(Work in progress, tossing this out as I have some time in an Uber this morning 
)
So you want to swap a H55F 5-Speed transmission into your 4x or 6x Series?
Why? Well, 5th gear and a lower 1st gear. New smooth transmission and the split t-case. The H55F features a 15.5% overdrive (0.845:1 in 5th gear) versus the 1:1 of the J30 (3spd manual) & H41/H42 (4spd manual). It also features a much deeper 1st gear than most Cruiser manual transmission options for better get up and go as well as control and finesse offroad.
(future trans ratio chart coming)
We offer fully assembled and customized H55F/Split T-case combos here:
cruiserteq.com
Those combo's include the H55F (several options available), the transfer case (several options available), and can include the necessary 5-speed specific shift lever, knob, hardware, flanges, etc. In addition, you will need these items for your year/model:
Early FJ40 w original J30 3-Speed Transmission & 1-Pc T-Case
Bellhousing (requires a 4/5 speed Bellhousing)
Factory frame cross-member mods
Custom cross-member to support H55F
Floor/Trans Cover mods
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot
Driveline length mods
Speedo cable replacement or extension (new cable preferred)
Park Brake mod*
75-80 FJ40 with original H41/H42 4-Speed Transmission & 1-Pc T-Case
Floor/Trans Cover mods
Custom cross-member to support H55F
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot
Driveline length mods
Speedo cable replacement or extension (new cable preferred)
Park Brake mod*
xx/80-xx/1985 FJ40 (originally equipped with Split T-Case)
Floor/Trans Cover mods
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot
Slight modification to stock trans cross-member for front driveline clearance.
Driveline length mods
Frame cross-member relocation (if retaining/using t-case mounted park brake)
*8/1982-10/1982 34mm transfer cases have a unique input gear/seal arrangement and lack oiler cup provisions. Using a 10/1982+ or new t-case is recommended
8/1980-xx/1985 FJ60 with H42 "Short" Transmission
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Driveline length mods (shorten rear shaft & lengthen front shaft)
*08/1980-10/1982 34mm transfer cases have a unique input gear/seal arrangement and lack oiler cup provisions. Using a 10/1982+ or new t-case is recommended
xx/1985-xx/1987 FJ60 with H42 "Long" Transmission
Direct Fit!
1988-1990 FJ62 originally equipped with A440F Automatic Transmission
Bellhousing (requires a 4/5 Speed Bellhousing)
Flywheel
Clutch Assembly (CL7487KIT)
Cross-member mods
Floor/Trans Cover mods
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot (option to switch to manual shift 2WD-4WD shift linkage)
Driveline length mods
Clutch Pedal Addition
Clutch Master, Slave, Hard Line & Hose
Minor wiring modifications
Short vs Long H42
The original H41/H42 "short" was replaced with the "long" variant in xx/1985. As with all things, there can be overlap so it is always best to inspect what you have. The long variant is very easy to identify by the presence of a 'spacer' between the back of the transmission and the transfer case itself. This housing is where the 5th gear setup resides in the H55F. In order to maintain parts compatibility in later Land Cruisers, Toyota added the spacer to the 4spd to match the length of the H55F 5-speed. This allowed items such as drivelines, wiring harnesses, etc to be universal regardless of the 4 or 5 speed trim.
Bellhousing & Crossmember Variants
Toyota utilized several different 4/5spd bellhousings and they are not all equal. The early 40 Series 4spd bellhousing will have rear motor mounts on the side, this can be extremely useful for mocking up the setup in an FJ40 as the mounts will work for the 3 or 4 speed frame. The late FJ4x and all FJ6x bellhousing will not have these additional mounts. The 80+ bellhousings come in several varieties, clocking of the transmission as it releates to the engine changes and the crossmember will need to match the bellhousing you source. Options/pairs include 8/1980-10/1984, 11/1984-07/1987 and non-US variants.
Park Brake Solutions (applicable to the 40 & 55 Series)
The standard H55F/Split-Case combo does not have a t-case mounted parts brake as found on the original. There are a handful of options:
1. Move the park brake to the axle. This can be done by using later model or modified rear axle equipped with the park brake or adding a disc brake conversion with the park brake feature. This will require a custom park brake cable.
2. Convert the back of the split t-case to a factory park brake drum setup found on the 4x/6x in non-US applications. This will also require a longer custom park brake cable. This requires a new T-Case rear output shaft (Part# TCSHFT3623160031), a Split T-case specific 19-Spline park brake drum (Part# PB60030) and a drum brake specific Split T-Case rear output bearing retainer (not currently available new - Email for availability). You will then use your existing t-case mounted park brake backing plate, hardware and shoes (all from a 1-Pc case). This will require a custom park brake cable application.
3. Convert the back of the split t-case to an aftermarket disc park brake setup sourced from Colorado based TSM. This will require custom park brake cable modifications.
Which Split-Case will work?
There are 50+ split transfer case variants used by Toyota. Major changes include low range ratio and vacuum 2WD-4WD shift versus manual 2WD-4WD shift. It's important to note that not all BF1 cases are setup to run behind a 5 speed due to their lack of provisions to add the 5th gear oiler. This small plastic device collects oil as it splashes around and funnels it into the back of the transmission assembly.
( Setting up the H55F in my 1972 FJ40, circa 2002. Same transmission has never skipped a beat
)
( Setting up the H55F in my 1972 FJ40, circa 2002. Same transmission has never skipped a beat )
)So you want to swap a H55F 5-Speed transmission into your 4x or 6x Series?
Why? Well, 5th gear and a lower 1st gear. New smooth transmission and the split t-case. The H55F features a 15.5% overdrive (0.845:1 in 5th gear) versus the 1:1 of the J30 (3spd manual) & H41/H42 (4spd manual). It also features a much deeper 1st gear than most Cruiser manual transmission options for better get up and go as well as control and finesse offroad.
(future trans ratio chart coming)
We offer fully assembled and customized H55F/Split T-case combos here:
OEM H55F Transmission & T-Case Assembly - Fits 1958-1990 Land Cruiser With Modifications (H55FCOMBO)
Land Cruiser OEM H55F Transmission & T-Case Assembly
cruiserteq.com
Those combo's include the H55F (several options available), the transfer case (several options available), and can include the necessary 5-speed specific shift lever, knob, hardware, flanges, etc. In addition, you will need these items for your year/model:
Early FJ40 w original J30 3-Speed Transmission & 1-Pc T-Case
Bellhousing (requires a 4/5 speed Bellhousing)
Factory frame cross-member mods
Custom cross-member to support H55F
Floor/Trans Cover mods
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot
Driveline length mods
Speedo cable replacement or extension (new cable preferred)
Park Brake mod*
75-80 FJ40 with original H41/H42 4-Speed Transmission & 1-Pc T-Case
Floor/Trans Cover mods
Custom cross-member to support H55F
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot
Driveline length mods
Speedo cable replacement or extension (new cable preferred)
Park Brake mod*
xx/80-xx/1985 FJ40 (originally equipped with Split T-Case)
Floor/Trans Cover mods
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot
Slight modification to stock trans cross-member for front driveline clearance.
Driveline length mods
Frame cross-member relocation (if retaining/using t-case mounted park brake)
*8/1982-10/1982 34mm transfer cases have a unique input gear/seal arrangement and lack oiler cup provisions. Using a 10/1982+ or new t-case is recommended
8/1980-xx/1985 FJ60 with H42 "Short" Transmission
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Driveline length mods (shorten rear shaft & lengthen front shaft)
*08/1980-10/1982 34mm transfer cases have a unique input gear/seal arrangement and lack oiler cup provisions. Using a 10/1982+ or new t-case is recommended
xx/1985-xx/1987 FJ60 with H42 "Long" Transmission
Direct Fit!
1988-1990 FJ62 originally equipped with A440F Automatic Transmission
Bellhousing (requires a 4/5 Speed Bellhousing)
Flywheel
Clutch Assembly (CL7487KIT)
Cross-member mods
Floor/Trans Cover mods
Transfer Case Shift linkage (Part# TCSCSHFTKIT avail @ CruiserTeq.com)
Transfer Case Floor Boot (option to switch to manual shift 2WD-4WD shift linkage)
Driveline length mods
Clutch Pedal Addition
Clutch Master, Slave, Hard Line & Hose
Minor wiring modifications
Short vs Long H42
The original H41/H42 "short" was replaced with the "long" variant in xx/1985. As with all things, there can be overlap so it is always best to inspect what you have. The long variant is very easy to identify by the presence of a 'spacer' between the back of the transmission and the transfer case itself. This housing is where the 5th gear setup resides in the H55F. In order to maintain parts compatibility in later Land Cruisers, Toyota added the spacer to the 4spd to match the length of the H55F 5-speed. This allowed items such as drivelines, wiring harnesses, etc to be universal regardless of the 4 or 5 speed trim.
Bellhousing & Crossmember Variants
Toyota utilized several different 4/5spd bellhousings and they are not all equal. The early 40 Series 4spd bellhousing will have rear motor mounts on the side, this can be extremely useful for mocking up the setup in an FJ40 as the mounts will work for the 3 or 4 speed frame. The late FJ4x and all FJ6x bellhousing will not have these additional mounts. The 80+ bellhousings come in several varieties, clocking of the transmission as it releates to the engine changes and the crossmember will need to match the bellhousing you source. Options/pairs include 8/1980-10/1984, 11/1984-07/1987 and non-US variants.
Park Brake Solutions (applicable to the 40 & 55 Series)
The standard H55F/Split-Case combo does not have a t-case mounted parts brake as found on the original. There are a handful of options:
1. Move the park brake to the axle. This can be done by using later model or modified rear axle equipped with the park brake or adding a disc brake conversion with the park brake feature. This will require a custom park brake cable.
2. Convert the back of the split t-case to a factory park brake drum setup found on the 4x/6x in non-US applications. This will also require a longer custom park brake cable. This requires a new T-Case rear output shaft (Part# TCSHFT3623160031), a Split T-case specific 19-Spline park brake drum (Part# PB60030) and a drum brake specific Split T-Case rear output bearing retainer (not currently available new - Email for availability). You will then use your existing t-case mounted park brake backing plate, hardware and shoes (all from a 1-Pc case). This will require a custom park brake cable application.
3. Convert the back of the split t-case to an aftermarket disc park brake setup sourced from Colorado based TSM. This will require custom park brake cable modifications.
Which Split-Case will work?
There are 50+ split transfer case variants used by Toyota. Major changes include low range ratio and vacuum 2WD-4WD shift versus manual 2WD-4WD shift. It's important to note that not all BF1 cases are setup to run behind a 5 speed due to their lack of provisions to add the 5th gear oiler. This small plastic device collects oil as it splashes around and funnels it into the back of the transmission assembly.
( Setting up the H55F in my 1972 FJ40, circa 2002. Same transmission has never skipped a beat
)( Setting up the H55F in my 1972 FJ40, circa 2002. Same transmission has never skipped a beat
)
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