4 BBL carbed intake to EFI

[Jerrod4567]

I'm starting a project and I will be the first to say I am not 100% sure what I'm doing. I'm taking a Weiand Stealth intake manifold and installing fuel injector bungs into it for my EFI project. I'm curious as to what I have to do to adapt a throttle body to the intake manifold. Has anyone done this? Which ones will work etc and what needs to be done? Thanks a lot.

 

[Skuzzlebutt]

What kind of EFI are you using?

 

[DonsBolt]

you may want to check out, or at least call these guys.

They now make there own manifold for small block fords, but they used to modify Edelbrock manifilds to work with there systems.

Maybee they have a old manifold laying around with the posts allready welded in.

http://www.mass-floefi.com/mass-flo.html

 

[70_Steve]

http://www.intakeelbows.com/mustangelbows.htm

 

[Jerrod4567]

Thanks for the info guys, much appreciated!

 

[ugly74]

let me know how it turns out. If I ever get around to EFI, that's how I want to do it. and then keep a Holley in the back, so that way, if it ever gives me trouble, I can just toss the carb back on to get goin!

 

[jr]

Never tried this setup just another option.

http://www.redlineweber.com/html/ford/throttle_body/Ford_t_bodies.htm

http://www.affordable-fuel-injection.com/ford-kit.htm

http://www.coasthigh.com/Fuel Injection/retrojection.htm

 

[Socal Tom]

I'm starting a project and I will be the first to say I am not 100% sure what I'm doing. I'm taking a Weiand Stealth intake manifold and installing fuel injector bungs into it for my EFI project. I'm curious as to what I have to do to adapt a throttle body to the intake manifold. Has anyone done this? Which ones will work etc and what needs to be done? Thanks a lot.

Why?

Tom

 

[Jerrod4567]

Why?

Tom

Why what?

 

[Socal Tom]

Why what?

Why create a do it yourself EFI system, when Ford spent millions creating one that will bolt on and work like a champ?
Tom

 

[SaddleUp]

Why what?

I think the "Why" is:
Why not just pick up a 5.0 manifold and save yourself a lot of work?

 

[okorangebrnco]

Coast high performance has what they call a spyder EFI. same thing you are basically doing

 

[pondscum]

The "why" is not the same for everybody. I understand that Ford created an EFI which is about the best that can be obtained; however, if he wants to make his own EFI then so be it. I wouldn't, but that is only because I have built things before which could have been purchased. The only thing more remarkable than our ability to learn from others mistakes is our is our disinclination to do so. I think this thread has plenty of reasons to not do your own EFI Jerrod, but if you still want to then go for it!

 

[SaddleUp]

let me know how it turns out. If I ever get around to EFI, that's how I want to do it. and then keep a Holley in the back, so that way, if it ever gives me trouble, I can just toss the carb back on to get goin!

Have you considered everything else that needs to be changed to swap from EFI to carb even if the carb bolts to the intake? There's more to it than just dropping the carb on and chances are high it would take less time to diagnose and get the EFI running again. (There isn't much in the EFI that can fail and keep it from running)

 

[Dave]

Never tried this setup just another option.

http://www.redlineweber.com/html/ford/throttle_body/Ford_t_bodies.htm

http://www.affordable-fuel-injection.com/ford-kit.htm

Got involved with a throttle body system from Affordable installation on a Scout. Not too many engine options for those guys so it made sense. It costs more than finding a complete 5.0 with sequencial fuel injection and mass flow which in my opinion is a superion system.

 

[Jerrod4567]

I like fabricating my own things. I already have some of the parts to do this swap and think it will be quite the accomplisment if I can make it all work.

 

[4x4man514]

ive been exploring the possibilities also. since im building a 393 i cant use all the 302 mustang manifolds. what ive learned about the spyder intakes is that they are for high rpm high hp motors. it seems as though the common gt-40 lower/explorer upper is not quite enough for a moderately built 393. so im kinda stuck in the middle. i seem to be leaning toward the trick flow 351w intake with the 90mm tb. it seems to be the best match so far but of course at 600+ dollars it ought to be. i would love to hear more opinions on this. as i said before ive been researching and getting ready for my swap. alot of my info has come from mustang forums so they mught be a little more extreme than us bronco guys.

 

[Jerrod4567]

ive been exploring the possibilities also. since im building a 393 i cant use all the 302 mustang manifolds. what ive learned about the spyder intakes is that they are for high rpm high hp motors. it seems as though the common gt-40 lower/explorer upper is not quite enough for a moderately built 393. so im kinda stuck in the middle. i seem to be leaning toward the trick flow 351w intake with the 90mm tb. it seems to be the best match so far but of course at 600+ dollars it ought to be. i would love to hear more opinions on this. as i said before ive been researching and getting ready for my swap. alot of my info has come from mustang forums so they mught be a little more extreme than us bronco guys.

Mine is also a 393W

 

[jghflys]

I'm taking a Weiand Stealth intake manifold and installing fuel injector bungs into it for my EFI project.

When you get the injector bungs installed, post a picture. I am considering the same modification. I love the Stealth because of its wide power band. However, the Stealth is a dual plane manifold so the intake runners are at different heights. This means that the injector bungs will need to be installed at different depths so they will be level at the tops for the fuel rail fit properly.

Installing the bungs at different depths means that the spray from the injectors will enter the intake runner differently in the high and low intake runners. I haven't done enough research to resolve this in my own mind. I don't think it would make much difference but I dont know for sure.

James

 

[4x4man514]

Mine is also a 393W

so what kind of power are you expecting out of your motor?