Kerr

so im looking at my option on new motor, anyway ran across a motor trans set up but it has a trubo 400. so what do you have to fo to get the Transfer case to work with a trubo 400.

my next question is at what torque level does the ring and pinion / axles strat to have problems.

thanks
shawn

kyle_22r

don't think there's any adapter to a TH400 tranny to a toy case. they do make them for the TH350, 4L60E and 700R4 trannies though

crash

They do, but only for the LC 10 and 16 spline t-cases, nothing for a mini truck t-case... The TH400 though is a very desirable tranny as it can handle ALOT of abuse...

Kerr

thanks guys, this is what im thinking about, a company we insure parts out salvage trucks, big trucks ups size and rigs, even trains... they guy there has a like 500 bread turcks, little smaller than ups or fedex. anyway he said he would hook me up on the hole truck. they have the cummins diesel but its a 4 cylinder, with the turbo 400 trans, i think he said they are 220 ci.

joez

I would suggest passing on the 4bt/th400. The th400 is a non-lockup slushbox and the 4bt in a breadvan is governed to 2200 rpm. Plus it sucks a lot of hp. If he has that many breadvans, look for the 4bt/SM465 combo. You still wont have an overdrive, but at least it would be "locked up", plus you get the ultra deep first gear, and the ability to mate to a toy case.

If you could get more than one of those combos, pm me, im having a heck of a time finding a good one by me.


As long as you dont turn up the 4bt to much, axles will survive. Factory rating is only 105hp and 285 ft-lbs. With pump adjustments, an intercooler, 4" exhaust, and a 12cm turbo housing, you can push it to arround 200 hp and be nearing 500 ft-lbs. If you do any adjusting, though, make sure you have a good set of guages.

The front end you will be replacing ball joints and bearings like crazy, though. even though it is only a 3.9L I-4, it still weighs in over 750 pounds. It is significantly heavier than a 6.2, which is heavier than a BBC. The 4bt is a 6bt, with 2 cyliners lopped off. Literally. they do have balancing problems, and vibrate a lot. Even if you get one with the two counterbalance shafts(which isnt a breadvan 4bt), still expect it to rattle any bolts that were not torqued on properly loose. Most all of the performance parts that work on a 6bt work on a 4, but instead of needing 6, you only need 4.

Kerr

man that is a lot of info. after reading all that i think for my purpose it might just go back with the 22RE. Didnt toyota make a small diesel for these trucks

joez

They sure did, actually, there were several different ones available over the years. The only problem is getting ahold of one, as very few have been imported to the US.

kyle_22r

toyota still sells diesels in their trucks, just not in the US in fact, most of them are diesel in other places

the motors of interest to look for in the US are the 2L and 2L-T(more desirable since it's turboed so more power). they were available in '84-85 trucks here. there's also an L engine, but i don't know much about them. i mostly see trucks from '82-83 or so with them(not too many)

the 2L will bolt right up to your motor mounts, trucks equipped with them used a W56 transmission so your tranny should work. you do need the bellhousing from the diesel though, as it has a different bellhousing-to-engine pattern than the 22RE bellhousing.

toy283

L's were used in '82-'83 (very rare, except in Canada I hear)
2L's were used in '84-'85 (most common year/diesel in U.S.)
2L-T's were used in '85-'86 (not common but they're out there)

kyle_22r

you know, i've only ever seen 1 diesel 4x4 here, it was an '84 with a "2.4D" badge on the pillar(like where it would say EFI on an injected truck, right below "toyota"). most of the ones here are the '82-83 2wds, but it probably has something to do with the close proximity to canada