ProComp/Speedmaster aluminum heads

Why not? :poke: I haven’t read anywhere of issues to warrant any doubts. Nothing negative regarding machining or assembly. I have seen people (one case in point on this forum, which is common: no follow up) posting about these heads stating they checked them for sealing and yet they don’t post what their finding were!! What’s up with that??:wtf:

If there was one head I would trust OOTB it's Trickflow. If I am spending 3k+ for a topend (Valvetrain, etc.) then you bet it's gonna get a once over. I work in Manufacturing and even on our best day things can get out of tolerance. Aftermarket automotive is no different. But I have never been that guy who finds Heads up pennies all day either. It' called .01 percent luck lol...

JW