01-18-2018, 09:34 PM | #15 |
Drives: 17 SS a8 Join Date: Feb 2010
Location: omaha
Posts: 1,678
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I just got my cam with the 32% larger fuel pump lobe. It came with a lash cap. The label on the lash cap says only use with an lt1 pump. Do not use with an lt4 pump.
What am I missing here? Edit: found this. It helps explain things. https://www.corvetteforum.com/forums...learances.html
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dropped a valve in the 6.2. now running a drop in rods and piston 5.3
best et 5.83@121 with the 5.3 http://www.camaro6.com/forums/showthread.php?t=465472 Last edited by parish8; 01-18-2018 at 10:28 PM. |
01-21-2018, 04:11 PM | #16 | |
Drives: ZL1 ATS-V CTS-V C7Z Range Sport SC Join Date: Mar 2016
Location: Cincinnati, OH
Posts: 580
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Quote:
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01-21-2018, 05:09 PM | #17 |
Drives: 17 SS a8 Join Date: Feb 2010
Location: omaha
Posts: 1,678
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The instructions in that thread show how to check for some preload and how to make sure the pump isn’t bottoming out.
On the bottoming out part it says get the lifter to the highest position. Remove the large spring from the pump. Remove the gasket. Carefully install the pump wrenching it down slowly and stopping if you feel it bottom out. If you are able To get the pump all the way on then it should be safe and not bottom especially with the added gasket. Do you agree with that method? Simple enough unless there is more too it.
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dropped a valve in the 6.2. now running a drop in rods and piston 5.3
best et 5.83@121 with the 5.3 http://www.camaro6.com/forums/showthread.php?t=465472 |
01-23-2018, 06:40 PM | #18 |
Drives: ZL1 ATS-V CTS-V C7Z Range Sport SC Join Date: Mar 2016
Location: Cincinnati, OH
Posts: 580
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WEAPON-X SPI Kit: Secondary Port Injection
Without further ado... the complete fuel solution for nearly ALL LT powered cars! Tank to injector tip, lines, regulator, fittings, injector, harness, control module, and tuning software!
http://www.camaro6.com/forums/showth...1#post10052911 |
11-25-2018, 06:04 PM | #19 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,800
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Might want to update this. LPE big bore version 2 works with bigger fuel lobes.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
11-25-2018, 07:23 PM | #20 |
Drives: ZL1 ATS-V CTS-V C7Z Range Sport SC Join Date: Mar 2016
Location: Cincinnati, OH
Posts: 580
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03-20-2022, 08:39 PM | #21 |
That guy
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Has this changed much in the years since it was posted? It's all very helpful, I just want to make sure that it is still relevant to the application.
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James Montigny
2017 Camaro 2SS A8 - Krypton Green Magnuson 2650, TSP Head/Cam, DSX Low Side, Flex Fuel, LT4 HPFP, 103mm TB, Big Gulp. |
03-21-2022, 12:00 AM | #22 | |
Drives: 2018 Camaro SS 1LE M6 Join Date: Oct 2018
Location: Northern California
Posts: 345
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Quote:
With the current mods in my sig, at what point should I be looking to upgrade my low side? Looking at heads and cam build this winter.
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Camaro 2SS 1LE, MBRP Catback, Mishimoto Catch Can, Rotofab dry, TSP1 7/8” headers,DSX FF, Pray ported MSD, 95mm TB
492WHP 473WTQ |
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03-21-2022, 01:55 AM | #23 |
Drives: 2016 Camaro 2SS Join Date: Apr 2018
Location: Central Texas
Posts: 1,011
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03-21-2022, 07:25 AM | #24 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,800
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Depending on the level of heads/cam on E85 you might need LT4 fueling.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
04-22-2022, 09:55 PM | #25 |
Drives: 2018 Camaro 1SS 1LE Join Date: Jun 2018
Location: Flower Mound, Texas
Posts: 66
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On the topic of fueling, has anyone ran into issues with the LT4 HPFP pump and NA setups? Talking to my tuner, they stated twice they ran into issues where the LT4 HPFP provided too much fuel for the Fuel Bypass Solenoid to keep up and results in pressure going higher than demanded and can cause the injectors to lock up. This is for NA setups running a the larger fuel lobes.
Both times he stared the solution was switching back to the LT1 HPFP.
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Tags |
e85, fuel pump, fueling, injectors, port injection |
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