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As I understand it, they are not all that much better then an Eddy head.

So as a comparison they are a little better. But heavier, use a special intake/rockers, and cost more (quick look put these in the $1100 bare range).

Not too hard to understand why not too many people run them anymore based on that.

I think more circle track guys run them because some rules force "iron heads" on the teams.




Any time you get rid of the pushrod pinch on a sbm it is gonna run better, regardless of flow #s even. I personally believe a ported w2 is gonna outperform a ported edelbrock very easily.