Trick Flow small block heads

@gzig5 Yes, larger the bore plate fixture, the better it allows the head to move air raising the numbers. This is why your head guy should be asking you what your bore size will be when you use the head, exactly. While the difference in a 4.00 to a 4.010 will show next t nothing, it could be different. You want exact! Just so you know.

I’ll have to dig up my flow numbers, which I’m not a huge fan of, because there flowed by two different people on two different benches and fixture sizes. I’ll nut shell it and say that the difference in max flow is IIRC, 15 cfm.

I trust my guy more. Even more so because not only did he do as I ask but also used the bore fixture size I intend to use, a 4.03 vs the 4.125 “The Other Guy” did which didn’t make any sense since I told him it would be a 4.030 bore size.