440 Source Head Opinions?

Stealth heads with the seats recut and a nice bowl blend with flow right about [email protected] lift.

Most home ported stock heads(especially 906’s and 915’s) I’ve tested are typically in the 250 and less range.

The [email protected] is a little more than these flowed:

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View attachment 1715901406

On my bench an ootb TF240 flows right about 316/[email protected], and 320/[email protected] lift.
I’ve tested about a dozen of them, they’ve all been within a few cfm.


I was hoping you would post up the numbers for these guys. I figured you and Brian would have that info.