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Hey guys,

Looking for some ideas on what parts to use and plumb a fuel system for a 500hp street car that may see odd doses of nitrous (150 shot most) in the future. One pump for both fuel and nitrous, car gets street driven alot. Don't want to spend 500 bucks on just a pump. What will work on a budget? What size line? Dead head or return style regulator?

Was thinking a mallory 140gph with return style reg and 1/2" or 3/8" hard line, but not sure...Also not sure what size line i should go with, how many filters, etc....if there is anything else I am missing?

thanks!
 

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Aeromotive. I have run an A1000 on the street for years with no problems. I don't run NOS but I have run both fuel injected and carburated with the same pump on a 500 ish hp SBC. I'm no expert but I would think you would need @ least -8 (1/2") fuel line to supply adequate fuel.
 

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workin it
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An A2000 is a good pump...run the bypass right off the pump, back into the cell. My pontiac probably puts out 350 on the motor and I spray 425ish on top of that with no problems at all....scratch that, I bought mine like 9 years ago and it was alot cheaper than now...lol, sorry
 

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Discussion Starter #4
hey guys, the aeromotive stuff is just way too expensive for me, especially right now...
I know people will say "buy it once and do it right" but in my opinion those pumps are overkill for even most of the cars using them...I know I can use something less and have no troubles, problem is what other pumps and systems would work? and whether or not i should dead head or run a return line
 

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I would think you'd be pushing it with that Mallory pump. I know you say Aeromotive is too expensive, but isn't a new motor more if you burn it up? I run an A1000 in my Jeep, and that see's a lot of street use. I run a single A1000 to feed my 427SBC and a plate kit that's jetted at 200. I have never had any fuel issues whatsoever, and the pump runs pretty damn cool on hot days street driving.
 

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Had good luck out of the hp150 holley pump.Got a couple around here that has 500-600 hp on them and no problems.Even when using a 150 shot.Running #8 line all the way.
 

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Discussion Starter #8
do you guys think I should be dead heading the system or running a return line? This car sees alot of street miles, so i need something that will work and not burn up idling on the street
 

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Tire Waster
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Hey guys,

Looking for some ideas on what parts to use and plumb a fuel system for a 500hp street car that may see odd doses of nitrous (150 shot most) in the future. One pump for both fuel and nitrous, car gets street driven alot. Don't want to spend 500 bucks on just a pump. What will work on a budget? What size line? Dead head or return style regulator?

Was thinking a mallory 140gph with return style reg and 1/2" or 3/8" hard line, but not sure...Also not sure what size line i should go with, how many filters, etc....if there is anything else I am missing?

thanks!
Nothing at all wrong with your idea. I ran the COMP 140 with 1/2 aluminum line on my '71 BB Duster and it worked fine. Fuel pressure gauge needle never wiggled.
 

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The Grouch
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I ran a Malory 250 on the streets for quite a few years with nos and the car. I worked vary good, Never had to adjust the fuel pressure. It is a good price for that pump, But i now run Magna Fuel. Track only car.
 

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Magnafuel 275 or 300 would work great.
 

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Discussion Starter #13
for a street car guys, is it more desirable to run a return line? or will a dead head system be okay?
 

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for a street car guys, is it more desirable to run a return line? or will a dead head system be okay?
Return system if it sees a lot of street driving.
 

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Will the pump bypass be enough for a return or should you return from the regulator in the engine compartment?
 
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