We did a bunch of dyno testing with Velocity Stacks at Holley and found in most cases the "Velocity Stack did nothing.
We put the same radius on a stove pipe the same height as the velocity stack and got exactly the same hp on several test days
A friend has a Twin Turbo SBF 34 Ford (tall hood line). He came off the Turbos, went upward to a 180 bend, and into the stovepipe (for each turbo)
the 10" stove pipe length really worked well with distributing the air to the Holley carb. Even under boost and a bit higher velocity air.
So if I hear Velocity Stack, I think "GOT YOUR MONEY SUCKER"
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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