Bronco II tranny swap

Ninersfan25 · Aug 13, 2011

I currently have a 89 BII with a mits fm 146 tranny. I found a m505D tranny from a 1994 explorer and was wondering if it will fit. Will any of the other parts fit on my BII from the explorer? I need tie rod ends and other things to fix my suspension and I could probably get the explorer for pretty cheap

Explorin94 · Aug 13, 2011

I would get the whole explorer and swap the drivetrain into your bronco....motor trans, front and rearends. The 94 has the Dana 35 front axle and the 31 spline 8.8 rear but still has drum brakes. But if all you want is the transmission then you will need to get everything including the flywheel.

Ninersfan25 · Aug 13, 2011

I would like to swap the whole drivetrain into my bronco at some point but right now I need it for transportation, so I would have to wait til later to swap the engine and the axles. Would I be able to put the trans in without any mods?

Ninersfan25 · Aug 13, 2011

Also, would I be able to keep the clutch bell housing from my fm 146 for the m50D?

adsm08 · Aug 13, 2011

Ninersfan25 said:
Also, would I be able to keep the clutch bell housing from my fm 146 for the m50D?

No.

The M5OD has a 1 piece case with integral bell housing. The 4.0 shares a bolt pattern with the 2.9 though, so it's not an issue. It will bolt right up to the back of your engine, no muss, no fuss.

Also, you don't NEED the 4.0's flywheel. I do recommend it. 4.0 flywheel, clutch, and starter for a 4.0 manual transmission. Basically a whole clutch job. It is a very nice setup.

The M5OD and FM146 are not identical but they are very very similar in length and setup and shouldn't need much modification.

dustedwatts · Oct 25, 2011

adsm08 said:
No.

The M5OD has a 1 piece case with integral bell housing. The 4.0 shares a bolt pattern with the 2.9 though, so it's not an issue. It will bolt right up to the back of your engine, no muss, no fuss.

Also, you don't NEED the 4.0's flywheel. I do recommend it. 4.0 flywheel, clutch, and starter for a 4.0 manual transmission. Basically a whole clutch job. It is a very nice setup.

The M5OD and FM146 are not identical but they are very very similar in length and setup and shouldn't need much modification.

So if i am reading right--- the m50d will bolt in, but need the clutch stuff, will the transfercase bolt on? what mods to drivelines will need done? Anything with shifter for trans? my t-case is electric.

Explorin94 · Oct 25, 2011

It is a direct bolt up to the motor. The transfercase will fit just fine. Use the shifter from the M5OD and all should be fine.

chrwilkins30 · Oct 25, 2011

tcase will bolt right up, no drive shaft mods, you don't have to get a 4.0 clutch but its beneficial, I didnt when i did the swap. but if i have the money for a new starter i would have.

Bronco II tranny swap

Ninersfan25

New Member

Explorin94

Active Member

Ninersfan25

New Member

Ninersfan25

New Member

adsm08

Senior Master Grease Monkey

dustedwatts

New Member

Explorin94

Active Member

chrwilkins30

New Member

Sponsored Ad

Sponsored Ad

Staff online

Members online

Today's birthdays

Member & Vendor Upgrades

Latest posts

Truck of The Month

Recently Featured

Follow TRS On Instagram

Latest Album Photos

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store

Sponsored Ad

Sponsored Ad

Sponsored Ad

Amazon Deals