compatible/desirable gearboxes - v8

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
top drive

top drive

Well-Known Member
Posts
2,694
Location
Peoples republic of culter
so i need a new gear box for my project to do it "right"

i have 2 lt77s - ones a 4cyl diesel bellhousing and input shaft

the other is a v8 input and bellhousing out of a disco 1 so the sticks are backwards.

I also bought a conversion plate off dr evil on here for the existing LT77 and then read the input shafts have a different number of splines/teeth on them so im guessing that even as a short term fix the 3.5 will not mate to my 4cyl diesel box.

the LR is a ninety and the engines a 3.5 on twin SUs out of a 1990 disco 1 - stock internals so not masses of torque or power but more than the 2.5TD in there.

what gear boxes should i be looking for. LT77 v8 long shifters the obvious choice. r380 ? lt85 ? any of the autoboxes worth looking at or are they a nightmare to retrofit ?

any of them better than others ?
 
top drive said:
so i need a new gear box for my project to do it "right" ........
I also bought a conversion plate off dr evil on here for the existing LT77 and then read the input shafts have a different number of splines/teeth on them so im guessing that even as a short term fix the 3.5 will not mate to my 4cyl diesel box.......
Click to expand...
Use a clutch plate with the correct splines and they should fit.
 
Cheers for that shifty

well that gives me an option then to get my self rolling on my current chassis and have a new chassis made up with the correct mounts once i ensure all my engines a goodun and i have the correct box

my current bulkhead needs attention anyway - if im honest ill probably be looking to pick up an ashtree galvanised one long term when i do the chassis , do it once do it right. so hacking it up to make the manifolds fit doesnt worry me too much
 
ive been offered an lt77 out of a range rover fairly locally

would this work ? - unsure if its long or short stick at the moment , would this matter as long as the transfer and shift levers were in the right location ?

thanks

terry
 
I'm toying with this idea too as I might have just gotten hold of a free R380 for my series, in which case I'll be cutting the seat box and welding on an extension onto the shift lever with a support which should hopefully bring it back into a useable area
 
defenders did use a similar box as rrc long stick ,with engine against rad ,like 300 tdi r380 it sits slightly further forward than lt77 on a 4 cylinder,but obviously could be set in 4 cylinder postion with engine slightly back than lr postion of v8,rrc short stick like disco box has gear stick straight out of rear of box instead of taken forward by an extension housing as defenders or long stick rrc
 
Dr_evil said:
I'm toying with this idea too as I might have just gotten hold of a free R380 for my series, in which case I'll be cutting the seat box and welding on an extension onto the shift lever with a support which should hopefully bring it back into a useable area
Click to expand...

I didnt think yu could use defender/disco boxes in a series, as the boxes gave permanent 4wd and series dont have CV joints? :confused:
 
you fit a kit in lt230 diff which comes with free wheeling hub kit for def or disco this makes it rear wheel drive until diff lock is engaged or fit a series transfer box conversion kit to lt77,or remove diff planet gears and weld rear sun gear in diff housing
 
ok james so i dont gain anything from getting a short stick RR box as i already have a disco lt77

if its long stick its quids in.

madhatman , im sure i read you could modify a disco box to work in a series by changing some parts, think it was on LR4x4 but i cant find it now. was when i was googling for info on what boxes i could use.
 
jamesmartin said:
you fit a kit in lt230 diff which comes with free wheeling hub kit for def or disco this makes it rear wheel drive until diff lock is engaged or fit a series transfer box conversion kit to lt77,or remove diff planet gears and weld rear sun gear in diff housing
Click to expand...


I should have said "as standard".
 
jamesmartin said:
you fit a kit in lt230 diff which comes with free wheeling hub kit for def or disco this makes it rear wheel drive until diff lock is engaged or fit a series transfer box conversion kit to lt77,or remove diff planet gears and weld rear sun gear in diff housing
Click to expand...

I've got free wheeling hubs on mine currently so would it work as it is if I changed the diff ?
 
Dr_evil said:
I've got free wheeling hubs on mine currently so would it work as it is if I changed the diff ?
Click to expand...
not tried it in theory it might,but might still knock when cornering worth a go before seat box is refitted,def free wheel kit ,you dont use hub parts just the bit that goes in center diff that replaces planet gears ,
 
jamesmartin said:
not tried it in theory it might,but might still knock when cornering worth a go before seat box is refitted,def free wheel kit ,you dont use hub parts just the bit that goes in center diff that replaces planet gears ,
Click to expand...

Hmmm well I will return to this if I get the R380, might dump it into a different project though as I've got the entire uni workshop to play with :D
 
perhaps james or someone can answer this

while looking for a v8 box on the bay of evil

i found a conversion plate like the one dr evil sold me.

it had a "spigot converter" with it ....the middle bit in the photo..

mines afaik wont have this ..... do i need it if i decide to use it with my existing box ?

$(KGrHqFHJBcE+N1!PWidBQTe(cWYK!~~60_12.JPG
 
You must log in or register to reply here.

Similar threads

K
200TDI Gear Ratio
Replies
5
Views
563
300bhp/ton
300bhp/ton
dag019
A question of gearboxes
Replies
16
Views
3K
Skolmate
Skolmate
D
v8 Thor shoe horn into my 1985 Defender
Replies
5
Views
1K
resto_d1
R
M
1.6 lt230
Replies
4
Views
991
lynall
L
R
Ex military 90 soft top 1994 - 300TDi conversion
Replies
7
Views
1K
ChristopherDailey
C
Back
Top