460 EFI Info request

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Jan 27, 2004 | 09:12 PM

faststangs

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460 EFI Info request

Hello,

I am in the process of trying to convert a '70 Lincoln 460 engine to EFI for a street rod project and have some questions about the factory EFI stetup in the 88' - 96' Ford 7.5L efi vehicles. First off, were these EFI systems the speed density type (ie no MAF sensor)? Were they SEFI or Batch fire systems? I ask because I don't know if I can run one using a standard Ford SEFI computer (A9L & MAF system) like what was in the factory 5.0L mustangs from 89'-93' because the BBF firing order is different from the 5.0L HO. Should I get a computer & wiring from a factory 7.5L truck? The last question is about the distributors...I think that ford used a TFI distrutor on the 7.5L but which year models had the TFI (ignition module) attached to the dist housing? This is the one that I will need for my conversion.

Any info is greatly appreciated! Thanks!

Jan 28, 2004 | 05:12 PM

leadmic

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Joined: Feb 2002

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From: Tulare U.S.A.

Ok what you want to find is a 96-97 california 460. They are OBDII not great lots of extra stuff you dont need, but they also are the only 460s that were MAF with SEFI. They run alot better and get better milage. The MAF is 80mm and they have 24lb. high flow injectors. So unless your going to get really wild with the mods the stock system will work fine. This system has the TFI module mounted on the fender well I personaly would rather have It on the fender not as much heat.
I hope this helps Leadmic

Jan 28, 2004 | 06:48 PM

faststangs

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Thanks leadmic,

That is great info to have. Were the other non-california 7.5L engines speed density/batch fire? Did any years have the TFI module mounted on the distributor? I have a complete 460 EFi upper & Lower w/ injectors & TB and the wiring harness has the TFI connector right by where the Dist would be...I just don't know what year the manifild is.

Thanks,
Faststangs

Jan 28, 2004 | 07:49 PM

c_rossman

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From: Cloud USA

I believe Ford changed the location of the TFI in the early 90's My 93 has it mounted on the firewall. If you use a EFI intake on older heads, You may have to modify the intake slightly to make the ports match up. I have heard many people use Devcon aluminum putty to fill in the voids on the bottom side of the intake to avoid leaks.

Jan 29, 2004 | 01:53 PM

leadmic

Fleet Mechanic

Joined: Feb 2002

Posts: 1,483

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From: Tulare U.S.A.

The only MAF SEFI 460 (to my knoledge) were 96-97 OBDII Calif. modles. Also if you try to make the EFI stuff work on the older eng. your going to have problems. Im not saying it cant be done in fact if you do a search I think someone posted that they had done that very thing. At least I think it was on this board that I read that. Any way If you have access to a 93 or newer 460 heads they have larger valves and the port configuration is better than any standard 460 the only problem is the ports are too small for major RPMS. Im not sure what your are planning on doing with this engine but if you dont plan on turning it over 6000 RPMS the stock 93 and newer EFI heads with some light porting will work well.
Leadmic

Jan 29, 2004 | 02:29 PM

bigsnag

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From: Pryor

Some have talked about getting the EFI kit from Ford racing that is designed for the 5.8. The firing order is different but that would only require a little cutting/splicing or re-routing of the wires to each injector. It is a nice kit that comes with a large MAF.

Jan 29, 2004 | 03:53 PM

wtroger

Cargo Master

Joined: May 2001

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Other than California trucks 87-95 where batch no-maf my 89 has the tfi on the distributor. I believe 92 is when the tfi module moved to the fender. And yes it was moved due to heat issues and the fact the Ford had S**t sued out of them for heat induced tfi module failures.

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Jan 31, 2004 | 06:31 PM

c_rossman

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Joined: Mar 2003

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From: Cloud USA

What I would do is buy a intake gasket set for pre EFI, and a EFI system and compare port sizes and locations. It will get you close but not perfect, but you can see what has to be done.

Feb 11, 2004 | 10:41 PM

#10

f350bronco

Junior User

Joined: Jan 2001

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EFI with D0VE heads

I am running a 1992 460 with 1970 D0VE-C heads. I matched the upper shape of the intake runner to the heads including an extra divit for the injector. It is a fair amount of iron to die grind away but there is plenty of casting there. Grinding the 8 intake ports on heads probably took about 20 hours.

The lower half of the intake needs porting as well. But here there is not enough aluminum so I had a local shop build up the bottoms of the runners for $60. I then matched the ports. A machine shop trued up the gasket surfaces on the intake. I made custom gaskets with tops like the EFI intake and bottoms like the D0VE heads.

-john
1994 Bronco 460 D0VE heads and MAF EFI
Dana 60 posi and Ford 10.25 DLocker 4.10 gears
C-6 and NP205
It can climb trees but I can't pass a gas station.