Edelbrock E-Street vs Performer RPM Heads

How much port work do the Edelbrock heads need to match the trick flows OOTB.

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There will likely be a few differing opinions on this, but I’ll preface my response with........
“On my flow bench”.......
(And I have performed hundreds of flow tests on BBM heads)
-I see 320 +/- cfm from an ootb TF240.
I have tested a dozen or so....... all very close to 320cfm.

-the highest flowing Ede style head I have tested was a MCH CNC ported Stealth, which actually had the intake runners 12cc’s larger than the TF240..... 252cc. It’s quite a bit of porting.
The program MCH uses on the Stealth is the same one they use on the Ede heads.
On my bench, that Stealth flowed 315cfm( I tested two cylinders, both flowed 315).

- if you’re going to have to rely on paying someone to get the Ede’s into the 320cfm range......buying the TF’s will end being quite a bit cheaper.
If you’re a skilled head porter and can do the work yourself........ you’ll end up paying yourself minimum wage to end up at “even money” compared to the TF’s.