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Hey guys, just doing a little research here. I am putting a Geo Tracker engine and automatic transmission in my Samurai. While researching this, I learned that the Isuzu 4L30E is based off of the Trackers 3L30 transmission. So I am thinking that I can use a 2.8 Isuzu engine and mate it to the Tracker transmission using an Isuzu bellhousing. How is this engine? Is it the same as a Chevy 2.8? Any other engines use the 4L30E transmission? Also, this may interest you guys. I am not sure what you guys have for options for T-case gears, but the transmissions also appear to share the same tail housing. If this is so, there is an adapter to mount a Toyota T-case to a Tracker transmission that could be used on this transmission. There is also an adapter to install a Toyota T-case to a Tracker T-case (which you could bolt to a Isuzu transmission) giving you a dual T-case set-up. Just something to think about.
 

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Welcome. I'm pretty sure all the tranny internals are very similar, but the bell housing are all different. My S10 Chevy with 4.3 v6 has the same tranny as the trooper as well, but it's different as well so I'm betting it won't be a drop in for you. GM had a concept tracker that had a 4.3 v6 stuffed in a 2door soft top tracker so anything can be done, but it will be custom. What mods are you doing to your tracker? I had a sidekick once. If it was not too small I would still have it cause it was a great truck. Some pics of it: http://www.conman.8k.com/ warning pop-up ads on this site cause it's a free hosting place. Sorry.

Good Luck,
Con
 

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Yep. It is pretty disturbing that many of us own an upgraded Chevy Chevette tranny :oops: :roll: :shock: !!! The 4L30E is just an old GM TH-180C (3L30) tranny with a 4th gear & full electronics added. The 4L30E is by no means a heavy-duty tranny because of it's light-weight internals, but they still give a good long service life with regular ATF changeouts (atleast every 20-30Kmi). DEFINATELY add a quality cooler if you plan to do any towing with one.
G/luck
Joel
 

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