That is correct. They are advertised as a 255lph module. With flow losses though the forever filter & bucket filling jet, result is a 500HP capable module which as an industry standard is typically evidenced by 255lph flow capability.

Pumps that are advertised as 255lph are called that because they flow that amount at a specified pressure. Once installed in a module/system the actual output @ that pressure is less than 255lph.

The pump used in that module is a F90000267 which translates to what is commonly called a "Walbro 450"

 

I don't suggest running a 450 on stock wiring. Those are some horrible losses through a filter. Yes a 267 is a 450, I have a couple.

Just swapping a pump is extremely easy if your module is in good shape. If the hat is rusted or something then that's different I would replace it.

Also the bucket filling jet or Venturi relies on post regulator fuel, meaning at high fuel demand it does basically nothing as it only uses fuel the regulator by passes.

 

This may be true for the stock module but not for these units.

 

What is the amp draw at 58psi?

 

12v 58psi - 15.96 Amps
13.5V 58psi - 17.24 Amps

 

Got the fuel pump delivered today, nice looking unit! Was 340 from Jegs. Thank you for all the help/recommendation.

 

very good!

Looks like Jegs has the wrong picture though.

 

Look up edlbrocks supplemental fuel pump kit its a flex fuel pump in a regular bucket

 

so this would be a drop in unit that could use the factory fpr? what kinda whp would this support without going return style?

 

The factory FPR is part of the fuel pump module.

The unit offered by Holley is a complete drop in with an in tank regulator built into it just like the O.E. module with the set point at 58psi.

They are rated for 500hp, that is what they can support while maintaining bucket fill.