Ported Cast Iron Small Block Chevy Intake Manifolds

Want to know how to make more horsepower with a Small Block Chevy running a cast iron intake manifold? The answer is simple: Change the intake manifold!!!!

Our Stage 1 Intake Manifolds are ported as much as possible through the plenum area (this is the area under the carburetor) and the port openings. The Stage 1 modifications are performed with a CNC machine, finish ported to a Fel Pro 1204 gasket size and shot blasted to disguise the porting marks. 80% of the internal surface of the Stage 1 intake manifold has been modified. However, the outside of the manifold is not altered. The results: A stock looking intake manifold from the outside with up to a 26 horsepower gain.

Our Fully Modified Intake Manifolds are more extensively ported Stage 1 manifolds. In addition to the CNC machining, porting and plenum area modifications, Fully Modified manifolds are also modified through 4 large access ports. These access ports allow us to modify 100% of the internal surfaces of the intake. The additional modifications result in an additional 10 to 15 horsepower gain over the Stage 1 intake manifolds while maintaining a stock external appearance.

Chevrolet Cast Iron 2 barrel Intake Manifolds
Part #	Description	Price
201S1	Stage 1 Chevy cast iron 2 barrel intake	595.00
201	Fully Modified Chevy 2 Barrel cast iron intake	895.00
108	Carb adapter for Holley 2 barrel	55.00
109	Carb spacer for Rochester 2 barrel	45.00
Chevy Cast Iron Q-Jet 4 barrel Intake Manifolds
401S1	Stage 1 Chevy cast iron Q-Jet intake	595.00
401	Fully Modified Chevy cast iron Q-Jet intake	895.00
101	Carb adapter for Holley 2 barrel	74.50
102	Carb adapter for Rochester or Holley 2 barrel	89.00
104	Carb adapter for Holley 4 barrel carb	89.00
110	Carb spacer for Rochester Q-Jet carb.	55.00

The port openings on our modified intake manifolds are just a touch larger than the stock size. To kept them looking as stock as possible, the port openings are finished in a rough carbide and shot blasted. Keeping the ports small and with a rough finish – not large, smooth and shinny - will fool many

people if the intake is inspected.

Don’t be Stuck with Cast Iron. All our intake manifolds maintain a stock external appearance with the original castings numbers. What this means to you is that from the outside no one will ever know you have a modified intake.

We get the most out of cast iron. We leave no stone unturned in getting more horsepower from cast iron parts.

Our modifications combine to produce an incredible horsepower gain and maintain that vital stock appearance. Compare for yourself with these dyno tests

"If you are running Hobby Stock, Limited Late Model, or Sportsman, you couldn't miss hearing about Brzezinski because he is the prime exponent of having the stock cast iron intakes and heads pull more air than ever before. He has learned all the good part numbers and the ways to make them respond."

-- Alex Walordy, "Cast-Iron Creativity" - Circle Track Magazine.

Intake Manifold FAQ'S

Free Custom Camshaft: Now, with your purchase of a complete set of modified heads and a matching, modified intake manifold, we will supply a custom ground flat tappet camshaft designed specifically for your application. The custom flat tappet camshaft, which normally would cost $185.00, will cost you nothing!

Cylinder Head Design Form: Fill out our online form for a recommendation and pricing on a set of heads and intake manifold built specifically for your application.

Sending your parts to us for modifications?

Brzezinski Racing Products, Inc. The #1 Name in Cast Iron. Contact Us or Call toll free at 866-236-6300