Mounted the factory fuel pump

75slant6 said

Ok if I run the camaro pump in my tank with a carbed 5.9 I'll need a regulator up by the engine and a return line correct? And what if I run a 5.9 with stock MPFI with the return less fuel rails, will I need a regulator and return line there as well? I've been lookin up different stuff and the camaro pumps are regulated at 58 psi and the 5.9s are regulated at around 50 psi. I'm guessing I'll need a regulator for either setup correct? Or just install that magnum pump instead of the LS1 pump...

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Yeah, if you're going carb, you'll need a regulator. You might be able to put it near the tank so you don't have to run that much extra line.
On the returnless system, the regulator is actually in the pump module. So no separate regulator is needed.
With the Camaro pump being at 58 psi, that might be close enough that it would work with the Magnum injection. If not, there is a regulator/filter combo that came on Corvettes that might take care of the issue. Not sure, but they were discussing it in the new Hemi swap forum.