Looking for fuel pump suggestions

[Klassen]

I'm currently doing a frame up build on a 96 rcsb and I'm the point where I need to start figuring out the fuel system. I have a LQ4 that will be getting a single turbo setup and I'm aiming for 650whp. Should I get a fuel cell and run an external pump or use a stock tank with an intank pump? I don't know of any in tank pumps that would work for my goal though. What would you guys run for this setup?

 

[df2x4]

Aeromotive makes a complete hanger assembly for the stock tanks in these trucks now with 200LPH and 340LPH pump options.

https://aeromotiveinc.com/product/fuel-pump-hanger-88-99-c-k-1500-2500-chevy-truck/

 

[Awest623]

I've had success with putting an AEM 340lph e85 pump into the stock hanger. Same size as the original pump, same electrical connect, just swapped right in.

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[Klassen]

From the research I've done I thought 340lph wouldn't cut it for 650whp forced induction

 

[Klassen]

Any other suggestions?

 

[tlenzi]

I have a single walbro 450 in the tank of my 88 K1500 and it's about tapped out on E85 at 14psi. I'd guess around 550rwhp. I'd suggest something like a 340 or 450 in the tank and run a separate surge tank with twin pumps in said tank. Hyperfuel G-Surge makes a twin pump version that's cost effective. On anything less than 1/2 tank I get fuel starvation issues when 4x4 launching the thing and 1/3 or less has issues in 2wd once boost comes on.

 

[alignman88]

Direct from Aeromotive web site here is 340 pump horsepower support capabilities.

Fuel Pump & Hanger, 1988-1997 V-8 1500 / 2500 GM Pickup Truck

Fuel Pump & Hanger, 88-97 V-8 1500 / 2500 GM Pickup Truck340 LPH P/N 18379 Fuel Injected Engines: Gasoline: up to 850 HP – naturally aspirated. Gasoline: up to 700 HP – forced air induction. E85: up to 595 HP – naturally aspirated. E85: up to 490 HP – forced air induction. Carbureted Engines...

aeromotiveinc.com

340 LPH​

• Fuel Injected Engines:
  • Gasoline: up to 850 HP – naturally aspirated.
  • Gasoline: up to 700 HP – forced air induction.
  • E85: up to 595 HP – naturally aspirated.
  • E85: up to 490 HP – forced air induction.
• Carbureted Engines:
  • Gasoline: up to 1000 HP – naturally aspirated.
  • Gasoline: up to 850 HP – forced air induction.
  • E85: up to 700 HP – naturally aspirated.
  • E85: up to 595 HP – forced air induction

Some how I ended up with two of the PN 18379 Phantom in tank pump/hangar/sending unit 340 lbph and have one still new in box for sale if it will work for you. Need to sell but not enough posts here to do it. I would take $300 plus shipping for it still in the Amazon outer box. Think you’ll need a couple of -6 AN adapter fittings for it as well for stock lines to pump connect. I’m in St. Louis Missouri let me know if it will work for you.