Speedmaster Small block porting tips and results Part 1

No one is saying anyone “has to” do anything to their heads.
But some want to have them be better than they come ootb.
This is how they get a feel for what to do, how long it takes, and what you can expect for results for the effort....... or if you’re not inclined to do it yourself.....what you’d get beck from a shop that you had do it for you.

When I do this type of small clean-up job I don’t usually bother testing them ootb.
They get the whole job done, then I test one pair of ports, and iiwii.
I test them ootb when it’s something I haven’t had in the shop before, to see what they flow like, so I can gauge how effective the rework is.

For what I’m assuming “most” people are going to be doing with these heads....... I think the non-cnc version and having the valve job redone, back cut valves, bowls blended..... vs buying the cnc version and running them ootb..... if those are the two options for your $$$....... I think the reworked non-cnc version would make more power on the typical hot street/street-strip build that a lot of these heads will end up on.
I’ll go one step further........ it might be better to buy them bare and have them prepped with the 2.055 intake valves.

“IMO”, the low and mid-lift flow on the ootb cnc head is so low I can’t see how anyone who is looking to take advantage of the potential of that porting and port volume........would not seriously think about having the valve job fixed.
It’s a 25cfm improvement on the intake side right where it counts.

Now..... back to your regularly scheduled PBR thread.....