Stright Six engine size? - JeepForum.com
 
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post #1 of 12 Old 01-05-2009, 09:58 AM Thread Starter
Abilene
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1978 CJ7 
 
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Stright Six engine size?

I recently purchased a 1978 CJ 7 project with a straight six in it. Is there any easy way of telling what size engine it is?

Thanks

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post #2 of 12 Old 01-05-2009, 10:00 AM
southshore30
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258 probably.
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post #3 of 12 Old 01-05-2009, 10:06 AM
mcmud
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Here you should be able ID the engine with this link
http://www.amcrc.com/tech/engine.html
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post #4 of 12 Old 01-05-2009, 10:19 AM Thread Starter
Abilene
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Thanks for the info guys, I appreciate the help.
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post #5 of 12 Old 01-05-2009, 12:27 PM
jp360cj
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it should have the CID cast into the block on at least one side

77 CJ-7- AMC 360, Edelbrock cam, MC2100, Fenderwells, CJ T18/D20, Chevy D44/EB 9" rear, Trutrac f/r, 4.11, SOA, 1.25 lift shackles, 35x12.50 BFG KM2s, Shackle Reversal
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post #6 of 12 Old 01-05-2009, 12:30 PM
jerryjeeper
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99.99% odds that it is a 258 cu. in engine.
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post #7 of 12 Old 01-05-2009, 12:35 PM
j33pman
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Quote:
Originally Posted by jp360cj View Post
it should have the CID cast into the block on at least one side
Only the V-8's had the engine size cast in the side

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post #8 of 12 Old 01-05-2009, 01:21 PM
jp360cj
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Quote:
Originally Posted by j33pman View Post
Only the V-8's had the engine size cast in the side
I didn't realize that...thanks for the info

77 CJ-7- AMC 360, Edelbrock cam, MC2100, Fenderwells, CJ T18/D20, Chevy D44/EB 9" rear, Trutrac f/r, 4.11, SOA, 1.25 lift shackles, 35x12.50 BFG KM2s, Shackle Reversal
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post #9 of 12 Old 01-05-2009, 01:37 PM
78treehugger
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My 78 CJ 5 has a 232. Are the stickers still on top of the grill? If so it will say there. Otherwise you'll need the numbers off the side of the engine and then decode them. What carb? 1 or 2 brrl? More than likely a 258 though.

1980 CJ 7--3" Black Diamond, 1" body, locked both ends, 4.56, 35x12.50x15 SS LTB, "family" cage

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post #10 of 12 Old 01-05-2009, 01:59 PM Thread Starter
Abilene
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I am thinking I have a 258 but not sure. There are not any stickers on the Jeep. It has a fiberglass tub and front end. I did pull up the link above with the codes and will take a look at what is on the engine this evening. I really appreciate all the help.
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post #11 of 12 Old 01-05-2009, 04:47 PM
birddogO1
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It's a 258, 4.2L

All CJ-7's in my part of the world have them. Then again there is only 2 and one of them is mine.
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post #12 of 12 Old 01-05-2009, 05:24 PM
mcmud
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Quote:
Originally Posted by birddogO1 View Post
It's a 258, 4.2L

All CJ-7's in my part of the world have them. Then again there is only 2 and one of them is mine.
Not all '78 model had the 258. The 232 was used as well until the end of the '78 build year.
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