[toofastforyou]

A while ago, I bought a Holley Sniper throttle body and I'd like to know if there are fuel pumps which will fit inside a stock 1971 tank ❓I'm asking this because I have a polished stainless steel stock replica tank on which I spent some money to make it show-worthy and I'd like to be able to keep it...
Thank you,
Claude.

 

[Kirk's67SS]

I was looking at one of these for my Original Gas Tank
Holley 12-302: OEM-Style EFI Fuel Tank Module | JEGS
but then I found out there were 4 Holes in the Top of the Tank
so i bought this
Holley 19-105: Sniper EFI Fuel Tank System | JEGS
and put in New Braided Supply and Return Line plus Fuel Regulator

 

[toofastforyou]

Thank you Kirk, but I forgot to mention that I need for a '71... My bad... The links you posted are for a '67 style tank but thanks anyways.

 

[Kirk's67SS]

Thank you Kirk, but I forgot to mention that I need for a '71... My bad... The links you posted are for a '67 style tank but thanks anyways.

LOL Holley 12-303: OEM-Style EFI Fuel Tank Module | JEGS

 

[Malibu70]

Yes the Applications section says the Holley 12-303 in-tank EFI pump and fuel level sender will fit 1968-1972 stock fuel tanks. This summer I installed this 12-303 pump in my 1970 and found it fits perfectly in the factory sender hole without modification. Note that the pump is output only with no return line, meaning one fuel line from tank to throttle body. The EFI unit regulated return output will need to be capped with a part like AT581406ERL.

 

[2/75NastyNewbs]

Agree with Kirk.

 

[69SS454]

IMHO, I would use a return line system.

 

[toofastforyou]

Thanks guys for your replies. One thing I find confusing is that everyone agrees that a system with a return line is the best way to go but the Holley part number 12-303 does not seem to have any provision for one...
I wonder if I could use one of the vent tubes located at each top corner of the tank as a return line?

Claude.

 

[69SS454]

You would be compromising the vent system.

 

[Malibu70]

Having this 12-303 pump and Sniper EFI in my 1970, with miles on it, I would say the return line is not necessary. The in-tank fuel pump has a regulator that dumps excess pressure (above 60 psi) inside the tank. The fuel in the tank remains cool. A return-style system would warm the fuel by proximity to the hot engine, then return warm fuel to the tank and cause more smelly vapors thru the tank vent after shutting down. My carbureted system had the return line and it contributed to fuel temperature and pressure build-up in the tank, while the returnless EFI system causes no pressure or temp gain. Just my observation using the returnless Holley system.