[Tom Vaught]

Send the young man to the HEAD OF THE CLASS!

The HOT ROD GUY has been out there for many years, always assumed (bad technique) that he was a Car Guy and did a lot of his own work.
Maybe in the early days, perhaps. He is a very good writer and has probably written thousands of articles over the years. Maybe he actually does know how to do the calculations like the Racing Junk Writer but was having a "rushed day" and the magazine still had to go to press.

Hard to say, but the 1,025 cfm number is a Bragging Number (advertising for the Magazine) and a lot of people will be confused by a intake package
with a lot of reported cfm that made really low HP numbers on the dyno for that CFM number. Don't have to be a MATH GENIUS but should have some
knowledge of how the tests and parts should be rated in real life.

That is why I say, 20.4" Test pressure is a good number for carb ratings, (based on years of experience by very smart people who knew how the math
worked before, during, and after WW-II. Barry Grant did no one a favor with the "test the carb at 28" of water" BS except to sell over-rated CFM carbs to people.

One last comment on this math deal.
Rule of thumb is you need a 2 "Jet Size" change to see any real difference in performance. Up or down.

So BG used to take the Holley Calibrations (He measured orifices on a carb, I assume) and then changed a given orifice number by 1.
So now the Novice will say "the Calibration is not the same - see the numbers are different." The reality was he copied the Holley calibrations
and put them into his carbs because they were solid calibrations and a 1 number change did nothing different to the performance of the vehicle.
So he was as good as the competition without doing any real Carb Engineering. Years later though he did pay people to try to copy the Ford Inline
Carb made by Autolite (not Holley) and the removable sleeve carbs which were a knock-off of the Weber engineering designs.
So this piece is not a Bash of BG so much as "try to learn a bit of the math on how the carb was tested. Same deal with Cylinder Head Flow."

Good Job Frank.

Tom V.