232 I6 block same as a ?????????

Here's where I'm at................
My '74 jeep is days away from being on the road.
So far the OEM 232 runs great, good oil PSI, (little lifter rattle, but It has been sitting for 25 years til 3 weeks ago), heck the carb is working good, as well as the fuel pump, this jeep just amazes me how well perserved it was, now if only I could get the gas gauge would to work!!
My youngest son starts college in a few weeks, (Johnson College- formerly Johnson Technical School, where I learned my mechanic trade decades ago).
One of his "projects" is to rebuild a motor, sooooooo,
Is a Inline 250 out of a jeep, say in the 70's, maybe even the early 80's bolt right up to my existing set up, (all stock)???? I don't want to go through thenhassle, (again) of adpters, finding this or that, I like this jeep as is, weird huh? Maybe I'm getting old er something)!
I'll TRY to find a motor for him and he can do it over, install it and poof, he's happy, the "Green jeep" is happy,'m happy I don't have to do it!
I'm gonna thing the blocks are the same, just punched out to make it a 250, but, you never know jeeps are tricky like that!
Joe
That's my main problem- I'm always thinking!R)

 

There is no Jeep 250.

There is a Jeep 258, which is the same block as the late (post-1970) 232.

The difference between the 232 and 258 is all in the stroke, so the crank and rods are different. They may use the same pistons; I'd have to check.

The 258 changed in 1981, becoming the 'lightweight' version, with a different crank with fewer counterweights, a new thin-wall block, and some external changes like a plastic valve cover and lighter manifolds. Most things are interchangeable between pre- and post-1980, but the pre-1980 engines are usually preferred for Jeeps because of the heavier crank.

I think you need to do a little reading and research - there are lots of parts that are compatible withn the AMC inline 6s, but there's no guarantee that everything will mix and match. There's also a Jeep 242 (4.0L) in this engine family, which broadens your performance options a lot, if you know what you are doing.

 

2-5-8-! I meant to type that but fer some reason 2-5-0- came out!
That's weird that Jeep would toss the 232 after a few years when history followed they ran the same motor for many years.
It's also weird that they changed THAT much.
Tanks!
Now to find a early 2-5-8!
Joe
Jeep- the only 4 wheel thing I'll tolerate the tub leaking water, the drive line leaking oil, the wipers banging away, the general lack of heat, and my kidneys bashed on each drive!

 

History. The 232 has been around a long time. It was introduced with the 199 in 1964 - an all-new design with 7 main bearings and a cast crank. In mid 1970, the deck height and bell pattern were changed and the 232 and 258 were introduced. The new 232 used the old 199 rods on its current crankshaft, and the new 258 had a new stroked crankshaft and uses the old 232 rods.

The 232 was used in the '70s for AMCs small cars and as the base engine for CJ Jeeps and Commandos. AMC also used the 232 for several years as the engine in their postal Jeeps. It was discontinued in 1978 or 1979 (not sure of the exact year in Jeeps) and the 258 became the base engine for all the Jeep models. The 2V 258 was introduced in 1977 as the base motor for trucks and wagons, and the 1981-on lightweight 258 was only available in a 2V version, at least domestically. The CJ may have gotten the 2V 258 before 1981 - not sure. Certainly all domestic 258s had 2Vs after 1980.

The late 232 ran from mid-70 through at least 1978, so it had a good run at 8-9 years. Also, the newer 232 was a simple adaption of the inline engines that had been in production since 1964, so by '78 AMC had recovered all of their investment in the engine. It's retirement also coincides with the end of the Gremlin, which I expect was the prime recipient of 232s. In 1979, AMC sold a share of the company to Renault, which guaranteed that the small car component of the AMC line would be Renault derived, not AMC derived. My guess is that not a lot of Jeeps were sold with the 232 - the 258 option was cheap (ca $50 IIRC) and made a noticable difference in performance. You'd have to be a fleet buyer to be interested in the 232. Not much need for the 232 after 1979.

Also --- if you want performance, go 4.0L, not 258. Easy, easy swap.