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Old 05-06-2023, 12:36 PM
Empty1 Empty1 is offline
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Default Electric Fuel Pump install for carbureted engine

I am reaching out to the collective advantage and wealth of experience and knowledge for guidance. I am in the process of installing a new Tanks, inc fuel system in my 74 Firebird that has an in tank electric fuel pump, routed up through an in-line filter, to a fuel regulator that will reduce the flow for a carbureted engine and will be mounted in the engine bay.
That much i pretty much understand and the rational was that i needed to replace the original pump anyway. The electric fuel pump should provide more consistent fuel to the engine and if/when i ever wanted to replace my Pontiac 400 with an LS engine, I’d be that much closer.
The questions i am wrestling with and why i am reaching out is:
1. Do i need to install a return line from the regulator back to the tank?
2. If so, how is this routed? Right next to the outbound fuel line? What kind of hose clamps do you recommend?
3. Is it necessary, or does it make sense to cut an access door into the trunk floor?
I may end up with more questions, but if i knew the answer to the return line dilemma i think i could get close.


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Old 05-06-2023, 07:29 PM
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What fuel pump are you running?
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Old 05-07-2023, 11:13 AM
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Quote:
Originally Posted by camcojb View Post
What fuel pump are you running?

From the product description: “Includes our GPA series fuel pumps 255lph with Walbro pump”


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Old 05-07-2023, 12:13 PM
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All the regulators I've used with an EFI style fuel pump and a regulator to get it down the 6-7 psi for a carb require a return line to the tank. Easiest to run it back next to the feed line from the tank.
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SPECIAL THANKS TO:
Jacob Ehlers and Amsoil for the lubricants and degreasers for my 70 Chevelle project
Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
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Old 05-08-2023, 05:43 PM
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Thank you


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Old 05-28-2023, 10:33 AM
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I didn’t cut an access in my trunk floor but wish I had.
Hose clamps? None, I run Swagelok tubing and fittings. Very nice stuff
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Old 05-31-2023, 01:18 AM
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Default Holley 12-129

You maybe too far down a path, but Holley offer this in tank pump with regulator for 6psi. If you want to move to EFI, you swap out internal regulator

https://www.holley.com/products/fuel...s/parts/12-129
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Old 06-08-2023, 07:26 PM
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I'm sure this is way late and you are already up and running but I just swapped my Holley Sniper to a carb. 351W in a 39' truck. Used the same EFI pump, changed the regulator and filter. All good.
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