I have been searching like crazy but just can't figure this out, I am doing a 408 build with L92 heads and need to figure out what the best intake is for my set up. This is going into a 2003 2500HD with the return style fuel system and truck accessory brackets. I was looking at doing a L76 intake but it looks like it might not work with the truck accessories? Also could I swap my fuel rails over to it to make it return style?

 

i put an nnbs intake on my lm7 i just swapped fuel rails and all is good i dont know about l92 heads though

 

Right, the L76 won't just bolt right on. If you want to use it though, we do have a Car Intake Conversion Kit to make it work.

 

Ok, so is there a way to adapt the return less fuel rails on the newer intakes to work with my return system? I am planning on installing a Walbro 400 to replace my stock fuel pump.

 

I would say the best way is to run a external adustable regulator. Ive read about the 400 overpowering the stock regulators too

 

Ok thanks, I think I remember reading that too. I have been researching this build so much my brain is moosh.

 

Planning on boost or spray? If not that pump is most likely over kill. The 320/340 options out there won't require the extra cost and will support around 750hp and is about $100 cheaper than 400.

 

I might do up to a 250 shot, I don't know if I will do it but I don't want to have to redo the fuel pump if I decide to.

 

Okay that's an easy scenario then. Do an AEM 320. They are $100 on SDPC and will support over 750hp. If you ever do a 250shot you will want a stand alone fuel system to supply your added fuel anyways. Now no need for an aftermarket fuel regulator save a ton on your fuel system and still prepared for the future.

 

my stealth 340 pump over powered my stock fuel pressure regulator FYI