damon0346

I will be running 93 gas and meth. i was looking at the 4103 but that bitch is high lol, can i get away with 4303?

JAX04

iTrader: (17)

the 4303 is 2000hp

Its what i ended up with, the 4303

http://www.magnafuel.com/products/efi/pumps/MP-4301.htm

LS1NOVA

iTrader: (12)

4303 would be plenty safe at that level and a great street pump.

stevieturbo

Maybe 2000hp on a low pressure carb system. Nowhere near that on an efi/turbo application

But it will do 1000 ok.

zapp109

iTrader: (13)

I got a aeromotive eliminator

Slowhawk

iTrader: (12)

I run the 4303 and dual nozzle meth. 1000rwhp is not a problem.

bad6as

iTrader: (17)

4303 on mine as well

Bob@BruteSpeed

iTrader: (16)

I had the Eliminator on my Camaro, never had a problem with it and it will support 1000 hp. We've used 4303's on cars too and had good results with them too. Bob

Black_Phantom

take a look at the Holley 12-1800

408COUPE

iTrader: (3)

4303 is the best choice.

dudeman

iTrader: (43)

4303 on e85 here.

1000whp on pump on pump gas should be a problem with this pump

stevieturbo

Huge claims, but up the pressure and they too fall way short in terms of flow.

1800hp suddenly drops to 1000hp.

dudeman

iTrader: (43)

im curious at what pressure does it start to fall off?

if the injectors are sized correctly you wouldnt need alot of pressure right?

stevieturbo

I looked at some graphs I found ages ago when I was looking at different pumps.

Same as Walbros and most brands, after 60psi flow starts to fall, after 70psi they really take a nose dive.

So a lot will depend what base pressure you start from. If you start at typical LS1 60psi, then there really isnt a lot of headroom before flow has fallen very badly with boost.

If you start at a more typical efi pressure of 45psi, then you have more headroom.

On their own site it says this "1800hp" pump....

http://www.holley.com/data/Products/...R10573rev5.pdf

at 43psi max hp is 1400 and at 60psi max hp is 1200.

At 60psi they say it flows approx 560lph, which is still pretty good, but as you can see a far cry from the initial 1800hp claim.
They dont offer any flowdata over 60psi that I can find. I also see one place say that these can draw a max of 36A. That is HUGE current.
Looks like it's a pair of 340's built into a single housing or something along those lines.

But the pump is definitely a neat solution.

I8UR4RD

iTrader: (16)

If you want an intank setup with less noise, and better fuel temps lonnies has custom built true 340 duals that I plan on using for 1000rwhp on e85. its a high quality system.

the magnafuel will certainly take care of the job and save a little money.

Blackpanther99

iTrader: (8)

Thats what I plan on running also hopefully.

allout06

iTrader: (11)

going with a 4303 setup myself. lonnies is a nice in-tank, but over priced in my opinion. How are you guys sumping your stock plastic tanks? I plan on using a "hellmann" diesel truck sump.

http://www.hellmannperformance.com/p...mann-fuel-sump

and ill probably tap the stock sending unit top and add a -8an fitting for a return.

Cam72aro

iTrader: (28)

Dual walbro 255's in the stock bucket. It cost about $200 and is the same thing as Lonnie's setup. It's cheap, reliable and it works. If you have a pump go out then its a $100 to replace it, can't beat that. I hate external pumps, noisy and they overheat easily.

damon0346

Thanks for all the help guys I'm going to order the 4303

PewterZCar

iTrader: (2)

You won't regret it. I've ran mine for 2 hours in the heat with no problems.