L52 Transfer removal

[spyathe]

hey guys my name is karl,

i have an l52 gearbox behind a GM 5.0l V8 in an isuzu trooper.

had i realised the L52 was the weakest 5speed fitted to a hilux i would have gone another route...but i didnt...and i broke it

i have nothing but 4th gear (direct drive) so im guessing iv buggered the lower shaft.

my problem is that due to the size of the motor/gearbox is that i cant remove the gearbox without lifting the motor and move it forward, i wanted to know if its possible to remove the transfer case beforehand?

id love to upgrade to a w56 or R151F...but due to the small trooper tunnel, size is a big issue

so theres my issue, do i put another l52 behind it or do i cut out the tunnel and make another one around it with a stronger gearbox?

thanks heaps guys
Karl

 

[Combat Chuck]

Step one would be to sell the GM motor to the nearest crabbing boat in need of an anchor...

The t-case can be dropped easily. It's bolted to an aluminum adapter between the cast-iron section of the tranny and the t-case itself, and all the shifters go into this adapter section.

You have to pull the snap-ring holding the t-case shifter in place, and remove it, because it's a forward-shifting setup, then just undo the bolts between the adapter and the t-case.

 

[KLF]

Drain it first! (in case you didn't know this)

 

[Combat Chuck]

Drain it first! (in case you didn't know this)

My bad. I forgot to mention this.

As far as your transmission quandry, it's up to you, but I would rather rework some sheetmetal to accommodate a stronger Aisin transmission than run a GM trans.
R150/151 are stronger, AX15 is another option.

 

[pappy]

The R-series would be the stronger of the bunch. The Toyota transfer case is held on by six bolts.

 

[spyathe]

Theres nothing wrong with the motor haha. It spat out 220hp on the dyno which is more than plenty for the sub 2ton trooper i have difficulty with traction in 3rd gear. How far does the t-case need to move back to clear the shafts?would it be less than the input shaft clearing the clutch? troopers have a brace right at the back of the output shaft which stops me from moving the box back far enough to clear the clutch

 

[pappy]

How far does the t-case need to move back to clear the shafts?

2.375" ... give or take.

 

[Combat Chuck]

My recommendation is to have the L52 rebuilt.
They're good transmissions, but need some work. A machine shop can clearance the housing to accept a larger input bearing, and the stock gears are straight-cut, and robust.