More speed from a LT95? overdrive? highrange gearset?

[andrew e]

Is anyone running an overdrive on a LT95? will any handle the torque of an isuzu? I have heard of Fairleys snapping behind a stock 2a with a 2.25 petrol.

My other option is a new high range gearset recut to give 15% overdrive. Are these an off the shelf item in england? If i do have to get some made is anyone else interested in one?

I am sick of revving the tits off at 110 everyday and i dont want to go for a weaker box.

Andrew.

[Pullsy]

Andrew,
I have the following quote on my computer-

"the LT95 4 speed with 0.996 high range gears. Spoke to Mal and suggested doing up the LT-95 and changing the hi-ratio transfer case gearset to 0.996. That's exactly what I did and I'm happy with the result. Round 2100rpm at 100km/h."

I don't know where I got it from but the bloke talked about is Mal Storey from Brisbane who does the MaxiDrive axles. Don't know any more contact details for him than that but someone else on here should be able to give them to you. Sorry to be so vague- hope this helps,
Pullsy

[andrew e]

I have just had the box and transfer rebuilt with 0.996 high ratio and its still too low for my liking. Can't go any bigger in tyres as dont want to run any more than 35s on a daily driver.

Andrew

[Bush65]

Andrew,

I haven't come across any mention of 15% overdrive ratios for the LT95.

I wouldnt trust a fairy o/d with the isuzu. Besides their weakness, they are noisy and because all drive is transmiitted through them (not just when o/d is selected) you wiil go nowhere when they fail.

If you cant get those 15% o/d gears, you might look for an LT85.

[andrew e]

Andrew,
you might look for an LT85.

Been there, broke that!!!!

[up2nogood]

Diff ratios?

Probably the only thing left open to you. Unless you are running a four speed box ATM?

Then if low range ends up wrong, Maxi does crawler gears for the t-case.

[Aquarangie]

The later LT95's have a 1:1 high Range . My 83 is too tall now for the 3.5 and it struggles on hills bigtime especially with the 32 inch MT/R's!!

There are a few for sale in the Qld trading post recently and a couple od cheap ones, but you are flying blind into knwing what condition they are in though.

Trav

[GURU]

you have 1:1 high range and 3.54 diff ratio running 35's ? have I got that correct?

if so, how is it still too low?? normal problem is needing lower gearing to turn 35's

best solution for that is use a high range gearset from a Stage I or county LT95 (V8's) as they have 1.4:1 high range

[andrew e]

you have 1:1 high range and 3.54 diff ratio running 35's ? have I got that correct?

if so, how is it still too low?? normal problem is needing lower gearing to turn 35's

best solution for that is use a high range gearset from a Stage I or county LT95 (V8's) as they have 1.4:1 high range

Yeah still too low with 35s and 3.54s. Foot is almost flat to the floor doing 110. I travel 20kms along the freeway every day and the isuzu screams its tits off.

Wouldnt 1.4:1 gearsets make it slower?

Someone once told me you can get a different top gear ratio. Anyone else heard this?

Andrew

[isuzu110]

Andrew

The maths doesn't seem to add up. My Isuzu has the 0.996 hi range gearset and sits around the 2200 rpm at 100k. Not excessive.

What revs are you doing ?

[lowbox]

change out of low range

[ISUZUROVER]

Yeah still too low with 35s and 3.54s. Foot is almost flat to the floor doing 110. I travel 20kms along the freeway every day and the isuzu screams its tits off.

Wouldnt 1.4:1 gearsets make it slower?

Someone once told me you can get a different top gear ratio. Anyone else heard this?

Andrew

I don't see how the isuzu could be "screaming its tits off" at 120 with 35's 3.54 gears and 0.996:1 high range.

With that setup you would be doing 2300rpm at 110km/h. But if you haven't recalibrated your speedo for the 35's and are doing an indicated 110 on the speedo you will be doing 2600rpm.

My 110 with 3.9 ISUZU, LT85 (4th in an LT85 is the same ratio as 4th in an LT95), 3.54's and 33's will happily sit at 120 in 4th (Mal recommends that you drop down to 4th occasionally when highway driving with the LT85, so it re-oils the 5th gear bearings).

I have not heard of higher ratio gears for the LT95, besides the ones that you have. Your other options are the LT85 - which is pretty strong if you look after it - what broke on yours? Or to fit an isuzu truck gearbox (but would be a fair bit of work for the gearbox-Tcase adaptor.