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Old 09-03-2006, 11:09 PM   #1
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V8 conversion for 2000 TJ

I have a 2000 TJ with 32000 miles and I am sick and tired of the 4 banger. Looking to swap in V8 probably ford 302. Has anyone done this? Is there a supercharger made for the 4? I am looking for advice.

Thanks

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Old 09-03-2006, 11:35 PM   #2
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Go back! It's a trick.

Are you doing all the labor yourself? Unless you have a cheap donor vehicle with most of what you need, and are doing the work yourself, you are going to spend a ton of cash. Better to sell the 4 banger and look for a v8 that someone else has already sunk all that money into that they will never get out of it.

My humble opinion.

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Old 09-04-2006, 12:13 AM   #3
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Quote:
Originally Posted by Dare2BSquare
Go back! It's a trick.

Are you doing all the labor yourself? Unless you have a cheap donor vehicle with most of what you need, and are doing the work yourself, you are going to spend a ton of cash. Better to sell the 4 banger and look for a v8 that someone else has already sunk all that money into that they will never get out of it.

My humble opinion.

You said a mouthful there my friend. I don't even want to admit what it cost me to put a V8 into my YJ. Of course I could not stop there, I had to put in the D60 front axle, and the GM Corp. 14 bolt rear axle. Then I had to put in the Stak Monster 3 speed transfer case, and the GM 465 Granny 4 spd transmission, just for starters............lol. It is definately cheaper to find one on Ebay, already done, and will cost thousands less. It is a very poor investment.

Best thing to do is trade it in for the 6 cylinder.
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Old 09-04-2006, 07:13 AM   #4
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Quote:
Originally Posted by victorymyst
I have a 2000 TJ with 32000 miles and I am sick and tired of the 4 banger. Looking to swap in V8 probably ford 302. Has anyone done this? Is there a supercharger made for the 4? I am looking for advice.

Thanks
there is no supercharger that i know of made for the 4 banger...my friend got a whole V8 and its complete drivetrain from a junkyard for about 2K
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Old 09-04-2006, 10:14 AM   #5
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Quote:
Originally Posted by bluvikng
Best thing to do is trade it in for the 6 cylinder.

This is my suggestion as well. After seeing what I have in store for a V8 swap I can't say I'm too enthused about the idea. The 6 is a stout motor and with every option to get lower gears I don't see why you wouldn't swap it out for an already equipped 4.0L wrangler.


Of course.... There is something about 350+ ft.lbs of torque at your foots desire
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Old 09-04-2006, 10:59 AM   #6
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Of course.... There is something about 350+ ft.lbs of torque at your foots desire
yeah my buddies YJ has a corvette engine and it has so much power! man i wish i had it...its ready to jump over anything when you touch the pedal

he said the V8 swap he did actually wasn't too bad
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Old 09-04-2006, 12:05 PM   #7
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Originally Posted by bigjeep
yeah my buddies YJ has a corvette engine and it has so much power! man i wish i had it...its ready to jump over anything when you touch the pedal

he said the V8 swap he did actually wasn't too bad
Problem is... with that much power, most guys will have to show it off and end up with broken diffs and axles, among other sordid and costly items.
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Old 09-04-2006, 01:57 PM   #8
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Originally Posted by Dare2BSquare
Problem is... with that much power, most guys will have to show it off and end up with broken diffs and axles, among other sordid and costly items.


in my opinion that is why you don't do one without the other. I wanted a LT1, 42" tires, and lots of gear reduction. That equals big axles.
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Old 09-04-2006, 02:01 PM   #9
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Did yall ever see that video of the Jeep with the Corvette engine in it floating around the internet inboxes? It had so much torque, that the jeep would nearly flip over backward when you gunned it from a dead stop.
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Old 09-04-2006, 03:06 PM   #10
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Originally Posted by MR.CLIFFORD
in my opinion that is why you don't do one without the other. I wanted a LT1, 42" tires, and lots of gear reduction. That equals big axles.
So let's start making a list. What all would you need to convert a tj from a 4banger to a v8? And throw out some prices for parts, not even thinking about labor. Let's see what we come up with.
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Old 09-04-2006, 03:22 PM   #11
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he runs 33's and his axles have actually held up quite well! but of course new axles couldn't hurt...you would need wiring harness, coolant stuff, the engine, transmission, transfer case, and radiator?
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Old 09-04-2006, 04:20 PM   #12
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Originally Posted by Dare2BSquare
So let's start making a list. What all would you need to convert a tj from a 4banger to a v8? And throw out some prices for parts, not even thinking about labor. Let's see what we come up with.


The obvious?

Engine
Tranny
Tcase
Wiring harness
PCM
New Drive shafts

That list alone drove me crazy for over a year.

You will need a new gas tank and fuel pump so you might as well get new fuel lines.

With the new engine comes new motor mounts and new tranny mount. Where do you put the motor? Will it clear your exhaust and drive shafts with no problems? Will it be inline with your axles? What about wiring? You have to make the existing wiring work. Your 4 cylinder PCM is useless so huck it. What about the dash? It won't work without the old PCM. So that means new dash gauges.

Next is the tranny. What tranny? 5 speed or auto? Makes a huge selection in gearing and what axles will live longer. Is your auto or 5 speed a 4wd tranny? It probably won't bolt to the tcase you want so you need to call advancedadapters.com. Holy crap that is an expensive phone call.

Once you can bolt a tcase to your tranny then what?? Do you do it right the first time and get an atlas or stak box?? That's freakin expensive as well. What did I do?? Crawl box! NP231 to Dana 300. Twin sticked and really freakin low.

What about drive shafts?? You can't stick your stockers in there and you want something that will last. highangledriveline anyone?? for one ton shafts you need to budget a grand or so.

Axles?? D35? No. Dana 30? No. 44s?? no. Might as well go big once and be done with it. Any normal large sized tire will takes its toll on a dana 60 with stock shafts. So you have to upgrade those. Has anyone checked into the price of a going beefy dana 60 front steering axle?? That could discourage you in a heart beat.

If you wanted larger tires how are you going to turn them?? Hydro assist? good way to break stuff. Full hydro? Good bye street time. No street time it is time to buy a trailer and a truck to haul you to and from the trails. Gas at 3.+ a gallon?? Who's going wheeling again??


The best advice I could give someone is figure out what you want your jeep to be and work towards it. Do not skimp on price or products cause it will cost you more down the road. Get what you want and start price shopping. Once you figure out your budget add 50% more to that to get your project going. There will always be unknown costs you have to account for. Drill bits, cut off wheels, welding, bandaids, hose clamps, sanding discs, broken tools, gloves, oil, the list just goes on and on.

My head hurts now and I really don't have the motivation to go work on my jeep. So thanks!
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Old 09-04-2006, 04:20 PM   #13
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Motor and transmission mounts, modified drive shaft, what about emissions, does that depend on what your drive train came out of? And the computer? Sorry I was posting when the previous post was posted. Sorry to be redundant.
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Old 09-04-2006, 04:26 PM   #14
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Emissions is something I don't have to worry about thankfully. KS doesn't inspect it so I'm good there. You will probably know your own states law regarding emissions code.
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Old 09-04-2006, 07:34 PM   #15
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Why not look into a stroker I6?
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Old 09-06-2006, 11:01 PM   #16
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Avenger makes a supercharger for the 4-banger.
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Old 09-07-2006, 08:25 PM   #17
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well if your goona go the forced induction route, why not put forged internals with low compression pistons in it plumb up a turbo and boost the heck out of it!

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