Speedmaster head hypothetical

Earlie A said

Thanks. Now back to the original question.

Of the two curves and with the specs given, is there enough information to feel confident about which one makes more power or runs better down the track? Or is the answer - there is no way to know?

Click to expand...

The book is Secrets of a 740 HP Winston Cup engine.

Not a lot in there but a couple of important things.

I would have picked the port with the 50 degree seats regardless of what the flow bench said.

I still say that. Unless you totally kill the 50 I say it always makes more power.

It’s about the shape.