Ok,

I was trying to find the thread on here. Isnt there a way to run a GM motor 2.8 etc with a Isuzu Bell housing to a Toyota Tranny and t-Case? Or am i Crazy. If so whats the actual Combonation.

- Jason

i just went through this research phase and can find the thread but let me condense it for you.

GM engine with 60 degree bolt pattern will bolt to 96 or newer 5 speed from tacoma or 4 runner (R150F series C), via 99 or newer 2.5L dodge bellhousing. This trans comes equipped with a chain t-case so you have to buy the marlin adapter to bolt it to a toy gear driven case. This setup needs a toy clutch disc with GM flywheel and GM pressure plate. Throwout bearing, pilot bearing have to be customized to work. I'll be doing this next month so maybe we can figure out at the same time.

The other trans option is NV3550 from Jeep, but it is pricey $1000+, the AX15 from Jeep, pricey also and no adapter for Toy gear driven cases, or the Toy R151F from the 4 cyl turbo 87 pickup. very rare and expensive. I have heard however the R151F cannot use Dodge bell because it is a "short" input shaft trans and doesn't have the length the R150F has. The plus side of the R151F is it does not need an adapter to run toy gear driven cases. The W series Toy transmissions, along with all other 4cyl Toy transmissions excpet teh R151F are to be avoided because they were not built for V6 power.

With all that said I went with the first setup but still gathering parts to bolt it all together.

Hey Chris,

That sounds like alot of work but something that might be worth it to go to a crawler gear. I'm In the midst of bidding on a 78 LUV so we'll see how it goes. Thanks for the information.

Any posibilites on running a Isuzu Motor with toyota Cases behind it ?

- jason

you mean the one in the luv or a later motor? I have no idea what bolt pattern or even what engine are in those earlier isuzus.

The isuzu 3.2/3.5 engines have the 60 degree GM bolt pattern as well as the zu pattern. The combo above would work but input shaft length, input shaft bushing and throwout bearing size would all be custom too.

I think if you're running a Chevy 2.8L V6, then your other option would be using a Jeep 2.5L bellhousing to bolt up a Toyota W55-58 gearbox. That 2.8L is not going to hurt the Toyota W series tranny. Specifically, you also need a Camaro flywheel. Since the W55 input shaft is shorter than the Jeep bellhousing, the extra thick Camaro\Firebird 2.8\3.1\3.4 flywheel places the clutch disk back far enough to get total spline engagement. S10 flywheel won't work. It's too thin. Also, the 88 and later flywheel's have a neutral balance so you'll have to get the flyweel that matches your engine. Advance Adapters make an off the shelf pilot bushing that mates a GM size crank hole to a Toyo pilot size. It's also long enough to take up the distance for the short input shaft.

Greg

PS. CPOM, the Dakota bellhousing needed is the 96-00 2.5L.

Hey Gregg,

See that sounds like a better idea to me. To run a 2.8/3.1/3.4 motor Through the jeep 2.5 Bell housing. and a toyota w-55/58 tranny.

I do have a few questions about that set up. The first Being that you mention the 88 and later fly wheels have a neutral balance. so i should be looking to get a Fly wheel from a Camaro for the exact year of the motor. So does that mean i also use a Clutch from a Camaro/Fbird or do i need a clutch for a w55/58 tranny? Also will the w56 trans work that was in the pickups. Thanks for your help.

I'll have to update my notes about 96-00 bellhousing when I buy one, lucky I didn't buy one yet.

Yeah a 2.8 might be OK for a W56, but if you run a modded out 3.4 you will smoke a W56 trans. A W56 or any toyota trans for that matter is the same as a W56 in another model, like 4runner for instance.

I suppose it's a bit hard to believe that you can put all of this stuff together with junkyard parts... but you can. Please keep in mind that I haven't done this, but, I've picked, poked and taken measurments (and photos's) of a lot of things so I'll give you the jist of what I've learned.

1. A 2.5L Jeep Wrangler bell WILL bolt to a Toyota W or G series trans, but, like I said, the input shaft is fairly short. So... since the only flywheel you can use is the Camaro one, get the one that will work with your 2.8L. 87 and earlier... you need the externally balanced flywheel. 88 and later, you need the internally balanced flywheel. I've seen them on Ebay for $25.

http://www.jeeps-offroad.com/attachment.php?attachmentid=1049

2. You can use the GM pressure plate but you have to use a Toyota clutch disk. As you can see below, the Jeep bellhousing fits the 3.4L quite well.

http://www.jeeps-offroad.com/attachment.php?attachmentid=2284

3. I'm thinking that the best bellhousing to actually use is the 94 and later 2.5 version. It has an external slave cylinder and a clutch arm. Earlier versions have a hydraulic throwout bearing that won't fit the Toyota transmission. You may be able to fit this together with a stock Toyota throwout bearing, or, one from a Ford. Ford and Toyota use the same diameter throwout bearings.

Anyway, as you can see below, the Camaro flywheel is pretty thick and pushes the clutch back far enough to hook up completely with the Toyota W58 input shaft.

http://www.jeeps-offroad.com/attachment.php?attachmentid=2285

Also, you'll need the extra long AA pilot bearing to take up the slack.

http://www.jeeps-offroad.com/attachment.php?attachmentid=2287

So.., like I've said, I've never done this. As with anyone that pioneers anything, you're gonna have a GOOD TIME! <img src="/forums/images/graemlins/smile.gif" alt="" />

Greg

Manual or auto? Both can be done.

--Dan