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#51 |
Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: 1987 Fuel Sender Conversion for LSx Swap
i did a 87 sender / tank on my efi swap . did the acdelco ep381 pump for 1996 vortec 350/5.7L spec truck . it was a direct swap on the sender for the tbi pump .
for lines i did nylon like late model vehicles use . i got a dorman master builder / repair kit . i used the compression to barb for the sender and cut off the factory bulb at the end only . then ran my lines and installed my fittings and full pressure test when i was done before i set my body on and she has been great now for over 3k miles prob close to 4k miles now .
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77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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#52 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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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
__________________
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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#53 | |
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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#54 |
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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#55 |
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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#56 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
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Re: 1987 Fuel Sender Conversion for LSx Swap
I just converted my 85 this weekend.
The OEM vent is 5/16. It is now the return line. The OEM return line off the mechanical pump is 1/4. It is now the vent line. The 87 sending units use a 1/4 vent line so it's meant to be! My vent line t's both my tanks in back and goes to the charcoal cannister up front. Working great. |
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#57 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
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Re: 1987 Fuel Sender Conversion for LSx Swap
So your tank fumes just vent underneath your truck? How's that work in closed spaces?
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#58 | |
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:
It is rarely in closed spaces long enough to notice any smells... ![]()
__________________
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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#59 |
Registered User
Join Date: Jul 2020
Location: Pennsylvania
Posts: 54
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Re: 1987 Fuel Sender Conversion for LSx Swap
I just used 1987 blazer tank and fuel pump then swapped out the pump its self with a acdelco ep381 from rock auto. The sender already had threaded ends which then I had to add adapter fittings to connect to AN fittings and lines. My truck was a return style fuel system. Everything seems to work great
Last edited by Acregger; 12-22-2021 at 12:42 PM. |
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#60 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,263
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Re: 1987 Fuel Sender Conversion for LSx Swap
another option
![]() with a walbro 450 pump installed ![]() clint
__________________
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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#61 |
Registered User
![]() Join Date: Apr 2018
Location: Penngrove, CA
Posts: 697
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Re: 1987 Fuel Sender Conversion for LSx Swap
Is that cnc'd? looks awesome.
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"Sweet Pea" 1975 Cheyenne 20 http://67-72chevytrucks.com/vboard/s...00#post8477900 "Bourbon" 1975 Suburban ScottsdaleSOLD https://67-72chevytrucks.com/vboard/...49#post8769049 ”Otis” 1970 C10 SWB -SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=762766 ”Chebby” 1962 Impala LS/TKO-500 http://www.pro-touring.com/threads/1...2-Impala-Build |
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Tags |
fuel pump, fuel system, lsx, swap |
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