Outer Limits 4x4 Board

Need to know the high and low of the LT 95 T-case to figure out my ratios.\
It is a 4 speed manual

Thanks

LT95 low same as LT 230 - 3.32:1

High ratio can vary - but probably 0.998:1 or 1.2:1 in a rangie.

Have a look on John (Red90's website for the full range of ratios).

ISUZUROVER wrote:LT95 low same as LT 230 - 3.32:1

High ratio can vary - but probably 0.998:1 or 1.2:1 in a rangie.

Have a look on John (Red90's website for the full range of ratios).

Ben

How can I know if mt LT 95 is 0.998:1 or 1.2:1
It is an 1983 RR with 4 speed manual so I assumed LT 95

The 1984 RR that came out with a 5 speed manual was it an LT 95 as well?

The Rangie 5 speed would have been the LT77.

Do you have a tachometer? If so, drive in 4th (cause we know it is 1:1) and measure speed (best by GPS) versus engine speed. Tell us your tire size and we can figure out the high range ratio.

Other than that I don't know. It should be in a RR workshop manual, but I have not read one from that era. I think they were 1.11:1.

red90 wrote:The Rangie 5 speed would have been the LT77.

Do you have a tachometer? If so, drive in 4th (cause we know it is 1:1) and measure speed (best by GPS) versus engine speed. Tell us your tire size and we can figure out the high range ratio.

Other than that I don't know. It should be in a RR workshop manual, but I have not read one from that era. I think they were 1.11:1.

How does the LT 95 compare in strength to the LT 77 or LT 230

LT 77 is the gearbox model (like mine, 5 speed with reverse up to the left), LT230 is the transfer case model. From memory, LT 230 is the transfer bolted to all the gearboxes from LT77 to late R380? Just with slightly different internals and ratios along the way.

According to my haynes manual, early LT95s were 1.174 high range, 3.321 low, later ones 1.113 with same low range. Doesn't say how to distinguish the two though, but since your rangie is an 83, I'm guessing it would be late, since the LT77 appeared in 84.

Overall ratios according to haynes manual:
Low:
1st - 47.83:1
2nd - 28.78:1
3rd - 17.69:1
4th - 11.76:1
Rev - 43.07:1

High:
1st - 16.03:1
2nd - 9.64:1
3rd - 5.93:1
4th - 3.94:1
rev - 14.43:1

As far as strength of the LT95 goes, they have a reputation for being pretty bulletproof, beyond their tendency to siphon oil from transfer case to gearbox (or vice versa, don't remember which). Can be fixed with a return tube. Far as evidence of strength goes, I know someone running 37 inch super swampers, with front and rear maxis (standard ratios), and a strong 4.4, he still runs a standard 4 speed, has done for a long time, and hasn't blown it up.

As Tom (RagingRover) said, the LT77 is a gearbox and was only used with the LT230 T-case.

The LT95 is a one-piece gearbox and T-case, and very strong (probably the strongest box LR ever used). Unless you have a tag with the high renge ratio on the back of the T-case section, it is most reliable to work it out for yourself. Depending on engine compression ratio and model year, the LT95 rangies had either 0.998:1, 1.113, or 1.174.

If you want lower high range, there are also 1.4:1 and I think 1.6:1 ratios available.

The T-case is the weak point in the LT95 (but still pretty strong) - but this can be strengthened with a conversion to taper roller bearings and a few of the other modifications that the australian military versions had. The LT95 is still in use in all australian military land rovers - the last new ones were made in the early-mid 90's (the LR factory had to re-tool to make LT95's again!!!).

Tom thanks for giving out the overall crawl ratios. I assume these are caculated on 3.54 CR&P.
Can you give me the seperate gear ratios as I intend to run different CR&P(Rover 4.7)

Jay

According to the Range Rover manual, all lt95 transfer cases had a 3.321:1 Low range ratio.
Gearboxes with the suffix number "A & B" had a 1.174:1 high range, suffix "C" has 1.113:1, suffix "C" from gearbox no. 355 94060 C has 1.123:1, Prefix "12C" has 0.996:1.
Hope you can understand all that, good luck