i am swapin a 4.9L with a 5.0L. now my question is what ecu do i need? i have a 89 f150 4-speed 4x4. i know i need a 5.0 ecu but i have had some people say that any 5.0 ecu will work and i have had others say that i need a 5.0 4x4 4-speed ecu. i think just a 5.0 ecu any manual style will work but i need to make sure so i have it in hand instead of finding out the hard way..

 

Need more info. 4x4, automatic (if so, which one), definitely need one for a truck, though

 

wow the second sentence says its 4x4 and a 4-speed trans (manual). and for michiganman3 sorry but i have no input for this

 

yes it is a 4-speed manual, 4x4,1989. i have a 1989 2wd 5.0L , 5-speed ecu that i got in a truck i bought for the cab and parts.

 

sorry bud i have no clue as to your question but i got an 89 5.0 and did you say you just got the ecu or you have the truck. cause if you were goin to part it out. i got a few things i would be willin to buy

 

It really doesn't matter as there were no electronic automatics in 89, unless the E4OD was around back then...

Getting a ECU from an 89 model would be nice, though.


All that work for 0.1L's...yeesh.

 

89 was the first year of the E4OD in the F-150. That's a moot point because the OP has a manual tranny.

It's not the 0.1 liter that's the issue - the 4.9 is a slow revving torquey inline 6 that has zilch horsepower, designed to WORK, not go fast. The 5.0 is a small block short stroke V8. It's going to accelerate a lot quicker but it doesn't have the low end grunt of the I6. It's probably going to get better gas mileage and feel a lot peppier until you start trying to do actual work with the truck.

I believe that 4 speed stick has a granny low - that will compensate a LOT for less bottom end torque.

 

well i knew this was a hard one but i dont know. for putting a 5.0 over a 4.9 thier is a big difference, and its not alot of work to swap out motors in this year of trucks i just not to sure on the ecu question that i am having a hard time gettin a answer for. i have been told more than not that a manual ecu will work but just curious if it has to 4x4 too.
and for any parts let me know witch ones u are looking for?

 

It all depends what you use the truck for! If you use it as a TRUCK, the 4.9 is better suited to the job.

 

I dont know for sure I've never done it but The electronics I believe should be the same for either trannyr. I assume your wanting to go with an EFI 5.0. The ones I've worked on manual and automatic seemed the same to me there may be a programing difference though. I would think if you got the one out of any manual you would be good. If you went carbed there isnt a computer to worry about..