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  #1  
Old May 27th, 2014, 04:34 PM
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LT95 Advice

So I am asking this question here mostly because I don't know where else to ask it and figure you folks might have some advice.

I have a Series 1 with an LT95 gearbox and transfer case. It shifts pretty well, but not great..........it suffers from a couple of issues that seems (based on limited research) to be somewhat common.

The syncro on 2nd gear seems to have shit the bed, mostly when downshifting from 3rd to 2nd and on occasion makes a difficult transition from 1st to 2nd. Double Clutching fixes the problem on the way back down, but is somewhat of a pain. In addition to the syncro issue 3rd gear feels a little crunchy on the way up from 2nd........on occasion, perhaps 1 out of every 3 shifts.

So, this has me thinking about options. First off, I am not going to attempt to fix this myself (unless someone blows my mind and tells me how easy it is). There seems to be a guy in the southwest that rebuilds them and I have found his name in several threads here. I could pull the box and mail it to him for repair, but since I am in SC by the time I ship it there and back I am into pretty good money. I have not found anyone on my side of the country within reasonable driving distance to have them take a look at it.

Or, I could search for a working used one and just do the swap. I suppose I roll the dice on the swap options only because I am taking someones word for it.

I am looking for adivce I guess..............something like, "if it were me I would do this......".

Anyone have any idea what a rebuild is running, ball park?

Anyone have any idea what a used one is running, ball park?

Thanks,

Will
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  #2  
Old May 27th, 2014, 04:41 PM
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Trey has a 62k mile lt95 in his 83 110 he would like to sell to finance an auto swap, Quiet known low mileage unit still in the truck and can be driven to make certain it suits.
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Old May 27th, 2014, 04:47 PM
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If it is in a series 1, I am guessing it is a short bellhousing 101 forward control LT95 so the 110 LT95 won't work. Why don't you post up some pictures of it.

If it were me, I would change the fluid and consider the issues part of the experience or I would DIY fix it or send it to roadside rob.
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Old May 27th, 2014, 04:47 PM
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Who is Trey?

------ Follow up post added May 27th, 2014 04:51 PM ------

Quote:
Originally Posted by evilfij View Post
If it is in a series 1, I am guessing it is a short bellhousing 101 forward control LT95 so the 110 LT95 won't work. Why don't you post up some pictures of it.

If it were me, I would change the fluid and consider the issues part of the experience or I would DIY fix it or send it to roadside rob.

I'll have to look and see, I will try and post up some pictures of the box but it might be a few days........it's an 88" S1.

I just changed the oil last weekend with no change in shifting. I am all about the experience, but am also "all about" things working correctly especially if it's something I plan on keeping for a long time.
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Old May 27th, 2014, 05:22 PM
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If it were me I would...wait, I did send my LT95 to Rob D in ABQ and I would do it again if I were to keep the LT95. You don't say what engine you have; however, I presume it is a rover V8. If the LT95 is close to dead, you might want to consider converting to an R380/LT230.
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Old May 27th, 2014, 05:29 PM
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Quote:
Originally Posted by Contractor View Post
Who is Trey?
My 19yr old son.
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Old May 27th, 2014, 05:46 PM
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It's mated to a 3.9L Rover V8.
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Old May 27th, 2014, 06:04 PM
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Quote:
Originally Posted by Contractor View Post
It's mated to a 3.9L Rover V8.
they were only ever bolted to rover v8's and Isuzu diesels
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  #9  
Old May 27th, 2014, 07:51 PM
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What oil have you tried? A lube designed for manual trannies might help.

Otherwise rebuild it yourself, get it rebut or buy a rebuilt one.
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Old May 27th, 2014, 08:47 PM
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Quote:
Originally Posted by Red90 View Post
What oil have you tried? A lube designed for manual trannies might help.

Otherwise rebuild it yourself, get it rebut or buy a rebuilt one.
It takes 20W50 Motor Oil, which is what I used.
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Old May 27th, 2014, 09:14 PM
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Yes I know what they specified back then but there are better lubricants available now that are designed for better synchro action.
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Old May 27th, 2014, 09:22 PM
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Quote:
Originally Posted by Red90 View Post
Yes I know what they specified back then but there are better lubricants available now that are designed for better synchro action.
Ok, so I have read a good many oil debates on what to use regarding the LT95. What oil is better designed for the LT95?
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Old May 27th, 2014, 10:08 PM
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If you are in the States then I would use Redline MT-90. It should be your best choice. The synchros could be too far gone, but it is with a try.
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Old May 28th, 2014, 09:22 AM
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"Series I" or "Stage One"? "3.9" or :3.5"?

I am not sure where you are located but Doug/Trey's used gearbox in central Virginia is probably a solid bet. This is especially true if you have a Stage One w/3.5.

If you have a Series I in a non-factory configuration with a 3.9 and LT95 then I would lean in the direction of the other advice and start looking at 5 speed gearboxes.

From what I have read - the LT95 is a pretty strong and reliable gearbox. I know if your oil is too thick (I mistakenly used 90wt one time) your gear changes are miserable until the gear box is well and heated up (thinned oil). With the good correct fluid (50wt engine oil) if shifts correctly. But - it sounds like you got the lube thing already figured out.
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Old May 28th, 2014, 01:23 PM
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Quote:
Originally Posted by Uncle Douglas View Post
Trey has a 62k mile lt95 in his 83 110 he would like to sell to finance an auto swap, Quiet known low mileage unit still in the truck and can be driven to make certain it suits.
If you check your broke ass voice mail I believe you already have a call on this....
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Old May 28th, 2014, 02:02 PM
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Quote:
Originally Posted by ranewman View Post
If you check your broke ass voice mail I believe you already have a call on this....
Fedex just dropped my new phone off Newman, sitting @ the kitchen table synching it now. Will call your boy Cosmo. Until it's sold its for sale....
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  #17  
Old May 28th, 2014, 09:03 PM
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Quote:
Originally Posted by Firemanshort View Post
"Series I" or "Stage One"? "3.9" or :3.5"?

I am not sure where you are located but Doug/Trey's used gearbox in central Virginia is probably a solid bet. This is especially true if you have a Stage One w/3.5.

If you have a Series I in a non-factory configuration with a 3.9 and LT95 then I would lean in the direction of the other advice and start looking at 5 speed gearboxes.

From what I have read - the LT95 is a pretty strong and reliable gearbox. I know if your oil is too thick (I mistakenly used 90wt one time) your gear changes are miserable until the gear box is well and heated up (thinned oil). With the good correct fluid (50wt engine oil) if shifts correctly. But - it sounds like you got the lube thing already figured out.
It's a 1957 Series 1 with a 3.9 Liter Rover V8 and an LT95. I have the oil figured out.........I hear what Red is saying, but I just don't think MT-90 is going to solve my issue.

I honestly have no idea if it came out of a 101 or a longer truck, I will look but have not had a chance. I think it's safe to assume that since it's an 88" truck that the shorter BH makes sense.

Anyway, I really appreciate all of the replies.

Here it is:

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Old May 28th, 2014, 09:18 PM
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Quote:
Originally Posted by JSBriggs View Post
Ahhh, So your the one with Dennis' old S1!

-Jeff
Yes

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Old May 28th, 2014, 10:03 PM
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I have an LT95 with a Fairey OD coming out in a few weeks if you're interested.
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Old May 28th, 2014, 10:18 PM
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Just snap a pic of the bellhousing and we should be able to tell. I don't know how easy/hard it is to swap input shafts to make a longer one a shorter one but that might be an option if you don't want to spend a lot. IE buy a good used 110 LT95 and put your input shaft and bellhousing on it. On an R380 you have to do a lot of tear down to do that, but I don't know on an LT95.
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