Question on port matching
A big thanks to
@MOPAROFFICIAL
The man makes more sense in a few posts than a thread of multiple pages.
Unreal. He says a a .020 mismatch is perfect. So you want a number? I already said that. ZERO is what you want. NONE. Get it yet?
If you can line everything up you don’t just make the manifold .020 bigger. You make it one continuous port, with the absolute minimum number of corners, and the correct amount of taper.
God DAMN. It’s not that hard. .020 means nothing.
Now ask me how much taper a port needs. And the answer is it depends. But they all need some taper, without changes in cross section.
.020 is the number you wanted, but it’s STILL wrong. There is no NUMBER. Make it all line up if you can. If you can’t, don’t make the intake smaller.
Better yet, just bolt the manifold on and don’t screw with it, because in the end it will most likely be wrong.
More engines have made less power because someone went on a forum and got bad advice. Don’t port match unless you understand that you can screw it up 100 ways and do it right two ways. The odds aren’t in your favor.