4.0 bronco??

[twoll86]

what might i run in to to do this in a 89 b2 just curios cause im looking @ getting a bronco 2 and was wondering can i use the trans from the 2.9 its a 5 speed?

 

[stegomon]

yes yyou can. evan the why pipe...plug and play swap....check out the tec page on 4.0 swaps...this has been talked to death

 

[Beanmachine7000]

You CAN, but most everyone will not recommend it... It might last a week behind a 4.0, if you're lucky...

 

[fastpakr]

Bean, if he's got a Mazda in that 89 (not unlikely) it'll hold up just as well behind the 4.0 as the original 4.0 trans would.

 

[CJREX]

And the swap on an '89 is not quite Plug and Play.

There are about 12 wires underhood that will have to moved in the harness and an additional wire ran from the passenger side to the driver side (oil pressure gauge), plus you will need the Explorer fuel lines from the fuel filter forward.

On a '90, I think it is practically Plug and play. I know the fuel lines are.

As far as your trans, check the label on the door.

If your trans code is "M", congratulations! You have the M5OD.

 

[stegomon]

well my swap was on a 90 ranger and i replaced the whole harness under the hood....unbolted the harness on the fire wall

 

[fastpakr]

CJRex, you sure about the 89 being different? I thought 89 and 90 were both plug and play, and that things got more interesting from 88 back.

 

[mjonesjr]

The '90 BII is the only year it is a plug and play swap. CJREX is correct, there is a couple wires that are different under the hood on the '89.

 

[twoll86]

thanks for the info i read the tech page but its not 89/90 specific and wanted to know what i would be getting in to since i would be using this truck a daily driver

 

[BigClemsonFan]

Just to pile on, he's right about the 89 not being plug and play. Can't remember the exact number of wires, but 12 sounds about right.

 

[fastpakr]

How dare you not defend me when I'm wrong.

 

[CJREX]

If you decide to do the 4.0, send me a PM with your email addy and I'll send you the Word doc I used for my swap wiring. (4.0 into '89 Ranger)

I got it from another member on here and it was invaluable.

Since it helped me, I'm glad to pass it on if someone needs it.

 

[Beanmachine7000]

Bean, if he's got a Mazda in that 89 (not unlikely) it'll hold up just as well behind the 4.0 as the original 4.0 trans would.

True... But, every single '89 BII I've looked under had an FM146 and not an M50D-R1... I've looked for a 2.9 M50D-R1 forever...

 

[CopyKat]

Wireing isn't the only issue to deal with. 90 is the only year they changed the fitting locations for the fuel. The 90 B2 uses the same setup the the 4.0L's did.

There are some wire differences that need to be changed around. they did move some pins from one plug to another. If your good at de-pinning the plugs and moving the wires then you can do a more professional job.

 

[BlackBII]

I have done an '89 BII 4.0 swap and a '90 BII 4.0 swap, the 90 was truely plug and play, minus the reverse lights, but that's no biggie. On the '89, Yeah, about 12 wires and the fuel line back to the filter sounds right...