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Unread 10-13-2009, 03:26 PM   #1
P0NG
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1948 CJ2A 
 
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what engine to put in my cj2a

I am ready to put a engine in my 48 willys but really dont know what i want to put in it. I have a buick V6 that doesnt run and looks like its in horrible condition. What are my options for mounts? advance adapters has some but i was kinda hoping for a longer list of options. Really im just looking to get some opinions and ideas for this huge project that ive decided to tackle. any thoughts would be greatly appreciated

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Unread 10-13-2009, 05:21 PM   #2
OlivergreenCJ7
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I believe te L head 134 came in these jeeps so the F134 might be a doable upgrade from a 50-60's CJ5 without cutting out firewalls and modifying a ton.
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Unread 10-13-2009, 05:32 PM   #3
Pathkiller
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The F134 won't fit under the hood without cutting a hole for the carburetor. Hence the redesign to the high-hood CJ3B. A V6 is a good choice and fits much better in the space available. The Buick/Jeep Dauntless V6 is a great choice because you can use factory drivetrain parts with no need for adapters.
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Unread 10-13-2009, 05:34 PM   #4
alex211
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Use the dauntless.
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Unread 10-13-2009, 07:25 PM   #5
P0NG
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thanks guys. the old body was all rusted out and it had the firewall cutout for whatever motor was put in it. now its got a brand new body on it and i dont really want to cut into the firewall again. what kind of gas milage would i be looking at with the dauntless?
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Unread 10-13-2009, 07:31 PM   #6
alex211
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Some people say 18mpg and some say 8mpg. It all depends, I have never driven my jeep on the road yet so I won't know until the restoration is done. It's in a ton of pieces right now.
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Unread 10-13-2009, 08:02 PM   #7
P0NG
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ive read the 231 idles better then the 225, but the 225 vibrates less. do you know if this is true?
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Unread 10-13-2009, 08:24 PM   #8
alex211
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Originally Posted by P0NG View Post
ive read the 231 idles better then the 225, but the 225 vibrates less. do you know if this is true?
If the 231 is a 77 or later even fire there will be some differences in how they run and sound. The early 231 and 225 are both odd-fire.
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Unread 10-13-2009, 08:51 PM   #9
kercher
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I run the 225 dauntless and in my 2a. It is a nice motor but idles a little rough. I get about 16 mpg with 5.38s and 36s so I can't complain. Though, I am thinking about an lt1 right now so I might be selling it soon.
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Unread 10-14-2009, 09:59 AM   #10
OlivergreenCJ7
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Quote:
Originally Posted by Pathkiller View Post
The F134 won't fit under the hood without cutting a hole for the carburetor. Hence the redesign to the high-hood CJ3B. A V6 is a good choice and fits much better in the space available. The Buick/Jeep Dauntless V6 is a great choice because you can use factory drivetrain parts with no need for adapters.
ah, I keep forgetting about the 3b. Good to know that the dauntless will fit a 2A
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Unread 10-14-2009, 10:34 AM   #11
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My 69 CJ5 gets about 18 with Warn OD and 4.88's running 31's. Best tank was 22-with a very strong tail wind. I have never found the odd-fire idle to be a problem. The only short fall of the 225's is if you drive them very fast on the blacktop. They don't have a lot left above 75. The sbc in my 3B is much more fun to drive and also gets about 18 (with 4.10's, OD, and 33's).
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Unread 10-14-2009, 10:49 AM   #12
Nickmil
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Check out Earlycj5.com

LOTS of swap info there for early CJ's and flatty's.
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Unread 10-23-2009, 02:01 PM   #13
P0NG
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Thanx for input guys, decided to put the buick 231 evenfire in the 2A, the block #s says its 79-81. It looks kinda rough but it should clean up nice. Im gonna get started on it when I get back from elk camp. Any thoughts on axle swaps for my upcoming project?

Last edited by P0NG; 10-23-2009 at 03:20 PM..
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Unread 10-23-2009, 09:57 PM   #14
jeepdaddy2000
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Did you say you have a non running 225? If your going to toss it, I would be interested in it as a parts motor.Probably have to send the boy to go get it, since I'm stuck overseas.
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