Maxoverdrive.ca says it will be a 6-8 week wait and the price has gone up to around $4,400. Considering the torque curve on the D4BF (from Spencer's experience), the gear ratio in this truck would really not work so well for daily driving.
Does anyone know if the 3.55 rear diff from a MM would fit in the Montero from 86? Also, does the Starion front diff fit the Montero?
I found this information and it looks like between the 87 startion lsd and the MM 2wd rear diff they should fit the 86 Montero...???
TYPES OF DIFFERENTIALS
All trucks 79-96 came with what Mitsubishi would call a 8inch differential in the rear
D50/MMs came with 3 different possible gearing options
3.545 used in certain 2wd trucks let you achieve optimal fuel mileage
3.909 most common gear ratio used in about our trucks most 4x4 came with them for sure
4.222 rarely seen in the D50/MMs only seen so far in 4x4s so far primarily seen in Dodge Raiders/Mitsubishi Monteros
4.625 never came in the trucks only seen in the Monteros/Raiders swaps into our housings
LIMITED SLIP DIFFERENTIALS & IDENTIFICATIONS OF THEM
LSDs or different gears can be swapped out of various vehicle depending upon wich diff you have if you have the 7.5in diff a rear diff
out of any FOUR CYLINDER MM/D50, Montero/Raider will work
If you have a LSD factory you will have an orange sticker in the door jam and on the differential housing its self talking about the use of LSD additive inside of that housing If you cant find those stickers but still wanting to make sure you do or dont have an LSD you can jack the back of your truck up and spin one wheel then watch the other side to see if it spins in the same direction
Now if you have a 4x4 MM/D50 the rear differential out of a Starion/Conquest will work Starions 1983-1987 (1986/87 widebodies all came LSD, narrowbodies with LSD are more rare) used a 7.5" diff, which will work in the FRONT of a 4cyl truck/rig. Starions 1988-1989 used a 8.0" diff, which will work in the FRONT of a V6 truck/rig. (thanks Robert) If you have a V6 powered truck any first gen Montero/Raider with a V6 will change differentials with your trucks 2nd generation Monteros wont work with the 8in housing available in our trucks I was told the Monteros have a high pinion design compared to the trucks low pinion design
The Starion LSD from years 83-87 will fit the front diff of the 4cyl MM/D50 trucks/Monteros.
The Starion LSD from years 88-89 will fit the front diff of the 6Cyl MM/D50 trucks/Monteros.
The Montero LSD from 83-89 4Cyl will fit the 4cyl MM/D50 trucks rear diff.
The Montero LSD from 89-91 6Cyl will fit the 6cyl MM/D50 trucks rear diff.
Not all early Starions had LSD, special order and 85.5.
All widebody Starions had LSD.
Not all Montero's had LSD, check for orange sticker inside drivers door jamb.
just to clerify no truck or monty has a 7.5" rear diff.only the front is a 7.5".the rear is a 8".the 4 banger monty and the v6 has a 8" rear for the gen 1.the early years 7.5" starion lsd can be swaped into the front 7.5" diff,with a spacer.http://www.mightyram50.net/vbulletin/showthread.php/3283-7-25-front-differential-gears