Quick Question - Hi-Po EFI System

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POWER BY FORD
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slashfan7964
Does anyone know if any brand makes high-performance EFI systems for Ford FE 390 V8's? Can't seem to find anything. Been talking about swapping that or an SVO 460 into our truck when we really start to build her up again and we wanted to go the EFI route over carb as the last 3 engines were carbureted. Just curious. Holley would be prefered but I don't think thy make them, if anyone makes them. If we can't find one I think we'll go SVO 460 but this is just an option floating around right now. I know FE engines aren't really hiigh up into aftermarket like the Windsors we've ran before so I'm curious. Trying something different I guess.

The engine we have no only has 50,000 miles on it since it was rebuilt but it's tired now as it's sat for years only occasionally running and plowing snow. Hes been talking about building it frame up again for a third time so this was something we've been discussing.

Thanks for any help.
 
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Plenty of TBI style EFI conversions on the market in a 4150 flange that don't require an intake manifold with injector bungs.

FAST XFI (COMP Group)
ACCEL DFI (Holley Group)
Professional Products (China copy everything group...)
 
Nicksfix
If you have 4K laying around in your pocket, it can be done.

Summit Racing Products offers these kits.

Which reminds me, I have to get up there and get headers and a dual exhaust kit for Mama's Hemi powered truck.
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Jesus I was afraid it would cost around that. Didn't see anything on Summit last time I searched but that was a while ago, thanks.

@Malicious

I think he wanted to go throttle body EFI.
 
MaliciousMD
Plenty of TBI style EFI conversions on the market in a 4150 flange that don't require an intake manifold with injector bungs.

FAST XFI (COMP Group)
ACCEL DFI (Holley Group)
Professional Products (China copy everything group...)
Click to expand...
This.
The fast efi kits arent bad at all if you want to go tbi, its probably your best bet unless you have some serious coin to drop.
Why not a carb anyway? Honestly the tbi systems aren't too much better than a properly tuned carb IMO.
 
I would say not even as good as a properly tuned carb. TBI throttle response is pretty poor from my experience. I'm not sure if you can get a 'four pack' of webers for a 390, but if you can, you can nearly as easily run 8 throttle bodies. It will look cool and make tons of power, but it won't be cheap.
 
savage388
This.
The fast efi kits arent bad at all if you want to go tbi, its probably your best bet unless you have some serious coin to drop.
Why not a carb anyway? Honestly the tbi systems aren't too much better than a properly tuned carb IMO.
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Basically his reasoning is after tuning them for 30 years he doesn't want to anymore. Being lazy basically.
Eunos_Cosmo
I would say not even as good as a properly tuned carb. TBI throttle response is pretty poor from my experience. I'm not sure if you can get a 'four pack' of webers for a 390, but if you can, you can nearly as easily run 8 throttle bodies. It will look cool and make tons of power, but it won't be cheap.
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Room under the hood wouldn't be a problem either so yes while 8 would be cool it would be expensive. Not like many people are going to be looking under the hood anyways, at least right now.

I've never really worked on TBI systems apart from mid '90s Chevy 350s and from what I saw throttle response wasn't the greatest and I think that would probably carry over.

I do have 2 extra Holley carbs sitting in the garage that we've been trying to get rid of after running them (625 and 650) so if we have to we can run those.
 
Eunos_Cosmo
I would say not even as good as a properly tuned carb. TBI throttle response is pretty poor from my experience. I'm not sure if you can get a 'four pack' of webers for a 390, but if you can, you can nearly as easily run 8 throttle bodies. It will look cool and make tons of power, but it won't be cheap.
Click to expand...

Running 4 webbers would be more difficult to tune for the average wrencher as parts and tuning are not the same as a "conventional" carb like a Holley. Plus you need a synchrometer to tune ITB setups. Webber jets and emulsion tubes (like an air bleed/common vacuum reference) aren't usually a typical "speed shop" part like Holley components.

But in any case the IDA setup has been marketed for FE's by Inglese Induction Systems (COMP Group)....
 
MaliciousMD
Running 4 webbers would be more difficult to tune for the average wrencher as parts and tuning are not the same as a "conventional" carb like a Holley. Plus you need a synchrometer to tune ITB setups. Webber jets and emulsion tubes (like an air bleed/common vacuum reference) aren't usually a typical "speed shop" part like Holley components.

But in any case the IDA setup has been marketed for FE's by Inglese Induction Systems (COMP Group)....
Click to expand...

Don't worry running mulitple's of anything is no problem he just doesn't want to sync everything. The thought about modifying a Cross Boss intake that they found years ago to fit but he was too lazy. He's built up motors with my help before so this is wouldn't be too difficult. He's used these setups before, not his his personal vehicles but friends of his and it wasn't an issue.

I don't think running several would be practical though. Is there any way a single or maybe double could work? Trying to find a dual intake would be tough unless we made one.
 
If the reason for fuel injection is he's lazy then that's not really a good reason. There are usually quite a few sensors and harnesses to hook up even on a "plug and play" system. Also tbi isnt that big of an upgrade so you might want to rethink it. I've seen some older big block Ford's retrofitted to run the modular 4.6 efi but that is a bit custom even though it may end up cheaper than a plug and play system.
 
He wants fuel injection on the next engine just for something different and I think possibility of better gas mileage. There is laziness in there though.
 

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