I have a 4 speed trans in my 1980 BJ40. Have a chance of getting a trans from 1980 BJ60 will it be a direct mount? Many modifications?
Thanks!!
Thanks!!
1985 BJ 60 Trans in 1980 BJ40
- Thread starter Jersey Boy
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
- Thread starter
- #3
Sorry reposted it with correct info.
I have a 1980 BJ40 Man. Date Jan with the B motor.
Want to swap 1985 BJ60 5 speed trans.
Thanks
I have a 1980 BJ40 Man. Date Jan with the B motor.
Want to swap 1985 BJ60 5 speed trans.
Thanks
Ah, ok
1) Your shift tower is going to come up under the heater and you'll have to modify the trans tunnel. This can be solved by getting a shift tower top plate from a BJ42/5speed but they are very rare.
2) Your t-case won't work with the five speed, you'll need to get a split case from a five speed but not the 1985 one. The 1985 one will have a vacuum shifter and won't likely clear the frame. One from a 1983, or 1984 BJ60 or BJ42 would be fine as would a 1985 BJ70.
3) You'll lose your parking brake. The parts are available from a non North American application to put a parking brake on a split case but it is very rare and costly.
4) Your driveshafts will need to be modified. The rear one will be 3" shorter and the front 3" longer.
A lot of these problems can be overcome by moving the engine ahead 3" but that opens more cans of worms.
1) Your shift tower is going to come up under the heater and you'll have to modify the trans tunnel. This can be solved by getting a shift tower top plate from a BJ42/5speed but they are very rare.
2) Your t-case won't work with the five speed, you'll need to get a split case from a five speed but not the 1985 one. The 1985 one will have a vacuum shifter and won't likely clear the frame. One from a 1983, or 1984 BJ60 or BJ42 would be fine as would a 1985 BJ70.
3) You'll lose your parking brake. The parts are available from a non North American application to put a parking brake on a split case but it is very rare and costly.
4) Your driveshafts will need to be modified. The rear one will be 3" shorter and the front 3" longer.
A lot of these problems can be overcome by moving the engine ahead 3" but that opens more cans of worms.
- Thread starter
- #5
Well thats out then. I drive a lot on the highway and I want to put a 5 speed in the 1980 BJ40 I have. I am looking for the best way to do this. I would put a NV4500 in there but know one makes the bell housing for the diesels?
Any suggestions or know where I can locate a five speed trans. Live in US so hard to come by here.
Thanks
Any suggestions or know where I can locate a five speed trans. Live in US so hard to come by here.
Thanks
Cheapest solution would be to buy some bigger tires ( rubber overdrive ) or some 3.7 gears for the diffs.
Then, if you miss your low first gear, swap an H41 trans in. Its still a four speed but with a ~5:1 first gear. Direct bolt in if you get the right one.
I've driven a lot of four speed Land Cruisers though and frankly, I'd just let it scream.
Then, if you miss your low first gear, swap an H41 trans in. Its still a four speed but with a ~5:1 first gear. Direct bolt in if you get the right one.
I've driven a lot of four speed Land Cruisers though and frankly, I'd just let it scream.
- Thread starter
- #7
So if I get a trans from a 1985 BJ70 this will be a straight fit?
Do I need to buy the transfer case with it?
Will the parking brake be ok with the 1985 BJ70?
Jack
Do I need to buy the transfer case with it?
Will the parking brake be ok with the 1985 BJ70?
Jack
- Thread starter
- #9
Sorry now I now why it says rookie next to my name.
What will I have to buy if I buy a 1985 bj70 transmission with the transfer case?
I cannot use either trasfer case?
Thanks for your trouble.
What will I have to buy if I buy a 1985 bj70 transmission with the transfer case?
I cannot use either trasfer case?
Thanks for your trouble.
1) Your shift tower is going to come up under the heater and you'll have to modify the trans tunnel. This can be solved by getting a shift tower top plate from a BJ42/5speed but they are very rare.
2) Your t-case won't work with the five speed, you'll need to get a split case from a five speed but not the 1985 one. The 1985 one will have a vacuum shifter and won't likely clear the frame. One from a 1983, or 1984 BJ60 or BJ42 would be fine as would a 1985 BJ70.
3) You'll lose your parking brake. The parts are available from a non North American application to put a parking brake on a split case but it is very rare and costly.
4) Your driveshafts will need to be modified. The rear one will be 3" shorter and the front 3" longer.
The only item the BJ70 trans will address is #2
you still have 1, 3 and 4 to solve
2) Your t-case won't work with the five speed, you'll need to get a split case from a five speed but not the 1985 one. The 1985 one will have a vacuum shifter and won't likely clear the frame. One from a 1983, or 1984 BJ60 or BJ42 would be fine as would a 1985 BJ70.
3) You'll lose your parking brake. The parts are available from a non North American application to put a parking brake on a split case but it is very rare and costly.
4) Your driveshafts will need to be modified. The rear one will be 3" shorter and the front 3" longer.
The only item the BJ70 trans will address is #2
you still have 1, 3 and 4 to solve
- Thread starter
- #11
Thanks
Ok, I did this very thing a few years back, 85 bj60 drive train ( I took the 3b as well) into a 79 bj40.
the shifter thing isn't that big of a deal, just cut a new hole, in the trans tunnel and bend the shifter a bit, or find another trans cover from a newer 40 or 42 and cut it, but the only real clearance issue is with the shifter in reverse or second, it can hit the seats, so it's just a bend if forward deal.
my 85 bj60 didn't have a vaccuum shifter so I didn't have that problem?
parking brake, there's ways to do a disc parking brake on the back of a split case, or you could find a bj42 rear end that has a parking brake.
or, put it in anyways, and deal with the parking brake some other time....( like in my case, maybe 6 years later, tho I havent' actually done it yet...)
driveshafts will need messing with. shortening is not a big deal, lengthening can be, tho you can often get away with putting the slip yoke end of a minitruck driveshaft on,as the extra length of the slip yoke with sometimes get you the length you need. cheap and easy, may require redrilling of the pinion flange.
the shifter thing isn't that big of a deal, just cut a new hole, in the trans tunnel and bend the shifter a bit, or find another trans cover from a newer 40 or 42 and cut it, but the only real clearance issue is with the shifter in reverse or second, it can hit the seats, so it's just a bend if forward deal.
my 85 bj60 didn't have a vaccuum shifter so I didn't have that problem?
parking brake, there's ways to do a disc parking brake on the back of a split case, or you could find a bj42 rear end that has a parking brake.
or, put it in anyways, and deal with the parking brake some other time....( like in my case, maybe 6 years later, tho I havent' actually done it yet...)
driveshafts will need messing with. shortening is not a big deal, lengthening can be, tho you can often get away with putting the slip yoke end of a minitruck driveshaft on,as the extra length of the slip yoke with sometimes get you the length you need. cheap and easy, may require redrilling of the pinion flange.
- Thread starter
- #13
I am wondering why on the SOR site it says 5 speed trans and transer case for bj40, bj60 and bj 70?
Item # 066500b.
I guess the brake kit you are talking about is item #066500ab-kit.
My bj40 was made in January of 1980 so the break kit I believe would be the correct one.
I talked with them on the phone and they told me that it would go right in?
Thanks again!!!
Item # 066500b.
I guess the brake kit you are talking about is item #066500ab-kit.
My bj40 was made in January of 1980 so the break kit I believe would be the correct one.
I talked with them on the phone and they told me that it would go right in?
Thanks again!!!
Read the fine print!! SOR does NOT include the top cover with the tranny usually, you buy that extra.
- Joined
- Dec 8, 2006
- Threads
- 158
- Messages
- 2,974
- Location
- Greenfield, MA
- Website
- thecarpentryway.blogspot.com
I'll chime in, though previous posters have made most of the points already.
If your truck came out of Australia, it will likely have the transfer case-mounted parking brake. It's easy to tell - just follow the rear driveshaft up to the transfer and see what it connects to at the u-joint flange. If it connects to what looks like a little drum brake, then you have the parking brake. Or, you could trace the parking brake cable from the lever and see if it goes to the transfer or to the rear axle.
The five speed H55-F is essentially the same looking unit as the four speed H41/H42, with the principal difference being that an extra casing is bolted to the back of the case to accommodate the 5th gear (and the ratios are different, but that's not so important here). That extra casing adds 9 cm of length to the transmission, which is why the drive shafts will need re-configuring - not a big deal.
What is a bigger deal is that this extra length of the 5-speed casing pushes the whole works very close to the rear cross-member. It also makes for a more severe departure angle for the rear drive shaft.
The 1980 trucks did not have the split case, and the transmission was attached differently to the chassis then the later 40s. The 5-speed is made to work with a separate support member, so if you want to go with a 5 speed, you will need to obtain a later 40 series cross member, or obtain a 60 series cross-member and modify it. Welding will likely be involved.
The top loader plate on the 5-speed places the shift lever stick further back - as Seapotato said, this means that the shifter cane can run into the front edge of the seats in 2nd and 4th. All that is needed to make this work is:
-heat and re-bend the shifter cane a little bit forward so that it clears.
-the shifter cover plate in the cab floor will not work with the 60/70 series top loader without modification. The holes in the plate need to be re-located rearward. There was a 40 series with the 5-speed, that have a different top loader which fits the tranny cover plate perfectly, but there top loaders are, as I read once, "rarer than rocking horse s***". So, don't worry about that.
The other issue with transfer cases is that the early one (1981~1984) have a smaller idler shaft and different gear ratio than the later transfer cases. The ramification of this is that an early type transfer needs to go with an early type 5 speed, and vice-versa.
And you will need a transfer with mechanical shifting, not vacuum shifting.
clear as 'Mud?
Take some pictures of your current set up and post them so we can see exactly what you have to work with.
In the meantime, check out this thread by poser, where he retrofits a 5-speed into an FJ40 - this will give you a pretty clear idea as to what is involved:
https://forum.ih8mud.com/40-55-series-tech/139889-h55-splitcase-into-02-79-40-series.html
Here's another thread that might be of interest:
https://forum.ih8mud.com/40-55-series-tech/188665-h55f-transmission-78-bj40.html
Although it sounds complicated, the 5-speed conversion isn't too difficult for those with fabrication skills and equipment, patience and some $$$ Otherwise, rubber overdrive is the way to go.
If your truck came out of Australia, it will likely have the transfer case-mounted parking brake. It's easy to tell - just follow the rear driveshaft up to the transfer and see what it connects to at the u-joint flange. If it connects to what looks like a little drum brake, then you have the parking brake. Or, you could trace the parking brake cable from the lever and see if it goes to the transfer or to the rear axle.
The five speed H55-F is essentially the same looking unit as the four speed H41/H42, with the principal difference being that an extra casing is bolted to the back of the case to accommodate the 5th gear (and the ratios are different, but that's not so important here). That extra casing adds 9 cm of length to the transmission, which is why the drive shafts will need re-configuring - not a big deal.
What is a bigger deal is that this extra length of the 5-speed casing pushes the whole works very close to the rear cross-member. It also makes for a more severe departure angle for the rear drive shaft.
The 1980 trucks did not have the split case, and the transmission was attached differently to the chassis then the later 40s. The 5-speed is made to work with a separate support member, so if you want to go with a 5 speed, you will need to obtain a later 40 series cross member, or obtain a 60 series cross-member and modify it. Welding will likely be involved.
The top loader plate on the 5-speed places the shift lever stick further back - as Seapotato said, this means that the shifter cane can run into the front edge of the seats in 2nd and 4th. All that is needed to make this work is:
-heat and re-bend the shifter cane a little bit forward so that it clears.
-the shifter cover plate in the cab floor will not work with the 60/70 series top loader without modification. The holes in the plate need to be re-located rearward. There was a 40 series with the 5-speed, that have a different top loader which fits the tranny cover plate perfectly, but there top loaders are, as I read once, "rarer than rocking horse s***". So, don't worry about that.
The other issue with transfer cases is that the early one (1981~1984) have a smaller idler shaft and different gear ratio than the later transfer cases. The ramification of this is that an early type transfer needs to go with an early type 5 speed, and vice-versa.
And you will need a transfer with mechanical shifting, not vacuum shifting.
clear as 'Mud?
Take some pictures of your current set up and post them so we can see exactly what you have to work with.
In the meantime, check out this thread by poser, where he retrofits a 5-speed into an FJ40 - this will give you a pretty clear idea as to what is involved:
https://forum.ih8mud.com/40-55-series-tech/139889-h55-splitcase-into-02-79-40-series.html
Here's another thread that might be of interest:
https://forum.ih8mud.com/40-55-series-tech/188665-h55f-transmission-78-bj40.html
Although it sounds complicated, the 5-speed conversion isn't too difficult for those with fabrication skills and equipment, patience and some $$$ Otherwise, rubber overdrive is the way to go.
- Thread starter
- #16
So if I have this right. If I get a 1985 5 speed trans with transfer case out of bj0.
To put in on my January 1980 BJ40 with B motor.
1) Make sure trans does not have vacum shifter?
How can you tell by looking at it the trans is in BC I am here in NJ and will have to tell him how to check.
2) Ask him for the cross member also so I can use it on the BJ40 I saw on one of your attachments that it should bolt right in. I own a full service machine shop and have welder if needed.
3) purchase split case brake kit. (I live on a hill and have three little ones)
4) I can heat up and move stick with what I have in the shop.
5) Am I going to also need new clutch set up?
6) Cutting hole to move back shifter should not be a problem.
7) The length of the new shafts I can make on the lathe I would think?
Anything I am forgetting here!!!
To put in on my January 1980 BJ40 with B motor.
1) Make sure trans does not have vacum shifter?
How can you tell by looking at it the trans is in BC I am here in NJ and will have to tell him how to check.
2) Ask him for the cross member also so I can use it on the BJ40 I saw on one of your attachments that it should bolt right in. I own a full service machine shop and have welder if needed.
3) purchase split case brake kit. (I live on a hill and have three little ones)
4) I can heat up and move stick with what I have in the shop.
5) Am I going to also need new clutch set up?
6) Cutting hole to move back shifter should not be a problem.
7) The length of the new shafts I can make on the lathe I would think?
Anything I am forgetting here!!!
- Thread starter
- #17
By the way my truck is out of Canada!!!
You will NOT need the crossmember. The BJ40 uses a crossmember under the bellhousing while the '60 uses a crossmember under the tranny. Keep the old bellhousing and use that crossmember. You will need to check driveshaft clearances though.
The narrower BJ40 frame will make using the '60 crossmember awkward anyways.
the 5 speed crossmember is quite different from the 4 speed, it has that big dip in it so the driveshaft can clear, I used the 60 crossmember in my 40, and again in my 45, cutting an inch or so off each end and moving the crossmember brackets on the 40 back till they lined up with it.
so you could probably go either way. bearing in mind if you add much lift to the truck ever, the front driveshaft to crossmember clearance could be a problem with the 4 speed crossmember.
so you could probably go either way. bearing in mind if you add much lift to the truck ever, the front driveshaft to crossmember clearance could be a problem with the 4 speed crossmember.
- Thread starter
- #20
How do I tell if the trans has a vaccuum shifter on it or does not. I need to tell the guy I am buying it from to check.
Thanks
Thanks