[The89Beast]

I have a stock '89 318 LA style and I want to put headers and have my dual exhaust redone. I plan on dropping a 360 Magnum in the next year or so. I am wondering if the LA headers will still work when I do the swap? I do know that I will have to plug the AIR injection ports on the heads. I just don't know what size they are. Any help would be greatly appreciated. Thanks.

 

[Evildriver-3]

what don't you know what size is? the air holes?

 

[RAMMAN4]

Yes, the headers will work. The headers off my LA 318 bolted up to my 360 magnum no problem. The size of the air injection holes is 1/4 inch. Just use a 1/4 inch coarse thread tap and set screws.

 

[chrysler300le]

Magnum engines don't have air injection holes

 

[The89Beast]

The air injection holes on my LA style heads is what I was talking about and whether or not LA style headers will fit on a Magnum engine.

Ramman, What brand of headers are you using?

 

[RAMMAN4]

I think they are dynomax. I bought them at oreillys auto parts about 7 years ago for my old 318 LA. When we swapped to the 360 magnum they bolted right up. I still even use the old LA header gaskets too.

 

[RAMMAN4]

BTW, use 1/4 inch set screws about 1/2 to 3/4 inch long. Don't forget to put some locktite on them too.

 

[mopar96ram]

I put my givsons for a 318 mag on a 360La, everything but the collector linned up fine