5 Speed ?'s (1 Viewer)

[mrhankey]

I am considering a 5 speed swap for my 83 FJ60, appreciated some of you weighing in. Today heard about the 5 speed that Advanced Adaptors has. Any experiences with this swap?
thanks,

 

[Dirty Toad]

Maybe I am ignorant of your needs for the 83, but I have an 87 and needed no adaptor to go from a 4 speed to the 5. Just got an H55 and tossed it in. Straight bolt on with the pluging of one hole (info on the hole plug can be found on just about any 5 speed install thread)

Good luck, you will love it!

 

[Bomar]

You will need a newer bell housing. I would use a toyota bell housing instead of AA. Call cruiserparts.net and find out the price for a 87 bell housing.

 

[cruiser_guy]

You will need a newer bell housing.

???????

You need driveshaft length mods, the bellhousing should be EXACTLY the same as the tranny case for the H55 is EXACTLY the same as an H42 with the exception of the additional length on the back.

 

[Elbert]

not an expert on this, but I believe the later year model trucks have some type of spacer in the trans that the early model trucks did not have. I bought my transmission through American Toyota, talk with Dan, he will know what you will need. You can find them easily via google search.

 

[zuluzeugma]

???????

You need driveshaft length mods, the bellhousing should be EXACTLY the same as the tranny case for the H55 is EXACTLY the same as an H42 with the exception of the additional length on the back.

correct!


I'm not sure hes not talking about the NV4500 you can buy straight from AA.

Your choices:

H55F - Toyota 5-speed, .84 OD, slightly lower 1st gear too IIRC, expensive, but a very easy swap. (slightly more time consuming since you have a pre-spacer tranny currently.)
NV3550 - .78 OD, 4.01 1st gear. Came stock in some jeeps and half ton dodge trucks. Generally considered the weaker brother of the:
NV4500 - .73 OD, 5.61 1st gear (6.34 if you have the chevy version), stock in chevy and dodge 3/4 and 1 tons from 93-99ish when it was replaced by its 6-speed brother, the NV5600.

There are a few other 5 speed swaps that are possible. These three are the most common. GL and welcome to MUD

 

[lehiguy]

I have done both the Toyota H55F that I ran behind a 2F and later a 350, and the NV4500 behind that same 350. The H55F DOES NOT require a different bellhousing. The later bellhousings (marked 3F) rotated the entire gearbox to the passenger side in order to achieve the same rear driveline angle that the shorter four-speed boxes had, but they have the same bolt pattern and pilot pattern. In fact, just this last April I helped a friend install my old H55F into his "83 FJ60. You will need to shorten your rear driveline and lengthen the front. There are plenty of threads about what needs to be done if you are retaining your old T-case. The NV4500 is an excellent, heavy duty gearbox, but only makes sense if you are going to swap out the entire drivetrain. Otherwise, you are buying three expensive items, the tranny itself, a bellhousing adapter and a T-case adapter. Additionally, the 2F may have difficulty pulling it's taller overdrive ratio. If you see a V8 in your future, maybe that is the way to go, but you will end up buying yet another bellhousing.

 

[zuluzeugma]

I have done both the Toyota H55F that I ran behind a 2F and later a 350, and the NV4500 behind that same 350. The H55F DOES NOT require a different bellhousing. The later bellhousings (marked 3F) rotated the entire gearbox to the passenger side in order to achieve the same rear driveline angle that the shorter four-speed boxes had, but they have the same bolt pattern and pilot pattern. In fact, just this last April I helped a friend install my old H55F into his "83 FJ60. You will need to shorten your rear driveline and lengthen the front. There are plenty of threads about what needs to be done if you are retaining your old T-case. The NV4500 is an excellent, heavy duty gearbox, but only makes sense if you are going to swap out the entire drivetrain. Otherwise, you are buying three expensive items, the tranny itself, a bellhousing adapter and a T-case adapter. Additionally, the 2F may have difficulty pulling it's taller overdrive ratio. If you see a V8 in your future, maybe that is the way to go, but you will end up buying yet another bellhousing.

Everything he said is 100% correct...

Folks have run the nv4500 behind a 2F succesfully long term. If you have a worn out 2F, you're only going to use 5th gear going downhill. 1st gear is AWESOME for offroad though.

 

[lehiguy]

I"ll chime in again with praise for the H55F. I bought a used one and put it behind a healthy 350 and drove it for 100K miles. It always shifted smoothly and I never hurt it with the extra HP and torque of the V8. Very sturdy gearbox, great ratios for the 2F. I liked the 4.9:1 first gear better than I liked the OD, the four-speed box's 3.5:1 first gear ratio was pretty lame. Now it's on a new journey in my friend's rig. FTR, I'd take the H55F anyday over the stupid NV3500 or NV3550. These fail on a regular basis when used with V8s and are not as sturdy as the H55F and do not have as deep a first gear ratio. Stay away from these.

 

[GulfShoresFJ60]

With the 83 bellhousing you will have to grind on the bellhousing where the input shaft goes through it. It is only a matter of 1/4". Here is a thread regarding what has to be ground including a picture. https://forum.ih8mud.com/60-series-wagons/173601-4spd-h55-transmission-question.html

 

[lehiguy]

That's the first I ever heard of that. Was there a non-USA component there, like a Diesel something or other? I've done two H55F installs and they were both cake walks with no grinding at all.

 

[GulfShoresFJ60]

If you have the earlier bellhousing it needs to be ground. The bellhousing that came with the H42 w/Spacer I believe is fine.

I know I had to grind mine otherwise it would not seat and bolt tightly. I know this because I tried it with the bellhousing separate from the engine.