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Old December 9th, 2009, 12:40 PM   #1
garemo
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4.3 in yj

i am scraping the idea of a diesel in my jeep...for now anyways and am thinking about a 4.3 vortec i hear these are good engine conversions for a yj wrangler i am wondering what i would have to do as far as the drivetrain goes i currently have a 2.5 in it and its getting pretty old. i am asking what transmissions will bolt up to the 4.3 but still be able to bolt up to the np 231 i hope this question isn't confusing any help will be greatly appreciated. thanks
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Old December 9th, 2009, 12:50 PM   #2
BigBlockBlazer
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Get a complete S10 driveline and bolt it in. They're cheap and the t-case is the same side drop as the Jeep stuff. Good upgrade in power and strength, the 5 speed is a pretty good trans.
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Old December 9th, 2009, 01:22 PM   #3
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ok thanks for the info i appreciate it thats what i was thinking of there r a few rusted out s10s in flint that i might look at
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Old December 9th, 2009, 01:22 PM   #4
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Originally Posted by BigBlockBlazer View Post
Get a complete S10 driveline and bolt it in. They're cheap and the t-case is the same side drop as the Jeep stuff. Good upgrade in power and strength, the 5 speed is a pretty good trans.
Good advice, but I have to ask why? You gain no horsepower over the 4.0 and 30 ft-lbs of torque. For all that trouble, wouldn't a V8 be the way to go? Just asking, not flaming.
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Old December 9th, 2009, 01:25 PM   #5
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Good advice, but I have to ask why? You gain no horsepower over the 4.0 and 30 ft-lbs of torque. For all that trouble, wouldn't a V8 be the way to go? Just asking, not flaming.
I don't think the 4.0 drivetrain bolts up to the 2.5 stuff so it would be about the same work and expense, personally I would do the V8 swap. No problem on the flaming, just trying to answer the v6 question.
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Old December 9th, 2009, 03:56 PM   #6
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i was thinking about it but i did some research the 4.3 gets better gas mileage when its in a wrangler plus i can get a 4.3 for a very good price. also i wouldnt have to do much to my jeep just make motor and tranny mounts and a couple other things. originally i was going to put a 4 cylinder aircooled duetz diesel in it thats got more hp than a 350 but that is gonna be on hold for awhile because of money and etc
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Old December 9th, 2009, 04:02 PM   #7
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If you want to put a nice 4.3 in it I got one with vortec heads and is .060 over needs put together.
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