Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Inline fuel pumps

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Old May 10, 2009 | 01:28 PM
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sandking's Avatar
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Default Inline fuel pumps

Just curious what inline pumps most of you are using on your conversions. My last conversion I used the Aeromotive A1000 pump, but this time I think that pump is way overkill for a 5.3 with a cam only truck engine. What are some of the fuel set ups you guys are using?
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Old May 10, 2009 | 02:23 PM
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I put a Mallory Comp 250 on mine and it makes so damn much noise that I will probably change it. I can't stand this damn thing.
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Old May 10, 2009 | 02:30 PM
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Well, dont use the A1000 pump if you dont like the noise How are the Holley pumps?
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Old May 10, 2009 | 02:47 PM
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Ill be ordering a walbro 255 for mine with a corvette filter and regulator. Pump is about $120, filter and regulator is like $40. Im running 3/8" hard line with a 5/16" return line and i'll be using all brass compression fittings.
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Old May 10, 2009 | 02:54 PM
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I took the intank pump out and I'm using a Holley Black electric pump. I've also got two Holley regulators; one for the motor side and one for the nitrous side.

The Holley Black is noisy too
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Old May 10, 2009 | 02:56 PM
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Are are you running a carb setup? I ran a holley red 97GPH all last summer with my setup. No issues and my engine was around 500hp.
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Old May 10, 2009 | 04:18 PM
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So whats the quietest in-line pump out there?
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Old May 10, 2009 | 05:18 PM
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Yeah I've got a carb setup
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Old May 10, 2009 | 06:37 PM
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I have a Weldon that I used on my injected motor. It's real quite and after some research, I find that it can also be used for a carbed engine. It can be regulated down to the correct pressure. I will be switching to it shortly. If you watch the video I posted, you can hear the Mallory pump come on just before the car starts.
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Old May 10, 2009 | 09:34 PM
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Originally Posted by LS1MCSS
I have a Weldon that I used on my injected motor. It's real quite and after some research, I find that it can also be used for a carbed engine. It can be regulated down to the correct pressure. I will be switching to it shortly. If you watch the video I posted, you can hear the Mallory pump come on just before the car starts.
I'm using a Bosch 044 pump. It will support a lot of power and is relatively quiet. The threads on it are straight metric so finding fittings is kind of a pain.
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Old Jul 26, 2009 | 07:53 PM
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Kinda back from the dead, but....

I'm gonna be running a ls1 with a ms4 on a 150 shot.
You guys think a inline walbro 255 will be enough?
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Old Jul 27, 2009 | 12:19 PM
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anyone???
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