That's awesome.....I just thought I read once where people had tried this and it didn't work...didn't mean no disrespect.

Part of it might be what determines “doesn’t work”.

The intake in the pic is being run in a car that’s racing in FAST and Supercar...... and what you see is what the owner ended up with while chasing ET/speed.
I did a similar job on one years ago for another competitor in those same racing series...... and he commented that even though it was quicker at the track, the low speed throttle response and snap was def worse.

So, it’s probably not the hot ticket for a mild street/strip 383.

I see....If I'm remembering correctly.....I'm thinking it was tried on a small block six pack intake.

I saw years ago where Rich Ehrenburg (sp?) tried the Vanke-like mod on a BB 6-BBL intake... didn't go well, as I recall. His attempt cut basically the entire divider from each 2-BBL plenum.

Before he did that, I did a less extreme version on my 440 6-BBL intake that picked up a little on the track, without hurting streetability. My approach was to lower the dividers similar to an Edelbrock Performer RPM for a BBM... maybe a little lower. Track improvement was .5+ MPH, not huge.

Good stuff