LT5 fuel pump?

[Hog]

Originally Posted by cvette98pacecar

What is the flow rate on a stock pump. I was looking at some aftermarket pumps last night that flow up to 350 Lph.

I cant find the data right now on the Vortec pumps and I cant accurately remember. When I find it I'll post back.

The least expensive pump(Edit least expensive high flow aftermarket pump) that I have found is this Racetronix pump for $100. Ive got a few American friends that use these.

Picture



Specs here.
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
FEATURES:

Flows 340 Liter/Hr (90 US GPH) @ 43 PSI @ 13.5V *
In-tank use only / submersible design
Reliable and quiet turbine impeller
Can be used with EFI or carbureted applications
May be used in pulse modulated systems (PWM)
Center-inlet design. Same fitment as Walbro GSS340M, GSS307M and GSS294M pumps.
Each pump individually tested
For gasoline (use with E85 will reduce life expectancy)
Integral check-valve
Over-pressure safety bypass valve

MECHANICAL SPECS:

Weight: 355 grams / 0.783 lbs
Diameter: 38mm / 1.54" O.D.
Body: Black-plated steel with laser etching
Inlet: 22mm / 0.866" OD (non-tapered)
Outlet: 8mm / 0.315" (with barb)
PRV Activation: 90PSI nominal
Impeller design: Single-scroll hard-anodized aluminum turbine

ELECTRICAL SPECS:

Recommended operating voltage: 13.5 volts DC
Minimum operating voltage: 6 volts DC
Max operating voltage: 18 volts DC
Current draw @ 43.5PSI: 12 amps (13.5VDC)
Current draw @ 58.0PSI: 14 amps (13.5VDC)
Current draw @ 80.0PSI: 17 amps (13.5VDC)

NOTES:
REQUIRES UPGRADED IN-TANK AND EXTERNAL WIRING FOR PROPER OPERATION.

THIS PUMP IS SOLD WITHOUT ANY WIRING, FILTERS OR MOUNTS. SELECT THE PARTS YOU REQUIRE IN OUR WEB STORE BASED ON YOUR APPLICATION
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxx


340 lph at 43.5 psi, not bad for $100, so slightly less for the ZR-1's working fuel pressure of 50.75 psi(350kpa), which will read lower with the engine running as the FPR is vacuum referenced.. I just wonder at what point the stock lines and/or FPR's will become overworked.

Anyone have a flow rate for the primary and secondary pumps of the ZR-1?