The calculated flow for the curtain area of a 2.14 valve, .100 lift @ 100% c/d(like flowing a straight tube)is right about 100cfm.

Typical c/d at low lifts is 60-80%.

that said, it seems the flow #'s from the facebook pic grab could start at .200" lift...

or bench could need calibration, really no telling without more info..

Here are the full curve comparisons...

Larry Smith's posted #s assuming the lowest #s are .100":

.100" - 120
.200" - 177
.300" - 239
.400" - 282
.500" - 312
.600" - 324

Or, assuming the lowest #s are .200" (which I don't believe to be the situation):

.200" - 120
.300" - 177
.400" - 239
.500" - 282
.600" - 312
.700" - 324


MCH's CNC Stealth program advertised #:

.100" - 75.0
.200" - 156.7
.300" - 219.8
.400" - 266.2
.500" - 298.8
.600" - 314.9
.700" - 320.7


I can't add anything more to this topic, and still question the bench calibration or some other condition that's resulting in unrealistic low-lift #s.

Regardless, carry on with your bad self!

My total guess is...... There's a leak, causing the big low lift numbers.

the only reason to have Stealth heads is for the stock look. if you should ever damage a Stealth head & it requires welding, you might as well throw it in the bin & buy a new one. They're cast from a low grade aluminium that does not respond well to welding. I have repaired a set of Stealths that needed welding but the cost was more than a new head. go figure.

This is what I got out of my Super Stealths on my bench
OOTB
.200 140
.300 202
.400 242
.500 256
.600 267
.700 267
after
.200 157
.300 217
.400 264
.500 290
.600 314
.700 335
.800 345

Which way?

Mine have been on since they came out.They get beat on pretty good.I did change springs,retainers, and keepers because i run a 588 solid cam and 4 speed.My machinist did some clean up and like the look.He was a perfectionist.Happy with them and i needed straight plugs for my dome pistons.Rocky

Ask him on his fb page.

Case in point....... I flowed one of the MCH CNC ported stealths about 5 years ago.....

.100---72
.200--159
.300--220
.400--266
.500--293
.600--309
.700--313

The thing that's almost never mentioned, and would have more of an impact on the higher lift flow, especially as the flow numbers get bigger......is the shape of the radius for the air inlet.
This can result in a 1-3% difference in flow(or more if its a particularly bad one) on the same head, on the same bench.