Trick Flow small block heads

318willrun said
My last 360, I pulled 300 rpm's out of it because it didn't change the E.T. I went from 6000 down to 5700 rpms and ran the same. I shift the engine at the lowest rpm WITHOUT changing the E.T. Better for everything.

I've done the same thing. Thinking I need to rev it to 68 or higher when 58 would do the same thing...