Holly Sniper EFI issues or NOT?

Alexei · Sep 21, 2024

giantpune said:
Does the sniper have an ethanol content detector? The stoichiometric AFR for normal gas is 14.7. For gas with 10% ethanol is 14.3. With 15% ethanol, its 14.1.

I assume for 27% ethanol, you would be looking at something closer to 13.5 AFR for cruise and 12.5 under load. Does the sniper know what gas you're using? If not, it seems like it would try to run lean.

I use this 13,8 for cruise and 12,7 for full load! Works fine!!

machattack · Sep 22, 2024

Can someone tell me where to get the Tank with the pump in it? I keep striking out.
Thanks Rod

giantpune · Sep 22, 2024

machattack said:
Can someone tell me where to get the Tank with the pump in it? I keep striking out.
Thanks Rod

https://aeromotiveinc.com/products/gen-ii-stealth-fuel-tank-71-73-mustang

rcadd1ct · Sep 22, 2024

machattack said:
Can someone tell me where to get the Tank with the pump in it? I keep striking out.
Thanks Rod

Summit racing carries them.

Vegasmax1969 · Sep 23, 2024

Tanks INC. They have tanks or the easy install kits. Watch their videos on the install. Easy and works very well! Best place for sure.

machattack · Sep 23, 2024

Vegasmax1969 said:
Tanks INC. They have tanks or the easy install kits. Watch their videos on the install. Easy and works very well! Best place for sure.

Tried Tanks inc. There response below.

Hi Rod,

Sorry we do not have an EFI ready tank for the 1971 Mustang. However, you could add a pump to your car with this kit:

https://www.tanksinc.com/index.cfm/...duct_id=84/category_id=-1/mode=prod/prd84.htm

Check the video tab on this page. The video is showing adding a pump to a 73 Mustang which would be the same as yours.

Thanks,
Justin
Tanks Inc.

machattack · Sep 23, 2024

rcadd1ct said:
Summit racing carries them.

Summit part # 18169 made by aeromotive gen2 stealth tank

rvanamb · Sep 23, 2024

This is my setup I'm currently installing. Standard tank with a aeromotive fuel pump meant for a foxbody mustang 340lph, fits perfectly where the vent is supposed to be. I am using a vented gas cap for a vent. Fuel outlet on the sender will be plugged. Return will also have a 90 degree AN-6 just not installed yet. This setup is several hundred cheaper than an aeromotive tank. The last two pictures are from my scope camera inside the tank, making sure the fuel pump and return line won't interfere with the float on the sender.

1972mach1mustang · Sep 23, 2024

machattack said:
Thanks for the reply!
Im looking for reliability mostly but a bit better fuel economy or cheaper gas would be nice ( maybe vote in someone who gives a crap). LOL I get 6 mpg.
Currently I have a eldabrock performer 4v intake with a QFT carb, hooker headers, a little larger cam. Only 300 hp and 300 ft pds of torque. I drive it daily as weather permits. I restored the whole car so I show it as well.
Gears are 350 posi with a FMX tranny all are rebuilt. Engine has msd 6al electronic ignition.

I figured I was all set to install until I was told by Kennys rod shop to send it back.

I get about 11mpg with a terminator x stealth. Crisp throttle response and ABSOLUTELY no bog ever.

Cleveland Crush · Sep 23, 2024

rvanamb said:
This is my setup I'm currently installing. Standard tank with a aeromotive fuel pump meant for a foxbody mustang 340lph, fits perfectly where the vent is supposed to be. I am using a vented gas cap for a vent. Fuel outlet on the sender will be plugged. Return will also have a 90 degree AN-6 just not installed yet. This setup is several hundred cheaper than an aeromotive tank. The last two pictures are from my scope camera inside the tank, making sure the fuel pump and return line won't interfere with the float on the sender.View attachment 93402 View attachment 93403 View attachment 93404 View attachment 93405 View attachment 93406

My compliments on your fuel tank paint job.

rvanamb · Sep 23, 2024

Prices for the parts I used totaled 165 for the tank and 267 for the pump. So all in only $432 vs $824 for the aeromotive fuel tank. Not including the sender. I would rather do it this way, if you use the aeromotive they have a special sender so if it goes bad you have to buy theirs at a premium price. They dont even list it on their website so you would have to call and special order it. Bought the parts for this at summit. I rather spend the $400 difference on a quality regulator and frangola PTFE AN-6 fuel hose and couplers.

rvanamb · Sep 23, 2024

Cleveland Crush said:
My compliments on your fuel tank paint job.

Thanks but it came painted. Not bad for a Tanks Inc $164 tank I ordered from summit.

Holly Sniper EFI issues or NOT?

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