Fuel pump for 1000rwhp???
Its what i ended up with, the 4303
http://www.magnafuel.com/products/efi/pumps/MP-4301.htm
Its what i ended up with, the 4303
http://www.magnafuel.com/products/efi/pumps/MP-4301.htm
But it will do 1000 ok.
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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.
the magnafuel will certainly take care of the job and save a little money.
Its what i ended up with, the 4303
http://www.magnafuel.com/products/efi/pumps/MP-4301.htm
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.





