Holly sniper EFI

[James Russell]

I'm thinking of pulling the carb off my stepside and install a holly sniper fuel injection system. I'm just curious about where I should mount the fuel pump? Because I have duel tanks and have a selector valve to deal with. I'd like to know what you guys have done.

 

[Frankenchevy]

With dual tanks, the most simple is a sump system. Especially in Alberta, where engine bay temps shouldn’t be too much of an issue.

 

[SquareRoot]

Spend some time perusing the Sniper forum on Holleys website. I learned the hard way.

 

[James Russell]

I've been reading and they recommended installing the fuel pump close to the tank. If I do this id have to install it after the fuel tank selector valve. I have a feeling that's to far to pull fuel. And if I go with the expensive intank pumps, I'm not sure that the selector valve will handle that kinda pressure. I'm just curious about what guys are doing.

 

[Marcoman]

I've been reading and they recommended installing the fuel pump close to the tank. If I do this id have to install it after the fuel tank selector valve. I have a feeling that's to far to pull fuel. And if I go with the expensive intank pumps, I'm not sure that the selector valve will handle that kinda pressure. I'm just curious about what guys are doing.

So did you ever install that Sniper system or another EFI setup?

 

[AKguy]

I have Walbro external pumps, one for the main and aux, wired to the selector switch. One mounted to the crossmember and the other inside the passenger side frame rail. Worked with the guys at EFI Pros.

 

[Greasemonkey 85]

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I just finished up installing the Sniper in my 85 Silverado with a 454 BB and dual tanks.
Installed the pump and filters right after the selector valve and have had no problems with it so far. I did replace the transfer switch last year and I'm thinking they gave me the updated switch for a factory EFI which has better flow.
I thought it would be starving for fuel but I ran it through the gears on both tanks and it worked fine. Granted, I only have a few miles on it being that there is still snow up here and I'm not going to run it on the sloppy roads
I also used as much of the factory 3/8 steel gas line as I could.
Even used the 1/4 factory return line.

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