EFI 351?

[Nathan in MI]

Actually what woud work is using a Performer RPM carb intake, and then running an elbow. it would be expensive but it would fit under the sotck hood.

Can you explain what you mean? I'm not sure I understand.

[DuceAnAHalf]

Can you explain what you mean? I'm not sure I understand.

This but with a shorter dual plane intake.

Price is a big draw back if you get one of their kits. They run about $800, i believe you can pick up the elbow alone for under $100, then you would need an intake and then have it machined to accept the fuel rails.

These set-ups have the potential to produce some insane power. Take a look at any fast SBF drag cars. The majority will be using a set up like this.

[85crownHPP]

Thats what I plan to have for my "hot rod" box... a wicked EFI 351 with aftermarker induction like that. Hell why not a supercharger too.
My old boss does welding and metal fabbing so Id get him to cut and raise the upper part of the hood like Scott used to have photochopped in his sig.
(one day.... )

[Nathan in MI]

COOL! So then I could basically use the 4 bbl intake of my choice, put the elbow on there, mount the throttle body on the elbow, and go?

[DuceAnAHalf]

COOL! So then I could basically use the 4 bbl intake of my choice, put the elbow on there, mount the throttle body on the elbow, and go?

Yup. Just gottta get the intake drilled for the fuel rails.

[Nathan in MI]

Yup. Just gottta get the intake drilled for the fuel rails.

So is that something I would have to have professionally done or could I manage it with a drill press and a set of pipe taps?

[DuceAnAHalf]

So is that something I would have to have professionally done or could I manage it with a drill press and a set of pipe taps?

Id practice on an old intake first.

Just have to make sure you get the spacing and angle right. Also the injectors dont use NPT fittings they just use o-rings. Would be best to find an intake that has nitrous bosses in it so that there is little more meat there for stability.

[mrltd]

It will require welding too...not just drilling. You need to weld injector bungs in it for the best results.

As for hood clearance, pretty much cutting a big ass hole in the hood.

[Nathan in MI]

Another Possibility

DuceanaHalf's suggestion got me to thinking, so last night Capridrifter and I put our heads together and came up with a scenario that might work, and keep everything nice and low under the hood.

Rather than using the elbow and a standard throttle body, which would mean I would have to worry about finding an intake that was low enough, could I just use a 4 bbl throttle body like this? Then use 24 lb./hr injectors, ECM from a T5 Mustang or manual trans 351W truck (does such a thing even exist?), and sensors from the 351 truck EFI system. I'm also wondering how/if it would be possible to use a MAF sensor with this system since it is not a standard style throttle body.

Sorry for being so long winded, but I'm just trying to figure out what to do here.

[DuceAnAHalf]

DuceanaHalf's suggestion got me to thinking, so last night Capridrifter and I put our heads together and came up with a scenario that might work, and keep everything nice and low under the hood.

Rather than using the elbow and a standard throttle body, which would mean I would have to worry about finding an intake that was low enough, could I just use a 4 bbl throttle body like this? Then use 24 lb./hr injectors, ECM from a T5 Mustang or manual trans 351W truck (does such a thing even exist?), and sensors from the 351 truck EFI system. I'm also wondering how/if it would be possible to use a MAF sensor with this system since it is not a standard style throttle body.

Sorry for being so long winded, but I'm just trying to figure out what to do here.

That is basically the Holley Pro-jection set-up, also that set-up is basically a speed density set-up, not mass air

[Nathan in MI]

basically a speed density set-up

And this is? Sorry, I'm just not terribly familiar with EFI system terminology, though I've learned an awful lot recently.

And I just looked at the Holley Pro-jection system. That's a TBI setup, which isn't what I'm talking about. I mean just a 4 bbl throttle body, but still with injectors at each port.

[DuceAnAHalf]

And this is? Sorry, I'm just not terribly familiar with EFI system terminology, though I've learned an awful lot recently.

And I just looked at the Holley Pro-jection system. That's a TBI setup, which isn't what I'm talking about. I mean just a 4 bbl throttle body, but still with injectors at each port.

Speed density does not use a mass air meter. it uses air temp and manifold vacuum to determine how much air is going in the motor (im sure someone who knows more about it than me will chime in. Im a carb guy)

[interceptor1985]

yeah we were trying to figure out away to get the EFI to work.. Anyone know if a 1989 or newer ford F140 2wd truck ever came with a 351 and a manual trans?if so then that would be easer to get this to work....Right?

[gadget73]

I have seen a 90s 351 F250 with a manual trans and EEC IV computer, so yes they do exist. The truck EFI is batch fire, not sequential efi. You might be better off having a SEFI computer re-programmed, or if you can find the lightning ecm, use that. The lightning ecm is supposedly sequential efi.

[Nathan in MI]

Okay, one more question on this situation. If I use a 4 bbl intake and have to have it drilled for injectors, where would I have that done? Is that something a machine shop can do? And what do I ask them to do? Will they know what size to make the holes (assuming I provide them with an injector) and what angle to make the holes at or do I have to figure this out for myself and tell them what I want?