Cylinder Heads / Top End Kits

Maximizing Airflow: Pontiac Cylinder Heads and Top End Kits from Butler Performance

Butler Performance provides a tiered approach, offering everything from professionally prepared original cast iron heads to state-of-the-art CNC-ported aluminum heads and complete, matched Top End Power Packages.

1. Complete Cylinder Heads: CNC Ported and Unported

Butler Performance provides aluminum cylinder heads that address the limitations of factory Pontiac castings—namely weight, casting quality, and port design—while using modern, high-flow designs.

CNC Ported Cylinder Heads

The pinnacle of performance, CNC (Computer Numerical Control) Ported Heads are flow-bench tested and proven to deliver maximum horsepower.

• Precision and Consistency: The CNC machining process ensures that every intake and exhaust runner is exactly the same, optimizing air speed and volume. This eliminates the variation often found in hand-ported heads.

• Flow Rates: Butler's CNC-ported heads are designed to support extreme horsepower levels, with flow rates often capable of supporting engines well over 600 HP. These heads are essential for modern high-RPM, large-displacement Pontiac builds.

Unported Cylinder Heads

For builders looking for a high-quality foundation to port themselves, or for slightly milder street builds, Butler Performance offers Complete Cylinder Heads—Unported.

• Modern Design: These heads still feature modern casting materials and designs but with as-cast ports, providing excellent "out-of-the-box" performance potential.

2. Top End Power Packages

The most straightforward way to guarantee performance is through a Top End Power Package. These packages take the guesswork out of pairing components by supplying a fully matched set of parts proven to work together:

• Complete Matching: A typical package includes Butler's CNC Ported Cylinder Heads paired with a perfectly matched Camshaft & Valvetrain Kit, and a high-performance Intake Manifold.

• Guaranteed Results: These kits are designed to achieve a specific power goal. By matching the cam lift, duration, and lobe separation angle to the head's flow characteristics, Butler maximizes the engine's volumetric efficiency.

• Ease of Installation: Receiving a kit with pre-matched and professionally assembled components reduces the risk of expensive errors and provides a significant head start on the build.

3. Pontiac Cast Iron Heads and Services

Butler Performance respects the heritage of the Pontiac V8 and continues to service original equipment (OE) components:

• Pontiac Cast Iron Cylinder Heads and Services: For those committed to using original cast iron heads for restoration or nostalgia builds, Butler offers specialized services. This includes machining, valve jobs, installing hardened seats for unleaded fuel, and performing basic port and bowl work to improve flow over stock.

• Build Your Own Heads Kits: These kits contain all the necessary hardware to assemble a set of performance heads, including high-quality valves, springs, retainers, and locks, allowing the builder to customize the final assembly.

   

4. Advanced Components and Brands

Butler's inventory features specialized components to complete any cylinder head build:

• All Pontiac/Tiger Cylinder Heads: Stocking specialized performance heads developed specifically for the Pontiac community.

• CNC Porting and Head Services: Offering individual services for customers who send in their own castings.

   

By focusing on superior airflow and component compatibility, the cylinder heads and top end kits from Butler Performance are the ultimate upgrade for delivering peak performance and reliable horsepower from any classic Pontiac V8.