Question on port matching

The better the alignment the more power that can be made. An offset of parts will loose power and Efficiency. Now the big thing here is, “How Much?”

This is a number I can not name on any build. But this is also an item that pays a dividend the higher up the power scale you travel. So a lot of this is build dependent. Will a 8-1, 318 suffer a 40hp loss, no, it won’t. Will a .750 solid roller 408 be shorter on power, than if you had port matched it? I’m sure it will be.

Eric W’s youtube showed how he did it. I would suggest a look. The way I go about it is to fit the intake with the gasket being used to the heads on the block being used. I also have a small camera with a flexible neck to lead down dual planes and the tighter turning runners of a single plane. Then I can see how that alignment is and then make a scribe mark later. If your heads are bare, call it a plus to look the other way.

I do not port match every build. I don’t see a need for it on lower power builds or when I booting up stock intakes to stock heads with small cams. I’m pretty happy when the intake runner is smaller than the heads port on most stuff. The other way around is not good IMO.

Its small potato stuff that is OK to do. Small potato stuff added up over a build equals something noticeable.