Black Friday sales. Who’s buying what.

pittsburghracer said
Not impressed at all with those flow numbers. Especially with a 4.250 head adapter.

View attachment 1716171444

View attachment 1716171445

Promaxx beasts them from .100 - .400 and they kinda meet up at .500 at around 250 cfm.

Promaxx advertises 5 angle valve job (are the intake's backcut?) vs PW's 3 angle. I wonder if this is the factor that's killing the mid lift flow?

Either way, I just ordered the ProMaxx 171s, $2446 CDN to the door which is $100 less than the PWs ironically.