twin turbo 5.3 fuel system help

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Dec 14, 2014 | 04:57 PM

Portworks

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twin turbo 5.3 fuel system help

68 c10 swb with 2004 5.3 BTR springs and 218/220 560 110 cam. Twin 70/68 on 3 turbos intercooled.factory silverado intake and return style fuel system. 3/8 feed,5/16 return, silverado filter.Wanting to know which in tank fuel pump alone might support 800 HP on gas and should I need to remove the factory regulator. If so, what pump, regulator combo. Also what size/ brand injectors.
Thanks !

Dec 15, 2014 | 05:50 PM

Portworks

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Anyone !

Dec 15, 2014 | 06:08 PM

JoeNova

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The walbro 400 series is your best bet for affordable in-tank pumps for that power goal.

I would replace the regulator.

Dec 15, 2014 | 06:31 PM

Portworks

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Is the 3/8 line and stock rails sufficient. ?

Dec 15, 2014 | 08:53 PM

1969x11

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Walbro 450 and siemens deka 80's. I am running the walbro 400 and sd 80's I have seen 70% idc with the on3 78/75 at 20psi all stock lines and 03 flex fuel rail.

Dec 15, 2014 | 09:43 PM

Kmspeedie

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dont go single pump... build for over 1k whp so you dont gotta **** with it.. go dual walbro 450's and call it a day..and 8feed 6return is fine.. 3/8 on the rails is also fine but id get a better rail.. why skimp on that when theyre not to expensive

Dec 16, 2014 | 08:47 AM

Portworks

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running two pumps in tank to a Y is it best to run a hobb switch to the second pump, or a controller?

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Dec 16, 2014 | 01:13 PM

Portworks

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Thats awesome. Give me your # I would appreciate any help. Thanks

Dec 16, 2014 | 03:58 PM

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JoeNova

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Quote:

Originally Posted by Portworks

running two pumps in tank to a Y is it best to run a hobb switch to the second pump, or a controller?

With a large enough feed/return and a capable regulator you can wire them to both run all of the time. But if you have 1800 HP worth of pumps and a regulator with a single -6 return line, you might overwork the regulator if you aren't wide open.

So you need to run the second pump to a hobbs switch to come on as you go into boost. It'll likely extend pump life and regulator life.

A controller is usually for massive pumps, like guys running big methanol pumps that need a way to turn them down so its not pushing so much fuel when it isn't running wide open.

Dec 16, 2014 | 05:47 PM

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Portworks

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I understand. is there a preferred fuel rail brand that has big enough runners. Also are there fuel pressure regulators that will bolt directly to the back of the inlet rail?