick disconnects I was trying to search the FAQ on LS swaps; I could have sworn a page had fitting sizes on it. I'm trying to find the quick disconnect sizes on the fuel rail (integrated fpr) on the lq4 (2003) with the return system. I think one is 3/8 and the other is 5/16ths but can't remember, and need to order some parts. If anyone knows what size they used, let me know. Thanks/ __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

02-25-2011, 05:09 PM	#2
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: LQ4 quick disconnects I thunk they were AN fittings, but I checked on performance trucks.com and ls1tech and all I find are what you already know or said. __________________ 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!* Last edited by Clyde65; 02-25-2011 at 05:12 PM.

02-25-2011, 05:18 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LQ4 quick disconnects they are def quick connects (an's would be an aftermarket rail). I took a look on ls1tech too, but its too f-body oriented for me to find lq pertinent information some times. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

02-25-2011, 06:05 PM	#4
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: LQ4 quick disconnects I used AN fittings at my rails. there is also some that have the quick disconnects and an AN fitting on the back, Jeggs and Summit sell them, I think they are from Russel. __________________ 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!*

02-25-2011, 09:50 PM	#5
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: LQ4 quick disconnects Supply is 3/8", Return is 5/16". Or -6 & -5 if your going AN. Last edited by clinebarger; 02-25-2011 at 09:51 PM.

02-27-2011, 02:15 AM	#6
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LQ4 quick disconnects ^aha thank you sir! __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

02-27-2011, 11:26 AM	#7
Nova_Cobra64 Registered User Join Date: Aug 2002 Location: Melville, SK Posts: 1,144	Re: LQ4 quick disconnects I assume the fitting you are after is the same one that I'll be needing for my setup. If so, they can be had in a couple different colors and usually have a -6an male fitting. For the 3/8": Jegs 555-103101 black Russell 640853 black Russell 640850 blue For 5/16": Jegs 555-103100 black Russell 640863 black Russell 640860 blue __________________ 2004 Silverado - Beater 1969 GMC - In progress http://67-72chevytrucks.com/vboard/s...d.php?t=441683 2011 Aveo - Work commuter 2013 Crestliner Fish Hawk 1650 - The reason no work gets done on the project truck.

02-27-2011, 02:32 PM	#8
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LQ4 quick disconnects Pretty much, although the ones I was looking at were the Russel with the barbed ends. Summit has them in regular black. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD Last edited by BR3W CITY; 02-27-2011 at 02:33 PM.

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