Dyno #'s with Trickflow Heads
I haven’t seen a set of the TF SB heads in person....... however, if I were putting something together where I was looking to make 500-600hp....... and didn’t feel like having to port some heads to get there...... that’s what I’d use.
On a milder 10:1 340/360(or stroker) hyd cam street motor???
I’d save some $$$ and use something like bowl blended SM’s.