What is your stock fuel pressure? One of the 2003 hemi upgrades is to use either an 04/05 pump or scavenge the regulator out of one. The 04+ run 10psi higher than the 03's (48 vs 58 IIRC). Might help unless you need pressure beyond that, then the above suggestion may be the way to go.
My tunner said I'm leaning out around 4000k with my stock pump now. I bought a walbro 255 however upon removing the pump pump housing from my 2002 tank I realized I can't get the pump out of the module and it seems like a plastic ring was machined pressed into it to secure the pump. Does the 04/05 fuel pump come with the whole housing that I can just drop back into the tank or do I need to modify it?
Also ill be running 10PSI with a 4.7L. I still have stock internals in the block but everything else is aftermarket, do you think that it will be enough pump or a large enough upgrade from what the stock pump capabilities were to get the fuel I need?
And last do you have a link or part number for the pump you used!?
As long as the tanks are the same which i think they are, you probably could use an srt 10 pump. It would be direct swap, sending unit and all, and should support over a good bit over 500 horsepower. They only thing that may need changed would be the pigtail to the pump. Heres the flow from the 4.7 pump to the srt pump. Ill add the 5.7 aswell. All are for 26 gallon tank which u should have being rcsb.
4.7
Maximum Free Flow Rate (gph):
65
Maximum Pressure Range (psi):
100
Minimum Free Flow Rate (gph):
55
Minimum Pressure Range (psi):
90
Srt 10
Maximum Free Flow Rate (gph):
90
Maximum Pressure Range (psi):
115
Minimum Free Flow Rate (gph):
80
Minimum Pressure Range (psi):
105
5.7
Maximum Free Flow Rate (gph):
80
Maximum Pressure Range (psi):
115
Minimum Free Flow Rate (gph):
70
Minimum Pressure Range (psi):
95
I heard that the srt 10 pump is different from the 4.7 or hemi. I'm going to look further into it though. I actually thought about doing an entire fuel tank swap with the srt 10 tank, fuel pump and all, I just don't know if the connections would be the same.
I have, but I'm trying to keep this fuel pump thing as low $ as possible without sacrificing quality. I'm hopping the hemi pump will work since I have a 4.7 and add boost a pump if I need to.
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