i need a bit of info. I have a 93 f-150, but I have the option of yanking the 5.8 out and swaping in a fresh 96 5.8. will all the electrical and sensors work? I notice that the air injection on the 93 is in the head, and on the 96 it is in the manifold, will this be an issue? can i just re-route the check valce and pipe of the exahust to the manifold? is the 96 a better motor all around then the 93?

 

The egine itself is identical, but everything bolted on & wired up is different. The '93 is a MAP (speed/density) EEC-IV engine and the '96 is a MAF OBD-II. You can swap the long blocks directly, but anything more and you'll need extensive mods.

If you're confident in wiring, it's worth it to go to MAF. If not, you should probably just look at a quality reman engine with a warranty.

 

what wiring is involved in converting to mass air? i have option to go get the complete 96 motor, manifolds and tin. is the computer-harness different?

 

It's not just converting to mass-air, you would have to convert to OBD-II. The computer on the 96 is different. The engine harness is different. The chassis harness is different. The sensor array is different. The controls are different. The air intake is different. The 93 and the 96 share nothing but mechanical parts and there are even some minor differences there. It is simply not practical and may not even be possible to fit the MAF/OBD-II controls to an older truck

 

what about swaping the manifolds and tin from the 93 to the 96 block? would that work? the motors should be pretty much the same, aside from minor details -correct?

 

That's what I said.

 

I've seen some F-250 Heavy Duty 5.8s that were still SD... What years were 5.8s MAF in our truck??

 

It was used on California trucks as early as '94 and they were EEC-IV, which is nice. In '96, all under 8500 lb GVWR went MAF OBD-II. The heavy gassers went that way when the body changed. I had a '95 OBD-II PSTD F-350, so I don't know exactly when they changed.

 

were the HP and Torque increases in 96 due to the electronics or MAF? Intake?

 

what are the minor differences between the 93 and the 96 long block?

 

They're all minor. The damper pulley is different because the 96 incorporates a misfire sensor. The upper manifold vacuum connections are different since the 96 has no MAP sensor. I'm pretty sure the distributor is different since they'd pitched the integral TFI module by 96. Because of the differences in engine controls, there may be some minor differences in the camshaft, but I'm guessing on that one.

 

I believe the 96 is going to be a roller motor and the 93 isn't. Thats the HP gain.

 

Distributor is the same.

 

Doesn't the 93 have the integral TFI module in the distributor?

 

The TFI module sits on the driver's fender well in my '93, right near the cruise control hardware. The distributor housing has a flat area machined on it where the module was originally placed. It looks like Ford used the same distributor housing after moving the TFI to the fender but did not drill and tap the mounting holes into the machined flat.