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Unread 11-15-2009, 10:18 PM   #1
CarolinaAndy
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1976 CJ5 
 
Join Date: Oct 2009
Location: Hilton Head
Posts: 39
cj5 motor id? 232 or 258?

I have been trying to make absolute sure my jeep I bought is a 232 and not a 258. Most info I've found says they came that year with the 232 as a 6cyl but I don't know if it's been swapped out in the last 35 years can anyone help me figure this out since they use the same heads and manifolds.




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Unread 11-16-2009, 12:12 AM   #2
CarolinaAndy
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1976 CJ5 
 
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Location: Hilton Head
Posts: 39
I can't find the info I need on jeeptech.com, or googling it. I thumbed thru my haynes, my FSM, everything. I was operating under the thought it was a 232 just because of some bad info I got but I theres so much aftermarket stuff and no serial #'s I can find. I believe the transmision is a 150 but I'm not sure. And a dana 20. help a nubee out!!!!
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Unread 11-16-2009, 08:09 AM   #3
Jeepican
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Dont hold me to it .... but I think the only way you can check is to do a compression test.....
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1976 CJ5 - 232 I6, MC2100, YJ Booster, Front disc conv, 2.5" BDS, 1" Body Lift, .5" lift Daystar Shackles, 33 x 10.50 BF KM2, Twin Stick
[URL="http://www.jeepforum.com/forum/f8/slow-76-cj5-rebuild-1118617"][COLOR="blue"]My Build Thread[/COLOR][/URL]

"Oh, you're just full of fun today, aren't you? Why don't we go up to the old people's home and wax the steps?"
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Unread 11-16-2009, 08:12 AM   #4
Jeepican
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Also more than likely yours is like mine..... if its 3 speed it should be the t150 and should be a dana 20, w/ dana 30 front and amc 20 in rear. But like you said ....PO could have changed over stuff

Got any pics of the Jeep? I love to see others that are the same model as mine.....
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1976 CJ5 - 232 I6, MC2100, YJ Booster, Front disc conv, 2.5" BDS, 1" Body Lift, .5" lift Daystar Shackles, 33 x 10.50 BF KM2, Twin Stick
[URL="http://www.jeepforum.com/forum/f8/slow-76-cj5-rebuild-1118617"][COLOR="blue"]My Build Thread[/COLOR][/URL]

"Oh, you're just full of fun today, aren't you? Why don't we go up to the old people's home and wax the steps?"
-Barney Fife-
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Unread 11-16-2009, 08:47 AM   #5
CarolinaAndy
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1976 CJ5 
 
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Location: Hilton Head
Posts: 39
yeah, hears the album so far jeep pictures by andy_oberdier - Photobucket
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Unread 11-16-2009, 09:07 AM   #6
TomCombo
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1983 CJ7 
 
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Location: Oswego, IL
Posts: 63
The engine code is stamped on a pad on the right side of the block, just ahead of the distributor. It beaks down like this:
A- 258 1 bbl (71-79)
B- 258 1 bbl Low Compression (71-74, Jeep ONLY)
C- 258 2 bbl (4.2L, 76-89)
E- 232 1 bbl (70-79)
F- 232 1 bbl Low Compression (71-74, Jeep ONLY)
G- 232 2 bbl (70-74)
L- 232 1 or 2 bbl (68-69)

1. Year built code 2 & 3. Number of the month 4. Engine size/type code 5 & 6. Day built

Thus, "409C21" indicates 1962, September, 195.6 OHV (cast iron), 21st day.

Day Built "Year Codes"
1=1959 2=1960 3=1961 4=1962 5=1963 6=1964 7=1965 8=1966 9=1967 1=1968 2=1969 3=1970 4=1971 5=1972 6=1973 7=1974 8=1975 9=1976 1=1977 2=1978 3=1979

Beginning in 1980 the last digit of the year is used (1980=0, 1981= 1, etc.)

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Unread 11-16-2009, 09:13 AM   #7
Jeepican
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Nice!
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1976 CJ5 - 232 I6, MC2100, YJ Booster, Front disc conv, 2.5" BDS, 1" Body Lift, .5" lift Daystar Shackles, 33 x 10.50 BF KM2, Twin Stick
[URL="http://www.jeepforum.com/forum/f8/slow-76-cj5-rebuild-1118617"][COLOR="blue"]My Build Thread[/COLOR][/URL]

"Oh, you're just full of fun today, aren't you? Why don't we go up to the old people's home and wax the steps?"
-Barney Fife-
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Unread 11-17-2009, 10:16 AM   #8
CarolinaAndy
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thats an awesome resource tom. Thanks so much. where did you find that? I've looked for days! Thanks jmorris
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Unread 11-17-2009, 10:30 AM   #9
CarolinaAndy
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1976 CJ5 
 
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SUCCESS!!! 807E28 so it looks like built in july 1975 and it's a 232. I would guess it's the exact same motor it came off the line with!
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Unread 11-17-2009, 02:46 PM   #10
TomCombo
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1983 CJ7 
 
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Glad I could help. Funny that my 83 came with a 1975 232 swapped in. It is old, but seems to run pretty good actually. Those Jeep 6's will run forever.

I don't remember where that information came from. I copied it to my own folder. Try googling "jeep engine code" or "amc engine code".

Tom
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Unread 11-17-2009, 03:48 PM   #11
Mike Romain
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1986 CJ7 
 
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Location: Off the Grid in Chester Grant, Nova Scotia, Canada
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Quote:
Originally Posted by CarolinaAndy View Post
Just an FYI, your gas filter is in upside down, this can make for long cold starts. The return line should be up top so vapor can blow back to the tank on a hot shut down. If it is at the bottom it can drain all the lines when it sits, vapor locking it.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Unread 11-17-2009, 11:30 PM   #12
CarolinaAndy
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1976 CJ5 
 
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Location: Hilton Head
Posts: 39
thanks for the info. I pulled it off and istalled it the right way. I do alot of stupid things but that one I can blame on the PO.
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Unread 11-18-2009, 01:51 AM   #13
Chuckles0227
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1980 CJ5 
 
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Location: Genoa, IL
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The code on mine is 911A05 so it was produced September 5th, 1976? It had a 2bbl carter carb before i rebuilt the engine, so someone must have swapped out the manifold and the carb?
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Unread 04-15-2013, 01:51 PM   #14
Stephen84
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1978 CJ5 
 
Join Date: Nov 2011
Location: mannford, ok
Posts: 6
Im confused the code on mine is 11CL10 can anyone tell me what engine i have please
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Unread 04-15-2013, 02:10 PM   #15
Stephen84
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Mine has a plastic valve cover and a aluminum intake with a two barrel carb i need to buy parts but i dont know what year or engine to buy for
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