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Unread 07-08-2010, 11:44 PM   #1
1998tjsport
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Jeep Build Ideas....

So I pulled the motor out of the 4cyl I just bought tonight and I decided instead of replacing it I am going to put a Gen III gm small block in it. I am seriously considering an LM7 (out of like a 5.3 2000-2004 Tahoe). They make 295hp 340tq and can be had with electronics for like 700 bucks with average mileage. I know alot of people use the 4l60e or a TH350/400/700 with this but I am a die hard manual fan. How much power can an AX15 handle if I can find one for a good deal? Should I just look for a NV4500 out of a chevy truck? Would it be worth the money? My goal is to do this swap leaving the stock tcase and axels for under 4k. Axels will be changed as needed What do you guys think? Figure 1k for the motor and computer. 500-1300 depending on trans. 400 for the wiring modifications. 170 for motor mounts. 200 for a rad and cooling hoses. 400 for a clutch set up. That leaves around 1k give or take for other things. What do you guys think?

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Unread 07-08-2010, 11:51 PM   #2
MATT99TJ
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I think I'm jealous. Thats what I think.
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Unread 07-09-2010, 12:24 AM   #3
Fropleyqk
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I think you need to do a lot of research. If you really want to be safely within your budget, take your original estimate and double it. Not saying youll need all of it but its ALWAYS going to cost more than you originally think. You also need to take into account special tools, adapters, workspace, outsourcing, fabrication.... research. Im not trying to be an @ss but the generality of your question tells me you have a loose idea of what you want to do.

Engine swaps can and have been done. Take a look at other swaps and figure out why theyre choosing the engines that they do.
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Unread 07-09-2010, 12:57 AM   #4
kuruma
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I'm seeing a Ford 460 in your future............
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Unread 07-09-2010, 01:34 AM   #5
BWFBezerk
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Seeing as how you live in NY too, I would Love for you to let me in on how you register and inspect this once the engine swap is done.
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Unread 07-09-2010, 01:34 AM   #6
RogueSpear2023
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My neighbor has done four Chevy V8 swaps he averages about 5-7K each in parts, I am not sure how much force the AX-15 can take, I know the AX5 you have now will not take much at all. The nothing is going to be a direct bolt in so realize that, also you rear axle if it was originally a 4cyl is a D35 and will not take the increased torque from a V8, it will need to be swapped as well. A Ford 8.8 if you have welding skills, otherwise a D44 from a TJ will be a direct bolt in, but is more expensive.
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Unread 07-09-2010, 10:55 AM   #7
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Quote:
Originally Posted by 1998tjsport View Post
Figure 1k for the motor and computer. 500-1300 depending on trans. 400 for the wiring modifications. 170 for motor mounts. 200 for a rad and cooling hoses. 400 for a clutch set up. That leaves around 1k give or take for other things. What do you guys think?
i think your off just alittle bit on you numbers.... and as stated above [a] your going to annihilate your trans [b] destroy your axles

now add in [c] custom exhaust and emissions components like cats o2 sensors [d] pcm programming [e] plan on over 600+ for wiring alone IIRC on a chevy [f] skid plate and or transmission mount modifications [g] fuel system modifications just to name a few things off the top.

you need to do alot of research before even considering this project. you only have 6 parts listed to make this swap a reality.... you havent done your homework yet

i say go for a motor swap, just do fool yourself that it can be done, and be street legal for the numbers you posted.
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