I have a wrecked 95 bronco 5.8 4x4 and I want to put the motor in a 95 bronco that has a 5.0 with a blown motor. both have good drive tranes from transmission back. Is there going to be any serious problems with the swap. How far will I need to go back transmission,Transfercase,or driveshaft. Thanks for all replies.

 

Just swap the motor. Both trucks have the same transmission and transfer case. You won't even need to swap motor mounts, just the computer and engine.

Are both speed density or mass air?

 

Get a definitive answer on Andym's question regarding speed density and mass air.

Regardless of whether they are SD or MAF you will end up with one un-used connector if you don't swap the main engine-bay wiring harness from the truck with the 5.8 to the truck that had the 5.0. The 5.8 has no knock sensor but the 5.0 does. The KS is located at the top rear of the 5.0 in the webbing between the transmission bellhousing and the lower intake manifold. That said, you DO NOT have to swap harnesses. Just swap engines and computers. The 5.8 computer won't be looking for the knock sensor anyway. Just remember when you get there that you aren't going to have anything to plug into the KS connector.

 

so if your 95 5.0 bronco is mass air just swap in your 95 5.8 motor complete and be on your way. the 95 5.0 computer and harness will work on the 5.8 just fine.

if your 95 5.0 is speed density then you can either swap over your 95 5.8 harness and computer or just the computer and reuse the 5.0 harness leaving the knock sensor tied up.

be sure to leave the 5.8 flexplate on the 5.8. you will need to carry over your 5.8 y pipe to the 95 5.0 bronco.

 

THANKS GUYS, ALL OF YOU GAVE ME HOPE. I have been a member of the F. T. E. for several years and I just cant get over how great this site is. Thanks again.
P S : All Input is welcome.

 

How can I tell if the two motors are Speed Density or Mass Air Flow

 

An engine equipped with MAF technology will have a sensor mounted IN the air intake hose between the air filter housing (box) and the throttle body. It will be closer to the filter box. This is the most obvious difference between the two motors on first glance.

 

The mass air sensor is the aluminum piece bolted to the filter box. Kenny

 

There ya go.. an actual photo. None of mine are MAF so I couldn't provide one.

 

Thanks again. you have been a great help

 

The 5.0 eec will deliver enough fuel for a 5.8?? I thought that might cause lean conditions..

 

if its mass air it wont care how big the motor is. the injectors for either engine are 19lbs and the fuel pressure is also the same.

Mass air reads the incoming air and gives what the engine needs. VS speed density it uses various sensors and preset fuel map tables etc..

if you want it spot on then get a chip burned but generally unecessary.

 

Have you done this? (Run a 5.8 with a 5.0 MAF EEC)

Hmm, I figured the injector pulse width would be different (I.E. longer for a giver RPM on a 5.8 vs a 5.0) enough to require tuning.

 

I have and yes it works fine.

Injector pulsewidth is calculated on the fly with both systems it is not something that is pre-programmed in a table. The MAF system measures the actual air mass as it is being drawn into the motor so the computer knows exactly how much fuel it needs to add in real time. In comparison the SD system only has O2 sensor readings to tell the computer if the engine is rich or lean, and even then it doesn't know how rich or lean the motor is so it's always playing catchup and as a result cannot handle a motor with fuel requirements that are much different than what it was programmed for. In both cases there is enough adjustment range available to handle some pretty good mods, it's just that the basic fuel curve has to remain the same with an SD computer.. meaning it can't adapt to a larger motor very well.

That said, fuel requirements for an all stock 5.0 and 5.8 aren't that different, from '94 on both motors use the same heads, cam, and injectors so one would probably run half decent on the other's computer anyway.

 

Hmm. This might solve the EGR conflict for me:

All the 95 5.8 MAF trucks I've grabbed EECs from have the newer DPFE style EGR. I have a MAF 5.0 truck EEC that is set up for the older sonic EGR. Only trouble is there's some conflict with the 5.0/MAF e40d controls as compared with my 92SD EEC&wiring.