I was looking for a list of the parts needed to reform my 1986 4x4 from EFI to carburator. And maybe some how to on the subject. I know intake will have to be changed,distubtor,fuel pump,but how about transmission? Any and all help would be appreiciated.

 

Why would you want to do that? Just wondering.
Anyway, I don't think the trans in 86 were computer controlled. Your talking about swapping dizzy, are you planning of stripping all the smog stuff and going back to something like the DSII?

 

The transmission was not computer controlled during these years. However, if you have the AOD (Automatic Overdrive), it is extremely important to get the throttle valve rod or cable hooked up correctly.

See here:
https://www.ford-trucks.com/forums/1...l#post11694267

In addition to the transmission parts listed above in the link (if you have an AOD), you will also need:

air cleaner
carburetor and studs
intake manifold and gaskets
throttle cable
fuel pump
fuel line (pump to carburetor)
fuel filter
distributor
rotor
ignition module
coil
wire harness to connect the distributor, ignition module, and coil to the truck

 

On an 86, the EFI gets it's power from a set of plugs on the left inner fender, these are the same power source the 351 and 460 engines used for their DSII systems. It's basically plug and play once you have the parts. I emphasize what Lariat85 says about the AOD linkage, try to find an early 80s V8 car in a junkyard for linkage.

 

Lariat 85, About the fuel pump don,t have abilty to postion on side with manuel fuel pump .what kind do you suggest. Thanks

 

The other question remains. why? it WILL NOT give you any more power, especially with the stock heads and cam on the 5.0. They are the worst heads Ford ever designed for this motor. It will actually achieve less fuel economy.

 

Local parts store have in line fuel pumpa for bout 40 bucks thats what i would use if it were me. I would rather have carb over injection any day easier to trouble shoot plus not as cluttered with smog.. Fuel injectors are expencive

 

What are you going to do about the fuel tanks and the pumps inside them? And also the pump on the frame rail?

 

Can you just put a fuel pressure regulator on there

 

If he deletes the high pressure pump and gets a tank selector valve from a 351 or 460 with the hot fuel handling package, then a small pressure regulator would do it. FWIW, having spent a number of years in the business, I have worked on carbureted engines, mechanical injection engines, and electronic injection engines. All have their specific advantages. If you really want simple, easier to troubleshoot, go all the way back to breaker point ignition.

 

Lots of info on the '87-96 forum here on FTE on changing from EFI to carb.

 

I did this when I put a later motor into my 84 Bronco.

Figured it was easier to convert the motor to Carb than the truck to EFI. Easier yes, more reliable/powerful/economical not so much.

Rather than changing the timing cover on the new engine I put in an in-line low pressure pump buried in the frame rail. Two problems related to this:

- It was wired "on with ignition". The right way would be to have an interrupt as found on any newer EFI vehicle. Thankfully I never hit anything so this wasn't an issue - Mr Murphy doesn't often let things like this go when I'm involved.

- I had a lot of trouble with the Carter pumps which I believe were made in China. After 6 or 8 of them (they'd work for a while) I finally found an alternate but can't recall the maker (I'm getting old and dim). It was not easy to locate an alternative to the Carter without going to an obnoxious loud and expensive pump for the racing market, you need one with integral regulator.

My conclusion - would have been better to nab the computer from the donor truck and buy a tank with a pump in it. Second best would have been changing the timing cover and using the mechanical fuel pump. Either would have made my post-rebuild experience much happier, and safer.

Good luck,
- Jeff

 

lariat85 followed some post of yours.... you have a fan... chime in if you could on my problem. sorry for hijacking

 

Hey
I used a holley by pass regulator from summit 70.00
Got rid of the hi pressure pump
Tank pumps only
Ran better when I turned it down 1 turn.