390 FE Fuel Injection?
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
No, no, no, and no. I got the TBI type system. It's got a 4 injector pod above the intake manifold. No modification necessary. Just squirts fuel down into the manifold. Not as efficient as a multi-port injection setup, but at 15mpg from a 390, I wont complain. Oh, the intake is a plain old Performer RPM.
No direct injection obviously.
No crank sensor. I'm using a Mallory Unilite distributor. It works fine when you curve it correctly. The Holley fuel injection computer CAN control timing, but I currently dont have it set up to. Once you get the timing curve where you want it, where's the advantage? Sure, if you're going racing every weekend you could change timing a lot easier, but since I'm not...
If you want to go with a real multi-port setup, I suggest you find an Edelbrock Streetmaster 390 intake manifold. It has the ports in line which will make it easier to run injectors.
No direct injection obviously.
No crank sensor. I'm using a Mallory Unilite distributor. It works fine when you curve it correctly. The Holley fuel injection computer CAN control timing, but I currently dont have it set up to. Once you get the timing curve where you want it, where's the advantage? Sure, if you're going racing every weekend you could change timing a lot easier, but since I'm not...
If you want to go with a real multi-port setup, I suggest you find an Edelbrock Streetmaster 390 intake manifold. It has the ports in line which will make it easier to run injectors.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
The whole setup was around $1200, IIRC. It includes everything you need, computer, wiring harness, fuel pump, the whole 27' (9 yards...). The only thing I had to buy was the fuel line. And yes, you do have a return that goes back to the tank.
Posting Guru
Joined: Jan 2000
Posts: 1,899
Likes: 1
From: Cullman Alabama
Is there a Computer with that system?
Or is it Mechanical?
If it's Mechanical, is it similar to the Bosch system used on the early 80's Volkswagons?
I'm curious about the timing pulses for the Throttle body. How do they handle that?
Also, does it start and idle smoothly?
Or is it Mechanical?
If it's Mechanical, is it similar to the Bosch system used on the early 80's Volkswagons?
I'm curious about the timing pulses for the Throttle body. How do they handle that?
Also, does it start and idle smoothly?
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Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
I am putting together a multiport system for a 390 shortly, using a Megasquirt controller, DUI HEI distributor, and a 4BBL intake with a throttle body and adaptor from an EFI 460.
Here is a site that tells how to make the fuel rails and intake injector bungs. It deals primarily with using a Subaru engine in an aircraft, but the technology is the same.
http://sdsefi.com/air12.html
Here is a site that tells how to make the fuel rails and intake injector bungs. It deals primarily with using a Subaru engine in an aircraft, but the technology is the same.
http://sdsefi.com/air12.html
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Senior User
Joined: Jun 2005
Posts: 421
Likes: 0
Wow Ford_Six, that look really complicated.
But let me know how the MegaSquirt works. I'm looking at MegaJolt for my switch to direct ignition. I really like the idea they are pursuing with public access engineering for fuel injectin.
But let me know how the MegaSquirt works. I'm looking at MegaJolt for my switch to direct ignition. I really like the idea they are pursuing with public access engineering for fuel injectin.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
The system I'm using has a computer. I can program it using my laptop. I have complete control over all fuel (and spark if I were utilizing that function) controls. It is Holley's design. See here. Startup is great, turn the key and it's going. No chokes, no pumping the accelerator pump, no cold start worries. It's great. When set properly, it idles nice and smooth. You can still "hear" the cam I've got in it, though. 
The streetmaster was meant to be a lower-end single plane intake, for usage on the street. It is no longer manufactured, but is readily available from a number of sources. The Victor is a large single plane intake designed for one thing: High end power.
The streetmaster was meant to be a lower-end single plane intake, for usage on the street. It is no longer manufactured, but is readily available from a number of sources. The Victor is a large single plane intake designed for one thing: High end power.