Series 3 stage 1 gearbox conversion

[Scozzzy]

Could anyone recommend what would be the best 5 speed gearbox to install on the series 3 stage 1 landrover to replace the LT95, would it drop the revs much at 100kph.
Also, has anyone done the power steer conversion and is it a big job, can anyone recommend a company to buy the power steer kit from? Cheers, Scotty

[Vern]

First up, whats your budget?

Choices that are available that i'm aware of are,
R380
Isuzu MSA/MXA
Tremec tr4050

[101RRS]

First up, whats your budget?

Choices that are available that i'm aware of are,
R380
Isuzu MSA/MXA
Tremec tr4050

Also from the LR stable - LT77 and LT85.

[Vern]

Also from the LR stable - LT77 and LT85.Lt77 not behind a 4bd1 though.
Lt85 yes, but why of why[emoji1]

[101RRS]

Lt77 not behind a 4bd1 though.
Lt85 yes, but why of why[emoji1]

Well the mistake both of us made was firstly not asking the OP what engine were we talking about [bigrolf].

You assumed diesel - I assumed V8 [bigwhistle]. The fact he wants revs reduced at 100kph indicates a V8 to me.

Of course the OP should have made that clear.

[Vern]

Well the mistake both of us made was firstly not asking the OP what engine were we talking about [bigrolf].

You assumed diesel - I assumed V8 [bigwhistle]. The fact he wants revs reduced at 100kph indicates a V8 to me.

Of course the OP should have made that clear.No mistake on my behalf, I know he has an isuzu from another post he made. [emoji1]

[101RRS]

No mistake on my behalf, I know he has an isuzu from another post he made. [emoji1]
Thats cheating [bigsad] - you can only respond to the information provided in the thread.[biggrin]

[Scozzzy]

Sorry Guys, i should have mentioned in my original post that the stage 1 I have got is the Isuzu 4BD1 motor with the 4 speed box. I am trying to find the strongest 5 speed box that I can get to go behind that motor to drop the revs down substantially when it is sitting on a 100kph as it is screaming its lungs out and is as noisy as…

Also, has anyone done a power steer conversion to one of these and what company did you use. The only good thing is i don’t need to go to the gym after taking it for a drive :-). Cheers, Scotty

[1984V8110]

[QUOTE=Scozzzy;3146351]Sorry Guys, i should have mentioned in my original post that the stage 1 I have got is the Isuzu 4BD1 motor with the 4 speed box. I am trying to find the strongest 5 speed box that I can get to go behind that motor to drop the revs down substantially when it is sitting on a 100kph as it is screaming its lungs out and is as noisy as…

At the risk of asking a stupid question - are you sure that your LT95 box has the Isuzu High range gears? It sounds like you may have the lower transfer case ratio from a V8? Is it possible that the box has been swapped in from a V8 at some stage?

Apologies if you've checked this possibility, but the description of the engine 'screaming' sounds strange.

Michael

[TimNZ]

I've got a Stage One V8, and have looked at fitting a R380/LT230 and LT85/LT230, neither will fit without modifying the seatbox and floor. The R380 is too tall in the back and hits the seat box, the LT230 hi/low casing hits the floor/seatbox.
The output flanges of the LT230 are fairly close to where they are with the LT95, within 25mm from my quick measurements.

Hope this helps,

Tim

R380/LT230 on the left, LT95 on the right.

178483

[Vern]

First of all, how deep are your pockets??? It all starts there

[JDNSW]

[QUOTE=Scozzzy;3146351]Sorry Guys, i should have mentioned in my original post that the stage 1 I have got is the Isuzu 4BD1 motor with the 4 speed box. I am trying to find the strongest 5 speed box that I can get to go behind that motor to drop the revs down substantially when it is sitting on a 100kph as it is screaming its lungs out and is as noisy as…

At the risk of asking a stupid question - are you sure that your LT95 box has the Isuzu High range gears? It sounds like you may have the lower transfer case ratio from a V8? Is it possible that the box has been swapped in from a V8 at some stage?

Apologies if you've checked this possibility, but the description of the engine 'screaming' sounds strange.

Michael

Good point - the Isuzu may be an aftermarket conversion that did not include changing high ratio. I have no problems wanting a higher ratio in my 110 Isuzu with LT95 - it is quite pleasant at 110kph, and "screaming" is not a description I would have thought of. However, I would comment that sound proofing is a lot better on the 110 than Stage 1, including a noise deadening rocker cover.

[steveG]

The 4BD1 and LT95 from an '81 Stage1 that I put in my county had the 1.3:1 high range ratio in it from memory.
Pretty sure it was a genuine.

If you're just after lowering the revs at 100kmh and the LT95 is in otherwise good condition just get hold of some .996 high range gears and fit those. Much easier than a 5 speed conversion, and you don't even have to pull the box out to change them.
Add a turbo and some 255/85's and you'll be pleasantly cruising at about 2000rpm (quite a big drop from the 2600ish that you'll be doing now if you've got the 1.3 gears).

Steve