Which AMC 360 engines would fit my 1990 GW?

[JacobNL]

Hello all,

Sadly, last weekend I've blown the engine of my 1990 Grand Wagoneer, so I'm looking for a replacement engine. I've posted a classified on the Dutch Jeep forum for a 360 AMC engine, and so far I've had two responses.

Since I have been offered engines from 1978 and 1979, I'm wondering whether these would fit my car. I know quite a bit about Wagoneers (as in: I've read a lot of forum posts and articles), so I've read that as for engine specs not much has changed over the years since 1978, but I'm not a mechanic.

In short my question is: could I fit a AMC 360 engine from 1978 or newer into my 1990 Grand Wagoneer? I do obviously have a different transmission than some of the older models but I guess that should'nt be a problem.

Thanks in response for replying. If there are any other things to take into consideration I would be happy to hear from you. Any help is appreciated!

Regards,
Jacob

[mattmopar440]

yes all model 360 amc V8 are the same only difference over the years are the intake and exhaust manifolds

[Ristow]

all of em,with the possible exception of the very early ('71-72) engines due to a possible different crank flange.

[JacobNL]

Hi,

@mattmopar440
I guess that since my exhaust manifolds are still intact, I could re-use those? I'm not sure about the intake manifold though, as the engine has overheated. Is that something to take into consideration if I wanted to keep the original carburettor? I have an LPG system installed so keeping it could be important.

@Ristow
I have looked for remanufactured engines (ofcourse, and it's still an option) and I guess I remember one of the sites mentioning that, but I think engines as old as that will probably have too high a mileage to really consider in my case.

Thank you both for your help!

[mdill]

Don't forget to remove the TH400 crank bushing if you get a pre-80 360,
and there might be some accessory bolt size differences that are easy to wok though.

[JacobNL]

Wow! So great to see such useful replies posted in such short time

I'll make sure to tell my mechanic when he swaps the engine, mdill. Thanks!

[Lindel]

And welcome to the forum!

[austinaubinoe]

how exactly did you 'blow' your 360? Is there a whole in the block? I feel like with proper maintenance these motors would be impossible to completely destroy. I mean eventually you will start loosing pressure in the cylinders.

Did you run it dry? I.e did your oil pump go and you not notice?