Acid intakes receive porting work to critical areas inside the manifold and are "acid ported" for 2 to 3 days. During the acid procedure, approximately 2 pounds of material is removed from the internal parts of the intake. The manifold retains a totally stock external appearance.
When compared side-by-side to a stock intake, the acid modifications are virtually undetectable. Most engine builders find it difficult to identify one of our acid intakes from a stock manifold. Tested on the same test engine as our ported intakes, the acid intake showed an amazing gain of 8 horsepower at 4,500 rpm, and 13 horsepower at 6,500 rpm.
So, if you are looking for a substantial horsepower improvement and must retain a stock looking manifold due to track inspection, the Acid Ported Intake is the way to go. |
Acid intakes retain the stock casting marks |
“In the original form, the Chevy cast iron intakes were designed to run from idle to 3,000 rpm. However, on a race engine, they never see anything less than 3,500 rpm. This is the reason the stock intakes are so restrictive. As the dyno charts show, the addition of a Brzezinski intake will add 20 to 50 horsepower to your engine from 3,500 to 7,000 rpm. If you are interested in performance below 3,500 rpm, such as for a tow vehicle, keep the intake stock. If winning races is your goal, get a Brzezinski intake manifold.”
— Randy Brzezinski, Brzezinski Racing Products, Inc., Pewaukee, WI |
