Do you have 340 aeromotive pump part number for 2003 Chevy Silverado?

Is it direct fit?

 

i believe the only difference is the in/out location. not sure which one you would need. someone thats using it could probably give the part #.

 

I am on stock fuel pump with 60# injectors pushing 470rwhp. It drops pressure from 58 to 20 psig above 4000rpm.

I have Walbrow 255lph but my tuner is saying don't install it and better get 340.

I have adujtable FP regulator, also.

I am woundering if Walbrow 255lph and 60# injectors will be short for 500rwhp.

 

255 will get you to 500hp to the wheels. i got 505rwhp on 255 and 60# inj. pressure only dropped into the high 50's psi. ran it for a 1 1/2 yrs. w/o any problems. wouldn't push it much past that. still running same setup w/ meth now.

 

Did you install it with or without wiring kit?

 

factory wiring

 

black4.8 what do you know about the stock flex fuel pump and FPCM VS a 255.

I am shooting for reliable 500 wheel with my 2009 turbo 5.3 and know I need injectors and def pointing toward delphi 60.

Im tempted to get the injectors and see what my tuner can do with the fuel management. If i need a pump then ill get the 340.

This delphi are plug and play right?