If you're really curious you can borrow a head with the same casting number and get a before and after flow but personally the Flow bench is just a tool much like a dyno to see a difference while modding.
Are you Manual or Auto?
Diff ratio?
Intended use for the car?
Stock ECU/Rpm...
Unless you're building a class legal race car Cam selection for a forced induction motor isn't nearly as critical as for an NA.
Just look at how much power people make on stock cams, just about anything you select is going to flow more what you need to do is choose cams that will put the...
8.3mm sticks in my head for some reason on the stock lift..... (might be wrong I'm old)
Flowing a head is usually done as a before and after comparison to see if the modifications in between have given the desired results.
Just flowing a head with no basis for comparison is a bit dumb.
I trim the cover gaskets where they stick up with a sharp scraper then apply the RTV wet then the HG and head.
No real need for high temp RTV there but it won't hurt.
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