Was talking to Dwayne( Porter racing heads) yesterday who has a very “ conservative” bench.
He said the Trick Flow big block stuff flowed really close to what his findings were, along with other heads they produce as well.
Take that for what its worth, but Dwayne is very well known and has flowed lots of heads. Many that dont “ line up” with advertized numbers he has found as well
He also said there stuff can be run out of the box
