I don't read anything about speedmaster heads. You asked for and I told ya what I had on my Trickflows.
If you want to take the low road, have a good ride, but not at my expence.
got a set of ported SM on 360 .070 overbored...running old old old MP 590 cam...just think how much faster it would be with a newer camshaft....lol
Ran a best of 10.462 @ 125......so yeah SM heads do work....
