Ported intake gain?

pittsburghracer said

I probably wouldn’t do one for less than 300.00 anymore but used to charge less because most of the time I was porting their heads too. Here are some prices for the tools needed.
30.00 for the burr I posted above

grinder in picture

foot speed controller or router speed controller in pictures.
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Used all of that, it works.
You're absolutely right about just port matching and blending the flange to runners. Best return in time spent and it's hard to mess that up...well maybe not for some.
The approach is diff by some.
Leaned in or just straight and bull nosed, rough grit finish or just burr smooth.
I bolted a ootb strip dominator onto a j head that flowed 250cfm by itself...and it flowed 217cfm. People get caught up in head flow and never realize the intake needs work..and that they're essentially bolting on a cork that kills power .
The 340 vic ootb when bolted to 273 cfm heads dropped it to 245cfm... after the gasket match and flange/plenum blend ...264-266cfm. I ran an ld340 on my 410...never flowed it on the head..regretted that... but the heads are off and now I'm going to flow it bolted on and see how far off it was.