Hello,
I have a 1990 Bronco 5.0 with 5 spd manual transmission, and I'm probably going to change the motor soon. It has always been somewhat of an underperformer in terms of power, so I'd like to upgrade to a roller cam engine, and try and increase the horsepower a little but keep it a daily driver. Can anyone give input regarding compatibility problems if I were to use a motor out of a mustang or a crown victoria of a similar year? I'd also appreciate any guidance regarding my options for using a different EFI system (either a aftermarket system, or the EFI system from the donor car).
Thank yoyu

 

A mustand engine will do what you want and so would an Explorer 5.0 but don't use a Crown Vic/Town Car engine they are weaker than the one you have now.
In all cases you need to strip the donors to the bare longblock and use only the intake, accessory components, and wiring that is currently in your truck, with that done the motor will bolt in and run.

 

Thanks for the input.

 

Rebuilding what you have is an option if you have time. Your ‘90 has a roller block.

 

From what I've read, the Mustang 5.0 has a different cam profile which puts the power output at a higher RPM and isn't as suitable for a heavy truck. The truck 5.0 puts it lower, where it's more usable.
Not sure on the accuracy of that but is something to consider.

 

Not accurate, the truck 5.0 just make less HP and TQ overall... there is no getting more at lower rpms from this displacement. The 5.0HO still makes it's peak power at lower rpms than the coyote 5.0 so it's really not that high strung, only 4500rpm vs 5750rpm.

 

This is all helpful so thank you for the info. I will almost surely go with a donor motor of some sort because I wont be able to have the car undrivable long enough to build the motor that is in it. The motor currently in it is original, and did not come with a roller cam, although I've read that it could be converted if I were to tap the holes that hold the roller spider down (not sure how true that is so please educate me if anyone knows for sure).

Also, If I'm understanding the research I've been doing, it looks like the roller motors had a different firing order than the non roller.

If it is possible to convert a non roller motor of the same basic year from another truck and turn it into a roller motor, any thoughts on the wisdom of that in terms of it helping me increase the HP if I use more of a performance cam? I used to build motors fairly frequently in the 1980s, but not much since then so I'm a little behind the times. We used to use what we called a 'RV cam' to help the motor with low end power. I don't need the thing to be super fast, but my plan is to be able to pull a small double axle camper with the Bronco in the mountains when I'm done.

 

I converted the 5.0 from my '90 F150 from flat tapet to roller and no drilling was necessary, the E7TE block is already setup for a roller cam so swapping in all the factory roller hardware(that I sourced from a scrapyard) was literally a bolt-in affair.

Yes but it doesn't matter with the EFI system in your truck, it works with both firing orders.

Oh... well then you need a healthy 5.8 and 4.10 gears for that. I also did a 5.8 swap with an upgraded cam and full exhaust in the same truck and that setup was far better than the 5.0.. especially when towing.

 

Same with my ‘89 F-150. It had a flat tappet camshaft but the block was already drilled and tapped for the spider bolts.

 

Some of the above info sure is incorrect about the coyote motors
I would surely do the coyote swap over any other for performance
The truck coyotes had have from 360 to 385 horsepower with variable valve timing and overhead cams
The cars Mustangs had have 460 horsepower and that would move a van nicely
A healthy? 5.8 has maybe 350 hp until you get serious with the build which would cost 5k to make 450 hp
No room for turbos or any of that heavy chit on a van hell headers will kill you to install or change the spark plugs!

 

OK hero... what was incorrect in yur opinion? You're not putting a Coyote into a '90s truck for anything less than $10-15k, so $5K for a 5.8 looks like a bargain.

 

Just which one is better is all

 

Does anyone know where I can find a wiring diagram of the PCM plug for my bronco?

 

All Data at the library for free
or A PCED book you might find like this