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Old 08-05-2014   #11
Hog
 
Join Date: Jul 2010
Location: Woodstock, Ontario, Canada
Posts: 1,275
Default Re: LT5 fuel pump?

Quote:
Originally Posted by cvette98pacecar View Post
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.
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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
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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?
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Paul

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