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03-23-2018
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#1 |
 Join Date: Jul 2005
Location: Jupiter, Fl.
Posts: 815
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Lingenfelter Fuel Pump
Lingenfelter offers a replacement TI Walbro fuel pump system for the LT5, shown here:
www.lingenfelter.com/product/L710030390.html Have any of you guys used this particular one? The price, less than $200, seems reasonable for the whole rig, plug and play. Any opinions on this brand? TIA, Bob.
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"It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft. |
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03-23-2018
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#2 | |
 
Join Date: Aug 2012
Location: Ellicott City, MD
Posts: 1,714
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Re: Lingenfelter Fuel Pump
Quote:
You only get the two fuel pumps with the socks for $200. You can get replacement fuel pumps with the socks for about $25 each from RockAuto.
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Charlie __________ Dredgeguy WAZOO Member 1992 Bright Red/Black ZR1 #246 Dana 4:10 gears Polished LT5 by Haibeck Polished Fikse FM5's with Michelin Pilot Sport 2 Stainless Works headers and cats with Corsa |
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03-24-2018
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#3 | |
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Join Date: Jul 2005
Location: Jupiter, Fl.
Posts: 815
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Re: Lingenfelter Fuel Pump
Quote:
On even closer reading, I noticed that Lingenfelter offers a different Walbro pump, (search #710040390), for the LT5. They claim these were used on the legendary twin turbo cars John L. built, back in the day. I'm always inclined to overkill when replacing stock parts, trying to upgrade instead of just replacing with "factory stock". This sometimes gets me in trouble, but I'm wondering if these high capacity pumps would provide ANY improvement in maintaining reliable, full fuel pressure on a stock LT5? I think I know what the answer is going to be, but has anyone tried these high capacity versions on a stock LT5?... Results? |
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04-08-2018
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#4 | |
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Join Date: Jul 2005
Location: Jupiter, Fl.
Posts: 815
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Re: Lingenfelter Fuel Pump
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Note: Although the car started and ran when those old pumps were running with low pressure, it did not crap out completely. So this led me to believe that it might not be the pumps. (this problem crept up on me, getting worse over time   )But installing two fresh pumps cured another problem that I've had for years, long cranking at start up. The starter always worked for 5-10 seconds before the engine fired. With the new pumps in there, it fires up immediately when you turn the key. So, if any of you guys have an LT5 that takes a long time to spark up, even though it "seems to run ok", check the fuel pressure, a feeble fuel pump may be the cause. BTW, thanks for all the advice, this is a great forum. 
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04-23-2018
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#5 |
 Join Date: Jan 2004
Location: Alex VA
Posts: 1,087
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Re: Lingenfelter Fuel Pump
Hey folks,
great topic. From what Graham told me the stock pumps are "enough" to feed 700 HP. I just got a code 55 up top and decided it's time to check fuel pressure and replace the pumps and fuel socks. after seeing the delco pump were 32 each with socks and little "kit" with clamps and stuff, I said, what the hey, time to swap em out. I did spring for a K&L fuel filter though :> The walbro 340 is a "big pump" and it seems like just doing the secondary pump might make sense? the little old 390 LSV has some "room" left at 619 hp, but going overkill on the secondary side of the fuel system makes some sense to me as we've always had a hard time "giving this car enough" fuel to make power up top. we'll see what she does after a couple of fresh stockers go in. I have 105k miles and 23years on these pumps and socks so I think it's time. I'm sure the pumps get weaker over time. nothing lasts forever except the LT5
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95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP) |
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03-23-2018
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#6 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 815
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Re: Lingenfelter Fuel Pump
They are walbro GSS340's if my memory serves. I use them. no problems.
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Todd ____________________________________ *** our email address has changed! info@pepmeierengines.com pepmeierengines.com Friend us on Facebook too: www.facebook.com/profile.php?id=100011443683384 Pepmeier Engine Development |
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03-23-2018
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#7 |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,723
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Re: Lingenfelter Fuel Pump
Quantity in stock says "0".
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03-23-2018
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#8 | |
Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,394
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Re: Lingenfelter Fuel Pump
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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03-23-2018
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#9 |
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Lingenfelter Fuel Pump
Todd,
Do the Walbro GSS340 pumps fit in place of the OEM pumps without any modifications? Sent from my iPhone using ZR-1 Net Registry
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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03-24-2018
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#10 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 815
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Re: Lingenfelter Fuel Pump
They are fatter. I had to split the plastic housing to expand it slightly.
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Todd ____________________________________ *** our email address has changed! info@pepmeierengines.com pepmeierengines.com Friend us on Facebook too: www.facebook.com/profile.php?id=100011443683384 Pepmeier Engine Development |
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