1980-90 258 Exhaust Manifold fitment

[JeeperChris]

I need to know if the 1980-90 exhaust manifolds for the AMC 258 i6 / 4.2l will fit the earlier models. Mine is a '79 and from there down the exhaust manifold has that spot under the carburetor where the intake and exhaust bolt together. Since mine has a header right now there is a flat plate of steel bolted under the carb and some carb linkage bolted to two of those bottom bolts. I would love to be able to use the later model exhaust manifold as it does not bolt to the intake manifold and I can keep things the way they are.

So does anyone know for sure if the later exhaust manifolds are useable on the earlier models?

Thanks

 

[elwood blues]

Simple answer is yes, it "should". Here's a couple of stock pictures I found on the internet of the 2 different types of manifolds. There should be nothing to interfere with the newer model fitting with your older style intake manifold.

 

[JeeperChris]

That's exactly what I thought but I needed to hear it from you guys that have more experience with these things than I do.

Thanks Elwood!

 

[elwood blues]

You're welcome

If you do this, post up some pictures up so we can see how it fits!

 

[JeeperChris]

You're welcome

If you do this, post up some pictures up so we can see how it fits!

Absolutely!

 

[DaveMueller]

They're all compatible. I put the manifolds from an '88 YJ and an '88 Eagle on a '74 AMC 258 i6 / 4.2l .
Other than the block color, you can't tell them apart.

 

[JeeperChris]

They're all compatible. I put the manifolds from an '88 YJ and an '88 Eagle on a '74 AMC 258 i6 / 4.2l .
Other than the block color, you can't tell them apart.

Totally awesome!!! Thank you very much!