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L83 LP fuel pump upgrade

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Old 10-20-2018, 05:41 AM
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Default L83 LP fuel pump upgrade

Whippled 5.3 in a 2016 Silverado with supporting mods including LT4 injectors and HPFP. Stock LP. 572rwhp on E10. Next weekend I知 trying different alcohol levels maybe up to around E30 logging data at the track. Plan to increase until seeing LP fuel or a/f limitations.
Disclaimer-I知 easily frustrated by search functions and have only given it a half hearted attempt.

What痴 the capacity of the stock pump? I read about a Caprice PPV pump, Thats the current model and is a good option, I reckon? Any idea on the capacity increase with that pump?
Old 12-27-2018, 12:16 PM
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Little different question, does anyone have information on mounting configuration for an LT4 lpfp? I知 wondering if I can graft one onto the long truck L83 mounting supports. If somebody had an old LT4 DI in tank pump I would be willing to buy it. Does not need to work.
Old 09-11-2019, 05:33 AM
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Default Did you get anywhere

I currently have a 5.3 2015 yukon with a tsp stage 1 cam,long tube and a edelbrock supercharger. I only installed lt4 hpfp and was able to run e30. Would like to get it to e85 was wondering if you ever got anywhere with your lpfp.
Old 09-11-2019, 10:19 AM
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Have you considered a JMS voltage booster?
Old 09-11-2019, 05:17 PM
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Originally Posted by kinglt-1
Have you considered a JMS voltage booster?
I have not how is that going to effect the pumps life span. This is my daily so I want to make sure it is reliable and not gonna be replacing pumps every 12 months
Old 03-16-2024, 01:30 PM
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Originally Posted by Tim Bridges
I currently have a 5.3 2015 yukon with a tsp stage 1 cam,long tube and a edelbrock supercharger. I only installed lt4 hpfp and was able to run e30. Would like to get it to e85 was wondering if you ever got anywhere with your lpfp.
Did you have any issues with clearance using the LT4 el pump? I have a 2017 Sierra 5.3 with an edelbrock supercharger. I'm upgrading what I can to get more power. LT4 hpfp is one of my options. But was told it might not fit. Don't want to buy a pump and have it not fit without mods.
Thanks



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