5.0 MAF EFI?
Posting Guru
Joined: Jun 2002
Posts: 2,091
Likes: 3
From: Suffolk, VA USA
I did the conversion without the kit on my 86 using an A9P computer. For the 86, which is slighly more work than a newer truck, took 37 modifications to the wiring harness. I was able to do all the mods, soldered and heat shrinked, in about 5 hours. It really wasn't that tough.
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Postmaster
Joined: Mar 2005
Posts: 2,949
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From: Earth
Interesting. I have an old Holley Pro-Jection throttle body sitting around, so I could theoretically have someone machine injector bosses into a single plane carb manifold and DIY a Mass-Flo type system. The TB already has a TPS and IAC, all I'd need to do is figure out how to mount the MAF sensor.
A couple of bills for the EEC, harness, and assorted sensors, probably another $500 for the manifold and machine work, a couple more bills for injectors and plumbing, fifty to get the TB reconditioned. That I could live with. MAF sensor ????, Mass Flo sells theirs for $549 and that won't happen.
Does that seem too far fetched?
A couple of bills for the EEC, harness, and assorted sensors, probably another $500 for the manifold and machine work, a couple more bills for injectors and plumbing, fifty to get the TB reconditioned. That I could live with. MAF sensor ????, Mass Flo sells theirs for $549 and that won't happen.
Does that seem too far fetched?
Senior User
Joined: Aug 2007
Posts: 388
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From: CANADA
The mass air sensors typically used by mass flo are simply a new style chevy meter turned on its side with an adapter to fit in the throttle body and fit inside the air cleaner. then they use a converter box so the ford computer can read the chevy meter. the meters mass flo use are supplied by PMAS (proffesional mass air systems). There are also a few manifolds that come with the bosses for injectors already in them (unless you already had one that you want to use) The only thing far fetched is the price for that air meter, Ouch. A granatelli unit for an LS1 is around 300 bones. Does mass flos unit come with the adapter and junction box maybe?
Elder User
Joined: Oct 2005
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if you are doing this to put efi in a mustang..... I would advise saving you money and canceling the project..... rewire the stang with a painless harness and spending the four grand of the FAST efi for the mustang...... you will thank yourself later on.... its just my opinion but I would do that.... stock ford efi is not worth messing around with if you are trying to run high lift cams and make lots of power...... you want something you can tune easily which stock stuff is now...... plus........ in my days with this stuff on the 87-93 we all ending up ditching the EFI for carbs in the end anyway because that stuff was too much of a hassle to mess with..... carbs are self metering... EFI is not..... and you get what you pay for.... as in.... building an awesome motor and leaving 20% of the hp on the table because your efi system is not up to the task is kinda lame..... so thats my two cents
Senior User
Joined: Aug 2007
Posts: 388
Likes: 0
From: CANADA
I would advise saving you money and canceling the project..... rewire the stang with a painless harness and spending the four grand of the FAST efi for the mustang. stock ford efi is not worth messing around with if you are trying to run high lift cams and make lots of power...... you want something you can tune easily which stock stuff is now...... plus........ in my days with this stuff on the 87-93 we all ending up ditching the EFI for carbs in the end anyway because that stuff was too much of a hassle to mess with..... carbs are self metering... EFI is not..... and you get what you pay for.... as in.... building an awesome motor and leaving 20% of the hp on the table because your efi system is not up to the task is kinda lame..... so thats my two cents
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Yeah $4k is a silly price to pay to put EFI in an old car. Painless makes a harness for the old stangs that's relatively cheap, you just provide all the other hard parts like fuel rail and injectors, computer and MAF meter, intake and distributor which can be pilfered from one of many EFI Ford vehicles for next to nothing.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Interesting. I have an old Holley Pro-Jection throttle body sitting around, so I could theoretically have someone machine injector bosses into a single plane carb manifold and DIY a Mass-Flo type system. The TB already has a TPS and IAC, all I'd need to do is figure out how to mount the MAF sensor.
A couple of bills for the EEC, harness, and assorted sensors, probably another $500 for the manifold and machine work, a couple more bills for injectors and plumbing, fifty to get the TB reconditioned. That I could live with. MAF sensor ????, Mass Flo sells theirs for $549 and that won't happen. Does that seem too far fetched?
A couple of bills for the EEC, harness, and assorted sensors, probably another $500 for the manifold and machine work, a couple more bills for injectors and plumbing, fifty to get the TB reconditioned. That I could live with. MAF sensor ????, Mass Flo sells theirs for $549 and that won't happen. Does that seem too far fetched?
But there's really no reason not us use a complete 5.0 truck EFI setup in the Bronco, they're plentiful, cheap, and it's big enough to support a pretty well built motor.
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Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
You and I are on the same page, Paul, the Bronco is getting a factory set up and the Mustang would get the Frankenjection, maybe, down the line. That manifold is the coup de grace, at that price I could probably pull Frankenjection off for ~$600.
If I won the freaking lottery tomorrow in three years the local news would be doing the story about the homeless guy with the $3 million Mustang and two $1 million Ford trucks. I don't know if that's good or bad, but it is what it is.
Anyway, it doesn't sound like it will be too tough to piece together what I need for the Bronco. I think if I'm patient I can get everything I need for $300-400. I hate rooting around in a wrecking yard when it's cold anyway. That's probably pretty funny to you guys in Canada coming from Deepinthehearto', TX.
And here's a little pointer for collecting parts - do yourself a favor and get a cordless impact wrench. You won't know how you ever lived without one. It won't break everything loose, but I swear I could pull an engine in about an hour with the little 3/8" Milwaukee one I got.
If I won the freaking lottery tomorrow in three years the local news would be doing the story about the homeless guy with the $3 million Mustang and two $1 million Ford trucks. I don't know if that's good or bad, but it is what it is.
Anyway, it doesn't sound like it will be too tough to piece together what I need for the Bronco. I think if I'm patient I can get everything I need for $300-400. I hate rooting around in a wrecking yard when it's cold anyway. That's probably pretty funny to you guys in Canada coming from Deepinthehearto', TX.
And here's a little pointer for collecting parts - do yourself a favor and get a cordless impact wrench. You won't know how you ever lived without one. It won't break everything loose, but I swear I could pull an engine in about an hour with the little 3/8" Milwaukee one I got.
Posting Guru
Joined: Jun 2002
Posts: 2,091
Likes: 3
From: Suffolk, VA USA
Here's the parts list and what I paid...even less than you think and pretty easy to find.
A9P Computer - Ebay - $87
75mm Ford MAF - Ebay - $55
O2 Sensor - NAPA - $40
O2 Sensor bung - Summit - $2
K&N Conical Air Filter - Summit -$35
EGR Control Solenoid, Air intake tube, Assorted pigtails -Boneyard - $10
Assorted nuts, bolts, connectors - Lowes - $10
Wire, shrink wrap - Harbor Freight - $10
A9P Computer - Ebay - $87
75mm Ford MAF - Ebay - $55
O2 Sensor - NAPA - $40
O2 Sensor bung - Summit - $2
K&N Conical Air Filter - Summit -$35
EGR Control Solenoid, Air intake tube, Assorted pigtails -Boneyard - $10
Assorted nuts, bolts, connectors - Lowes - $10
Wire, shrink wrap - Harbor Freight - $10
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Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
One more thing, let's suppose I had a 351w cam laying around and wanted to use it in the 302. Can the EEC handle shuffling around the injectors and firing order? Surely someone has done a 351w MAF conversion...
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
The native firing order for these MAF computers is the 351/HO firing order. To make it work on an older motor you just have to swap wires for the middle two injector pairs in the firing order and only use 1 O2 sensor.
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Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
Alrighty then, I found a yard that's got several Ford p/u including a 94. The cat I spoke to couldn't remember if it was a 5.0 or 5.8 and he was driving home at the time. Fingers crossed it's a 5.0.
Are factory 5.0 uppers interchangeable? Like a Mustang upper on a truck lower?
Does anybody have or know of a pic/diagram/map with all the pieces I need to snag? Is anything hidden where you wouldn't expect? Any special tools I need to bring along?
Are factory 5.0 uppers interchangeable? Like a Mustang upper on a truck lower?
Does anybody have or know of a pic/diagram/map with all the pieces I need to snag? Is anything hidden where you wouldn't expect? Any special tools I need to bring along?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Are you after the motor or harness/computer or both?