Author Topic: Ls swap questions  (Read 9477 times)

Offline frotosride

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Re: Ls swap questions
« Reply #30 on: September 07, 2016, 08:16:48 PM »
I seen somewhere on here a guy using check balls in his fuel line to hook up both tanks???  Also isn there a better tank valve i could buy that will handle the 60psi?

That would be me... I got check valves either Earls of Jegs brand so I could make my own supply line with -6 fittings and Braden lines. This way the selector will send power and return to the appropriate pump and tank but bypass the selector valve/switch. I haven't installed the 6.0l yet but the hoses are mocked up and tested on the run stand without any issues just get an EFI rated filter with the right size AN fittings to match the hose you use.
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline frotosride

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Re: Ls swap questions
« Reply #31 on: September 07, 2016, 08:20:59 PM »
Oh as for higher psi selector valves... I found several for 2-300 for airplanes to select which wing they took fuel from but way too steep for me. I have about that amount in my whole LS return fuel system
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline ajdmello

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Re: Ls swap questions
« Reply #32 on: September 14, 2016, 11:02:30 AM »
Yes your right it was you! Lol so did you still use the stock valve for the return? How do you get that in to the right tank? l have to do some looking and see what it would cost to set it up like that

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Offline ajdmello

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Re: Ls swap questions
« Reply #33 on: September 14, 2016, 11:52:10 AM »

Offline ajdmello

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Re: Ls swap questions
« Reply #34 on: September 16, 2016, 07:41:16 AM »
https://m.summitracing.com/parts/izl-s9013?seid=srese1&gclid=Cj0KEQjwjem-BRC+isGJlJ-0h-MBEiQAb so from what ive found my 208 will bolt up the the 4l60e but i have to worry about the vss...would this work to send the signal to the cpu?

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Offline Irish_Alley

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Re: Ls swap questions
« Reply #35 on: September 16, 2016, 03:15:33 PM »
dont know, probably not. the vss sends a signal to the DRACs box which then turns that signal into 3 or so different signals one for the speedo one for the ecm and one for the cruise. each one is a different pulse and the dracs translate the signal from the vss
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Offline ajdmello

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Re: Ls swap questions
« Reply #36 on: September 27, 2016, 08:27:02 AM »
dont know, probably not. the vss sends a signal to the DRACs box which then turns that signal into 3 or so different signals one for the speedo one for the ecm and one for the cruise. each one is a different pulse and the dracs translate the signal from the vss

OK bummer I didn't know. Thanks

Offline frotosride

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Re: Ls swap questions
« Reply #37 on: October 31, 2016, 08:48:33 PM »
Yes your right it was you! Lol so did you still use the stock valve for the return? How do you get that in to the right tank? l have to do some looking and see what it would cost to set it up like that

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Sorry it's been a while but I got an answer for you. The way my fuel system is set up will only bypass the supply side on the transfer valve/switch. So when you flip the switch it still sends power to the same pump and still selects the return to that tank.
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline hatzie

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Re: Ls swap questions
« Reply #38 on: November 06, 2016, 08:02:41 AM »
dont know, probably not. the vss sends a signal to the DRACs box which then turns that signal into 3 or so different signals one for the speedo one for the ecm and one for the cruise. each one is a different pulse and the dracs translate the signal from the vss

DRAC is used on the TBI systems.  The VSS on the 87-91 TBI RV trucks is 2K Pulses Per Mile conditioned by the DRAC.  The stock LS VSS is 4K PPM run direct to the ECM/PCM.  You can program the ECM/PCM to accept an 8K signal... dig around on LS1tech for the threads on how it's done and read em to see if it's beyond your comfort zone before you invest in an 8K VSS.

JTR has a 4K combination VSS/driven-gear that fits in the transmission/transfer-case speedo gear hole.  It's provided with drive and driven gears specific to your axle ratio and tire size.  The combo VSS/gear unit allows you to keep your cable speedometer and drive the LS PCM too. http://www.jagsthatrun.com/Pages/SpeedSensors_Speedometer.html
« Last Edit: November 06, 2016, 08:09:07 AM by hatzie »
SVC & wiring mans --> Here http://tinyurl.com/7387BRD-SVCMAN or My Bucket @ http://tinyurl.com/SQ-SVCMAN
Parts & Illustr Books -->http://tinyurl.com/SqParts
GMSTG Textbooks-->http://tinyurl.com/STG-TEXTBK
Radio Manuals-->http://tinyurl.com/DELCORADSVC