Originally posted by Sensei:
Just some FYI for those interested...
With today's technology, costs and time have been cut down dramatically using what is called "Extrude Hone" http://www.extrudehone.com/
-Sensei
[/B]
I've actually used Extrude Hone before, which is what Ford's SVT division uses. However, Extrude Hone is more well known for being expensive, as well as being the best because everything is computer controlled. Most companies that offer port & polish, also do other things like back-Cut valves, radiused blend seats, three-Angle valve job, and hand-lapped & vacuum-tested valve seats etc. I think Gerry Johnson did some of these other mods when the heads are out, most people do. Extrude Hone is just the port & polish, nothing else. They are the best nonetheless, but are also very expensive considering thats the only thing they do.