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#1 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 1987 Fuel Sender Conversion for LSx Swap
The 87 sender worked n my 78 also, the old one was busted for 20 years !
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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#2 | |
Registered User
Join Date: Dec 2011
Location: visalia ca
Posts: 1,480
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
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#3 | |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
I no longer have to put gas in the truck every 100 miles The LS gets better mileage, but now I do not have a speedometer, I like the fuel gauge better!
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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#4 |
Registered User
Join Date: Dec 2011
Location: visalia ca
Posts: 1,480
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Re: 1987 Fuel Sender Conversion for LSx Swap
LOL same boat but ive been using a GPS app on my phone. thanx for the help
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#5 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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Re: 1987 Fuel Sender Conversion for LSx Swap
The Gm fuel gauges were all 0-90ohm till mid 1990s you shoud not have any problems with the fuel gauge
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#6 |
Registered User
Join Date: Jul 2012
Location: Ocala,FL
Posts: 129
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Re: 1987 Fuel Sender Conversion for LSx Swap
Bringing back an old tread! Great write up. This will help me alot. Question: You are using the corvette style filter w/ return that you can mount near the tank. I'm swapping a truck 5.3 with the return already on the truck intake.
Would I just use a regular filter that is not a return style? and run two long fuel lines from the intake? Since the truck intake has a regulator built in along with return. |
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#7 | |
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
I just ran two -6 lines from the tank up to the rails. One for supply and one for return. That set up worked with a pump upgrade to a Walbro 400 style pump and made over 515 ft lbs of torque before blowing a head gasket... ![]()
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Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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#8 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 1987 Fuel Sender Conversion for LSx Swap
this will definitely help me as well. Aggie91 did you ever find out if the purple went to the gauge and grey went to power or vise versa?
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#9 | |
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
Purple is the sender wire to the gauge.
__________________
Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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#10 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 1987 Fuel Sender Conversion for LSx Swap
Cool. Thank you! Did you cut the plug off and solder wires?
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#11 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 1987 Fuel Sender Conversion for LSx Swap
Grey to the wire going to the fuel pump relay and purple to the fuel gauge?
Sorry meant to put that in the other post... |
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#12 | |
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
For the plug, I got the matting connector and pins and put that together on the wires going back up front to the cab area.
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Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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#13 | |
Registered User
Join Date: Jul 2012
Location: Ocala,FL
Posts: 129
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
I would look for the plug so you can just plug it into the fuel pump. My friend was able to buy one through Autozone I think? |
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#14 | |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
Do you know where I could get that plug from? Brand? PN? What that plug is called? That sort of thing. Thanks |
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#15 |
Registered User
Join Date: Dec 2018
Location: Los Angeles
Posts: 53
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Re: 1987 Fuel Sender Conversion for LSx Swap
Aggie91
Great post and thank you. I will be running this exact setup Questions all answered. Everyone on this site contributes! So Thanks Again
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#16 |
Registered User
Join Date: Sep 2018
Location: Hampden, ME
Posts: 406
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Re: 1987 Fuel Sender Conversion for LSx Swap
Its a 2 pin weatherpack connector... Amazon has them. I'm also going to check my local parts stores for them.
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#17 | ||
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
Quote:
https://www.amazon.com/Delphi-Packar...905826&sr=8-36
__________________
Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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#18 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 1987 Fuel Sender Conversion for LSx Swap
Ill do that Joe. Thanks
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#19 |
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
You are more than welcome!
I will be doing this same thing again this summer on another '84. Only twist will be this one is running dual tanks, so I will need to update the selector valve and those hoses too.
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Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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#20 |
chevy truck fan
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 1,989
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Re: 1987 Fuel Sender Conversion for LSx Swap
Aggie,
have you moved forward on the duel tanks yet? I am in the beginning process of the same thing. I am interested in how you might/did go about wiring for both tanks so the tanks are not going at the same time? thanks in advance |
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#21 | |
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
for now, here is the best thread I have found on the subject: http://67-72chevytrucks.com/vboard/s...d.php?t=754061 Info on the Pollak Selector Valve: This is the selector valve: http://products.pollakaftermarket.co...n-valve/42-159 Can handle up to 65psi fuel pressure. This is the kit they offer that comes with the selector valve, a DPDT switch, the connector for the valve and a switch plate that has main & aux indications. http://products.pollakaftermarket.co...n-valve/42-300 The link has another link to a installation sheet with a great diagram for installation. the factory wiring and dash switch can be used to control the valve also. Another good thread starting on Post 129 with pictures of the valves and hoses: http://67-72chevytrucks.com/vboard/s...=516817&page=6
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Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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#22 | |
Registered User
Join Date: Apr 2013
Location: Nor-Cal
Posts: 632
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Re: 1987 Fuel Sender Conversion for LSx Swap
Quote:
I had the thought that I was going to set up each tank as its own single tank set up. I was planning rather than using the the stock type tank selector unit to just run individual set ups. Let me try to explain. Left tank to left side fuel rail and right tank to right side fuel rail. Obviously I was using aftermarket intake with billet fuel rails and a single forward mounted cross-over simply line. This way the stock style selector switch could run as kind of supposed to, left right and center, I was planning to use a burb/blazer rear tailgate window 3 position style switch. Figured if I set up each tank as its own single tank system I could run like stock, using the center switch position to run both pumps at same time in a race/strip/dyno situation. Truck was going to be twin turbo so figured a little extra fuel might come in handy. Was planning to use corvette filters and anti bleed back fittings in the lines so that when excess fuel from left tank returned to tank it couldn't over fill the right side. Might sound silly but I was 90% sure it was going to work. This is the route I intend to follow on my 75 when/if I ever get to it. Just foods for though.
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WHO_DCTC - Wifes 05 Z-71 Build - Now defunct as she decided she wants an Escalade too Cream Puff - LS'd Square - Slow going on the back burner Tripple Threat - 3 Wrecks for the price of one build thread Project Delongdium - Step-Sons Plastic Clad 2003 Avalanche - DONE and Delivered. |
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#23 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,262
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Re: 1987 Fuel Sender Conversion for LSx Swap
Custom Walbro 450 mounts for stock sending units. Searched for products and nothing..
![]() ![]() Close up ![]() Presses on with some effort and stays put. Can be rotated if needbe to accommodate offset pumps. No welding needed to install it either. You could but not needed. Clint
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#24 |
Registered User
Join Date: Mar 2010
Location: ID
Posts: 262
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Re: 1987 Fuel Sender Conversion for LSx Swap
What’s everyone doing with the vent line?
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#25 |
I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1987 Fuel Sender Conversion for LSx Swap
I just added a length of line from the sender to the top of the frame rail and used a Dorman 14689 GM Axle Transmission Tube Vent Breather 1969-2002 on the end and zip tied it to the frame rail.
__________________
Karl ![]() 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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Tags |
fuel pump, fuel system, lsx, swap |
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