Thread: 101 V8 bellhousings to R380

Originally Posted by 101 Ron

I noticed the big gap between 3rd and 4th gear with your 101 by both driving and following it.
My 101 doesnt have that gap.
Something is different and I do not know what it is.

I agree - I am tempted to pull the top plate off the tfr case and count teeth. Likewise in Abercrombie trip - I was often having to go into low range when you were able to stay in hi range. Also as you mentioned - are alternative gears available for the LT95 that could explain 3rd gear.

Garry

Originally Posted by Lotz-A-Landies

Thanks Ben

Ashcrofts page is enlightening, but it doesn't look like the short bell-housing will solve my problem as it is only 30mm less and I'm looking for 170mm.

Seems another solution is required.

Diana

I think you misunderstand Diana. That bellhousing is 30mm shorter than an LT77 SHORT Bellhousing. This is because the R380 is 30mm longer than an LT77.

You would save ~150mm as a rough guess. This is what a standard (long) R380 bellhousing looks like:


And a side-by-side comparison:

Originally Posted by garrycol

I agree - I am tempted to pull the top plate off the tfr case and count teeth. Likewise in Abercrombie trip - I was often having to go into low range when you were able to stay in hi range. Also as you mentioned - are alternative gears available for the LT95 that could explain 3rd gear.

Garry

LT95s came with the high range ratio options:

0.996:1
1.11:1
1.17:1 (FC101)
1.34:1

It is possible someone has fitted 1.11 or 0.996 ratios to yours, however you should notice the difference in all gears.

I don't believe there were any options for main box ratios.

EDIT2 - I just realised you have a fairey. I take it you didn't fit it? I suspect most would be 1.11:1 ratio???

This transmission is from a Dec 1994 build TDI300 defender.
IMG]http://i131.photobucket.com/albums/p299/101Ron/DSCF0842.jpg[/IMG]





It is a very low K spare I have.
gearbox measures 390mm end face to end face.
bell housing measures 259mm end face to end face.
Bell housing as stock is very long with alot of wasted space inside.

Hi Guys

Just to add my opinion to the gearing debate. I ran 0.996 gears and an overdrive on my 101 in the UK and as Garry says it's ok in ideal conditions. It's also worth noting that was on bargrips, I now run XZL's which are noticably taller.
Looking at the ratios in a range rover LT95 and a Range rover R380, the R380's are higher. Presumably due to the higher power developed by the later V8's.
I like the idea of putting an R380 in the 101 but agree with Ron the LT95 is a solid box and if Roverdrive come through with an overdrive I'll have all the gears I need.
Also I can't believe all these gearboxes people have lying around!

Originally Posted by 101 Ron

This transmission is from a Dec 1994 build TDI300 defender.

Don't want to sell it do you Ron???

No sale.......too hard to come by good R380s
I was lucky and unlucky to have it.
My defender was involved in front end smash and extensively damaged at the 60k mark.
the front diff moved back and broke the alloy bolt ears on the gearbox and transfercase housings.
With the repairs a complete new gearbox,diff and transfercase was fitted.
all the internals I will use to rebuild my current transmission if it ever gives trouble.

Originally Posted by isuzurover

LT95s came with the high range ratio options:

0.996:1
1.11:1
1.17:1 (FC101)
1.34:1

It is possible someone has fitted 1.11 or 0.996 ratios to yours, however you should notice the difference in all gears.

I don't believe there were any options for main box ratios.

EDIT2 - I just realised you have a fairey. I take it you didn't fit it? I suspect most would be 1.11:1 ratio???

Ron and I were wondering if there were different gear ratios available for the gearbox (know about tfr case) - my third gear seems a bit lower than other LT95s but other gears seem the same.

I have fitted the overdrive and it is a nice quiet specimen. Just haven't worked out the linkages yet - so it is the climb under to engage O/d for highway runs and climb back under for to take it out for around town and 4wding.

I think the o/ds are about .78:1.

Garry