> Has anyone installed the Holley Sniper EFI on a 455 yet? If so, did you use the Base kit, or the Master kit? How did you handle the fuel return
> line? Did you use it with the GM HEI dizzy?
> Any problems? Do you like it...
>
> Tnx Bruce
I am going to install the Holley Sniper EFI QuadraJet soon. Going to order it next week. I am also going to install the Holley Sniper HyperSpark
ignition system that consists of the distributor, CDI box and coil. I will not be using the master kit. I will be using the FiTech Fuel Injection
Force Fuel System. https://www.jegs.com/i/FITech-Fuel-Injection/546/50004/10002/-1 This allows me to have the fuel pump submerged in fuel (inside the
FiTech) It also has a fuel pressure regulator inside it too.
Why am I doing this? It allows me to leave the low pressure fuel line in place. The FiTech is mounted to the firewall in the engine compartment. The
high pressure fuel line is run from the FiTech to the Sniper EFI throttle body. The low pressure line that is between the fuel pump and the old
QuadraJet carb will be re-routed from the fuel pump to the FiTech. If you want to use an electric fuel pump instead of the mechanical fuel pump you
can mount it anywhere on the frame between the tank selector switch and the FiTech, and then remove the mechanical fuel pump and put on a block-off
plate. The main reason is the high pressure fuel pump will last longer submerged in 1/2 gallon of cool fuel. The FiTech also has a pressure gauge on
it.
I will run the return line from the FiTech, not the Sniper EFI throttle body. I will cap the return port on the Sniper EFI throttle body. I also don't
need to run the return line back to the tank. I will attach it on the furl filler tube that is easily accessed from the top hatch and the left wheel
well. The cost of the FiTech is $430, but I want this system to work well and that is worth the $$ to me.
I decided t goo with the HyperSpark ignition because with it I have control of the timing from the driver's seat. Also the whole system was designed
to work together seamlessly.
I've attached my EFI Parts List. It may change here and there, but the bulk of it is good to go.
> line? Did you use it with the GM HEI dizzy?
> Any problems? Do you like it...
>
> Tnx Bruce
I am going to install the Holley Sniper EFI QuadraJet soon. Going to order it next week. I am also going to install the Holley Sniper HyperSpark
ignition system that consists of the distributor, CDI box and coil. I will not be using the master kit. I will be using the FiTech Fuel Injection
Force Fuel System. https://www.jegs.com/i/FITech-Fuel-Injection/546/50004/10002/-1 This allows me to have the fuel pump submerged in fuel (inside the
FiTech) It also has a fuel pressure regulator inside it too.
Why am I doing this? It allows me to leave the low pressure fuel line in place. The FiTech is mounted to the firewall in the engine compartment. The
high pressure fuel line is run from the FiTech to the Sniper EFI throttle body. The low pressure line that is between the fuel pump and the old
QuadraJet carb will be re-routed from the fuel pump to the FiTech. If you want to use an electric fuel pump instead of the mechanical fuel pump you
can mount it anywhere on the frame between the tank selector switch and the FiTech, and then remove the mechanical fuel pump and put on a block-off
plate. The main reason is the high pressure fuel pump will last longer submerged in 1/2 gallon of cool fuel. The FiTech also has a pressure gauge on
it.
I will run the return line from the FiTech, not the Sniper EFI throttle body. I will cap the return port on the Sniper EFI throttle body. I also don't
need to run the return line back to the tank. I will attach it on the furl filler tube that is easily accessed from the top hatch and the left wheel
well. The cost of the FiTech is $430, but I want this system to work well and that is worth the $$ to me.
I decided t goo with the HyperSpark ignition because with it I have control of the timing from the driver's seat. Also the whole system was designed
to work together seamlessly.
I've attached my EFI Parts List. It may change here and there, but the bulk of it is good to go.
