View Full Version : Best Engine for a CJ-7

01-02-2005, 04:25 PM
SO I'm finally gettin around to workin on the CJ-7

258 is roasted
transmission may be

So im lookin for the best engine for a completely off-road

V8 def.

350 360 or whatttt

01-02-2005, 04:31 PM
350 is always a good choice.

01-02-2005, 04:38 PM
360 is cool cuz it keeps it in the right family.
But you can't beat an SBC for price, availability, ease of modification, you name it. It's popular for a reason

01-02-2005, 04:41 PM
350s are easy to find

360s on the other hand....

01-02-2005, 04:47 PM
either of those would be my choice, like bbaxj said the 360 would br mopar still which has its meaning but the 350 is easier to get stuff for and whatnot.

01-02-2005, 05:06 PM
350 has better aftermarket support
a AMC 360 will be a bolt in, and be less work, but not so good with the aftermarket.

01-02-2005, 05:28 PM
What would be included in installing the 350?

01-02-2005, 05:57 PM
I would go with the 350 just because it is much easier to find and get parts for.

What about the CJ 304 graemlins/iono.gif If you wanted to keep it "Jeepy"

01-02-2005, 06:01 PM
I love my 360 Its looovvvelly. I if you find one. love it

Or do a chevy 350 or something.

01-02-2005, 06:02 PM
Originally posted by JeepinSam:
What would be included in installing the 350? motor mounts, bellhousing, clutch flywheel....bunch of electrical stuff.. depending on TBI MPI or carb.
the good news in its a fairley common swap, and alot of aftermarket parts for this job to make it a little easier..

Resq XJ
01-02-2005, 09:41 PM
327 hi rev easy to work on and tons of after-market parts. Dodge/AMC has nothing on a chevy small block!

Rubicon Rick
01-02-2005, 10:28 PM
Visit these URLs for the required parts and adapters. Recommend Fuel Injection for extreme environmental operating conditions.


There will be plenty of information on every aspect of the swap on these websites. The last URL is for wiring harnesses to replace your worn out one in the CJ or to add factory style Fuel Injection engines to an early model Jeep easy. Makes the Jeep have brand new vehicle driveability.....

If money were no object in the swap consider:

My personal favorite the 5.7L LS1 4L60E 4-Speed automagic powered Jeep. Oh what your Jeep can do with a bowtie all aluminum 410HP/400FP torque Vette engine under the hood that starts first crank. Every time! Is 50 state smog legal & actually starts right up in 20 below weather......"Hold on to yer' butts folks!"
Rubicon Rick

01-02-2005, 11:43 PM

The 350 sounds good b/c in my searching a 360 has not popped up sad_anim.gif

However there are over 20 running treefitties lying around this area.

01-03-2005, 01:03 AM
Mopar makes a crate 360 thats easy to find parts support for if you'd be interested in that...

01-03-2005, 01:52 AM
572 gm crate motor

01-03-2005, 02:07 AM
Originally posted by Resq XJ:
327 hi rev easy to work on and tons of after-market parts. Dodge/AMC has nothing on a chevy small block! 90% of real wheelers are more concerned about low-end torque than how much their motor will rev. I'm not saying the 327 is a bad motor at all, but probably not ideal for most wheelers

01-03-2005, 02:19 AM
I'd go with a good ol 360!

01-03-2005, 02:34 AM
Ford 302

01-03-2005, 03:18 AM
Originally posted by HotSEXJ:
Ford 302 Yes, EFI 5.0/302 graemlins/rock.gif

01-03-2005, 08:37 AM
I don't know about the CJ-7 with an I6, but a small block GM V8 was a DROP IN motor for my '82 CJ5 that came with the little Pontiac I4. All GM motors from then had the same bell housing and wiring harness so I just picked up a used 305 HO from a Monte Carlo and dropped it in. The absolute only change I had to make was to knock the old motor mounts out and bolt in a set of universal mounts. Everything fit perfectly right down to the stock clutch and pressure plate. Even the wiring harness plugged in. All the installation work except exhaust was complete in two weekends of work by just my brother and me with no welding or cutting required.

In other words, I vote for the SBC. The aftermarket is full of all the adapters, trannies, etc. that you will ever need. Since it is an AMC, it is just a conglomeration of stuff built by other companies anyway. AMC mated a Pontiac motor to a Ford 4 speed to Dana 4x4 parts to build my CJ5. There is nothing special about building something out of a parts bin. Take the easiest route.

01-03-2005, 10:44 AM
I just recently bought a 84 cj-7 for a project and will be throwing in a fuel injected 5.0 302 myself. It sounds sweet looks sweet, is lighter than a 350. My friend has one in his jeep and has plenty of power. He likes beating other mustangs in his jeep.--------Kyle

01-03-2005, 12:30 PM
I don't like the 5.0

sooooooooooo it looks like I'm going to have to find a good 350 to pop in there.

This will be a mud truck for the most part while my Cherokee wil stay for rocks.

I'm thinkin D60 front and rear for the CJ....
....should hold up to the 350 and 38s+

Mr. MeatCleaver
01-03-2005, 01:04 PM
How about a 454, wich has a crankshaft and camshaft specifically designed to produce low end power?

01-03-2005, 02:18 PM
Originally posted by Mr. MeatCleaver:
How about a 454, wich has a crankshaft and camshaft specifically designed to produce low end power? good luck with finding a cheap one

01-03-2005, 10:47 PM
5.9 360 that is what i plan to put in my cj keep it in the family go 360