Has anyone used the aeromotive drop in pump yet?
Looking at the dual 340 pump setup.
https://aeromotiveinc.com/product/gm...tom-1999-2004/
Also what size fuel line should i run? And how much power/fuel can the stock rails on a 2003 Gmc sierra handle.
If anyone knows a good replacement fuel rail that will work on the stock intake manifold and use the truck style injector i'm open to swapping rails.

 

I haven't seen many use that exact setup yet however I've seen a few dual 340 setups in trucks/TBSS platforms. An example of what I have previously used without issue:

* Lonnie's performance in-tank twin pump setup
* Walbro 255 pumps
* Aeromotive post pump fuel filter (mesh screen)
* -8 supply line
* -8 to dual -6 Y fitting
* -6 into each rail
* ID1000 injectors
* Nasty N8 performance billet rails (many options today)
* Aeromotive regulator (P/N 13109 I believe)
* -6 return line

On pump gas (93) + meth easily supported 700ish whp.

I would either suggest Nasty N8 performance, Holley, or Aeromotive for aftermarket rails on a truck intake as I think all have an offering.

 

im not trying to hijack the thread, I think we could both benefit from this info....

I just ordered a Spike 78/75 kit with next gen VSR wheel and I’ve been told the factory flex system can handle 600whp plus IF you add meth

I have an 07 NNBS 5.3 flex fuel and I’m trying to determine what to do for my turbo setup in the way of fuel pump, injectors, fuel lines and fuel rails.

If I run a Walbro 450, do I also have to run separate fuel lines, fuel pressure regulator and fuel rails if I don’t use meth?

Ive been reading a ton on this forum, LOTS of great info for sure, however, I’m still a bit foggy on some things.

Would it be cheaper in the long run to just add meth?

All help is much appreciated!

 

I’m not really all that familiar with the flex fuel setup other than I have read or thought it was more like 500whp but that may be pure gas. There is also a difference between a 600whp dyno run and 1/4 mile run. Hell of a lot more load on an engine in 1/4.

If 600whp is “all-in” on pump + meth you are asking for trouble. One hiccup may cost you an engine. I used meth yes for an octane boost but also as an intake charge temp reduction. I also always splashed in a few gallons of 112 race fuel if we got aggressive in the timing table. This was before e85 became real popular and the go to fuel now a days.

A lot of people usually run a new -8 line and use their old supply as a return and that should support you to 600whp on pump+meth or race gas pending the correct injectors as well. I’m a big fan of ID and have used 1000’s and 1300’s.

 

This might help. I'm in the process of gathering all the necessary fittings and what not for the staged system on the bottom left. Should be fun!