People ask about swapping AMC V8's into their CJ's all the time, so hopefully we can use this thread to answer all the questions you may have. You can use this thread to ask more detailed questions about specific problems
-Passenger side frame mount needs to be replaced with one from a CJ that had the 304 (commonly found on ebay)
-Both side block brackets need to be replaced by ones meant for a CJ with the 304 (again check out ebay)
-Any local parts store will carry neoprene mounts you may need.
Thanks fuzz401 for the pics!
Frame mount AMC I-6 to V-8
I-6 3 slots / V-8 2 slots
CJ - V-8 block mount (bracket)
M.O.R.E. Makes a set of bombproof mounts which eliminates the need for any other frame mount, neoprene mount, or block bracket
because its all built in they can be found here: http://www.4wheelerssupply.com/catal...oducts_id/1781
AMC V8s are externally balanced, so use matching components for vibration dampers, flywheels, and flex plates. If your having trouble finding a 360 flywheel, a 258 flywheel can be rebalanced and used. You also need to keep in mind the correlation between the tranny the engine used to be bolted up to and the one in your CJ. For example if the engine was bolted up to a th400 but your Jeep has a tf999 you will need the proper flexplate (balanced to whichever engine you are using) to bolt up the the tf999's torque converter.
The only engine I'm 100% sure has a matching radiator outlet to AMC V8's is the 258. You can reuse the 258's radiator but
if you want to upgrade you can use a radiator meant for a CJ with the 304, if you are swapping out an I4 or 232 you should
go ahead and upgrade.
(this information is based on swapping out a 258, someone else can go deeper into the wiring of this and other engines)
Engines older then 1978 have the prestolite ignition system, while 78 and newer will have the duraspark system. The 2 arent
compatible with eachother, a way to solve this is go HEI. Other than that you may need to lengthen the coolant temp sensor
Use the wiring diagram for a 1980 CJ with a 304 V8, it will be correct for AMC V8 swaps.
I would just go custom on the exhaust. Hedman as well as some other companies (check http://summitracing.com/
) make headers for this swap, otherwise you can just use the stock manifolds and custom exhaust from there. If the engine you are using is really old (66-69) you should make sure to get the stock manifolds because of the rectangular port heads.
This is probably the easiest of the V8 swaps, and with the help of JF anyone can do it!
(If anyone sees any mistake let me know, also add anything you feel is needed)