Gains of porting Twisted Wedge Heads?

[agent007kimball]

I have unported Twisted Wedge Heads. I am curious as to what sort of HP gains I would see if I got it ported for NA use. I am in the northeast and I am wondering who does great work with these heads and is it even worth the money to do it? How much does something like this cost? Thanks

 

[BarnStang]

Check these guys out. They are usually happy to answer your questions.
http://www.totalengineairflow.com/index.htm

 

[bock]

I have ported TFS TW and ported lower gt-40 and non ported gt-40 upper.

My heads flow around 275cfm at .500 of lift, the heads and lower are match to a #1262 felpro intake gasket.Dont no how much HP this engine give me,but i ran 12.70 at 111mph in a full weight 93 LX with ET street.