318 to 360 questions

I gave krazykudya thanks in both threads.
Since the OP titled it "question" I'll jump in with this.
I was just reading yesterday.
Is this saying that 318 and 360 intakes are not always interchangeable?
http://www.allpar.com/mopar/4bbl.html
If so, that is news to me.
I've pulled factory four barrel intakes off of 360s and put them on 318s with no problems.
Some 318 with 318 heads. And an 86 cop 318 which I think has 360 heads.
If what he is saying is that it will work, but not well ......never mind.


"Smog is a concern for some of us, not for others, but there are some things that can be done without too much worry. For starters, we have to remember that the 34/360 have better breathing heads with larger ports AND larger combustion chambers. The amount of shaving to get them down to the 318 size, so as not to lose compression (takes it down to about 7:1 vice 8.5:1). An old favorite, and extremely helpful thing to do is have 1.88 valves from a stock 360 installed. There is a requirement to tulip the intake port to do this, but the small amount of work is well worth the effort and money. This also prevents having to change out the intake manifold to fit. If you do go with the stock 360 heads, you have to stick with a 360 intake, for the 340/360 heads and 318 intake do not match, and vice versa. "