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Unread 11-03-2012, 12:11 PM   #1
carlbirt
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1957 CJ5 
 
Join Date: Jun 2012
Location: East Millinocket, Maine
Posts: 37
Chevy 4.3 into a CJ5

I am looking at putting a 4.3 v6 from a Chevy blazer into my cj5. To avoid some of the adapters I'm going to be putting in either a Muncie SM465 or a Muncie SM420 along with a NP205. By putting in the NP205 i can eventually run a doubler if at some point I decide that its needed.

Plan is to find a full blazer that still has a good motor in it for the swap so i can have everything that is needed. By this I mean the wiring harness, computer, rear axle, motor mounts?, and i am sure i will find a few more odds and ends.

Just want to know if someone here has done the same. Looking to see what it involves I know that there is a decent amount of work that is involved with an engine swap. Just looking to see what problems or issues others have run into.

Thank you

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Unread 11-03-2012, 01:00 PM   #2
1SASjeepster
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1992 YJ Wrangler 
 
Join Date: Apr 2010
Location: Smith,TN, Tennessee
Posts: 720
Carl,

Check out NOVAK JEEP CONVERSIONS on the internet. They have a lot of useful information on most jeep conversions. I am sure they can help.

Take care,
__________________
Check out "YJ V6 Conversion" if you want to see a frame up restoration of my 1992 YJ.

Check out "WWII Jeep Photos AND Restoration of..." if you want to see the original JEEP in action...
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Unread 11-03-2012, 01:05 PM   #3
carlbirt
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1957 CJ5 
 
Join Date: Jun 2012
Location: East Millinocket, Maine
Posts: 37
Thank you. I will go take a look.
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Unread 11-03-2012, 01:10 PM   #4
will228
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2005 LJ Wrangler 
 
Join Date: Jan 2007
Location: NH
Posts: 910
if you're going spend the money and time to go through a swap you might as well go with a V8 of some sort. I did a 5.2 swap and cant see a v6 being worth all that effort.my 2 cents
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Unread 11-03-2012, 04:07 PM   #5
carlbirt
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1957 CJ5 
 
Join Date: Jun 2012
Location: East Millinocket, Maine
Posts: 37
Was thinking of doing a v8 but decided not to. For what I am going to be using it for don't need that much power. I also used to own a blazer and the 4.3 had more power then I ever used and was a tough little motor.
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Unread 11-03-2012, 08:45 PM   #6
1SASjeepster
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1992 YJ Wrangler 
 
Join Date: Apr 2010
Location: Smith,TN, Tennessee
Posts: 720
Carl,

Check out my signature for information about my thread. I dropped a 4.3 in my 1992 YJ. It is "frame up" restoration but it has a lot of information that can help you. I posted a lot of photos and put a lot of information just so people like you can see what it is going to take and make an informed decision. It is missing in a lot of threads with conversions.

Take care,
__________________
Check out "YJ V6 Conversion" if you want to see a frame up restoration of my 1992 YJ.

Check out "WWII Jeep Photos AND Restoration of..." if you want to see the original JEEP in action...
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Unread 11-03-2012, 10:28 PM   #7
carlbirt
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1957 CJ5 
 
Join Date: Jun 2012
Location: East Millinocket, Maine
Posts: 37
Thank u I will differently take a look at that. I am in the same process that u were in but for the fact that mine is a cj. It should help me out a pot more then with just the motor.

Thank you again
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Unread 08-05-2013, 09:20 PM   #8
mdavi03
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1959  
 
Join Date: Aug 2013
Location: orlando, FL
Posts: 1
Late model V6 into CJ5

If you use a late model V6 with injection, using the late model computer and wiring harness, be aware of all the security interlocks.
I used a 2006 V6 with it's wiring, and had to reprogram the computer to bypass the ignition magnetic lock, and had to add a 2nd stage wiring to the ignition switch in my CJ. The computer apparently looks for two inputs at the same time.
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