Diffs
All Australian 60 Series Landcruisers came with full floating axles with a ratio of 4.11
There is an axle code located on the VIN plate. This will be one of;
K082, K083, K084 or K085
K= 9.5" diff
08 = 4.11 diff ratio (37/9)
2 = Open diff, 2 spider gears
3 = Limited slip diff, 2 spider gears
4 = Cable locked diff
5 = Limited slip diff, 4 spider gears
Gearbox and Transfer Case
Gearbox options on Australian 60 Series Landcruisers; H41 4 Speed Manual, H55f 5 Speed Manual and A440F 4 Speed Automatic.
All models had the split transfer case. The transfer case was manually (lever) operated until 1985 and vacuum operated thereafter.
H41 Gear Ratios
1st - 4.843:1
2nd - 2.619:1
3rd - 1.516:1
4th - 1:1
Rev - 4.843:1
H55F Gear Ratios
1st - 4.843:1
2nd - 2.619:1
3rd - 1.516:1
4th - 1:1
5th - 0.845:1
Rev - 4.843:1
A440F Gear Ratios
1st - 2.95:1
2nd - 1.53:1
3rd - 1:1
4th - 0.717:1
Rev - 2.67:1
2 Piece 'Split' Transfer Case
Low Range: 1.959:1
Automatic models from 1987 had a ratio of 2.29:1
Towing Rating Capacity
Unbraked = 750kg
Braked = 1500kg or 2500kg (or 3400kg?)
The tow rating/capacities of the various 60 series models across the years is confusing, due mostly to the fact that towing ratings were not supplied by vehicle manufacturers nor really cared about in the early to mid 1980's. Even then towing ratings didn't appear to be a large concern.
Early years
Up until mid 1985 there was no specified towing rating given to the 60 series. A factory option at the time was a 2000kg rated tow bar, so clearly Toyota deemed that the 60 Series Cruisers were capable of towing at least this weight. The picture here is from the 1983 Toyota Landcruiser Accessories brochure.
Mid 1985 - 1987 1500kg
In mid 1985 it became a requirement for vehicle manufacturers to supply a tow rating to vehicles. Toyota seemed to take an overly cautious approach to this as they specified the towing rating for the 60 Series to be 1500kg. The picture below is from a 1986 Landcruiser brochure.
1987 On 2500kg
From 1987 on the towing rating of the 60 series was specified by Toyota to be 2500kg. This is the most widely accepted tow rating of the 60 series across the board. It would appear to be backed up by the fact that the current tow bar made by Hayman Reese, the largest towbar manufacturer in Australia, is rated at 2500kg. The image below is from the 1989 Landcruiser GXL brochure.
3400kg? Hayman Reese also made a 3400kg tow bar for the 60 series however it is no longer available. Some states specify that if the vehicle manufacturer does not specify a tow rating then that tow rating shall be 1.5 times the unladed mass (tare) of the vehicle. Given that 60 series models tare weight varied between 1900 - 2200kg this would imply a tow rating of between 2850kg and 3300kg depending on the exact model/variant. This would be dependant on the tow bar being rated at that amount as well. Seek advice from your states transport authority for more info.
