SBC Head Casting Numbers (Explained) of 2024

SBC head casting numbers play a crucial role in identifying and understanding Small-Block Chevy (SBC) engines.

They provide valuable information about the cylinder head specifications, manufacturing details, and compatibility with other components.

In this article, we’ll delve into the significance of SBC head-casting numbers and how to decode them.

Importance of Identifying Head Casting Numbers

Identifying head-casting numbers is essential for several reasons:

• Determining cylinder head model and year
• Confirming compatibility with other engine parts
• Understanding cylinder head specifications (e.g., valve size, combustion chamber volume)
• Verifying authenticity for restoration projects and engine upgrades

Understanding SBC Head Casting Number Format

(SBC) head casting numbers typically follow a specific format, including:

• Prefix: Indicates the cylinder head type and may include additional details about the design or application.
• Casting Date Code: Provides information about when the cylinder head was cast, including the month and year.
• Casting Number: A unique identifier for the cylinder head, often used for reference and identification purposes.

SBC Head Casting Numbers

Small Block Chevy (SBC) head casting numbers can vary depending on the specific year and model of the engine. Here are some commonly referenced casting numbers for SBC heads:

Vortec Heads

• 12558062 (Gen I)
• 10239906 (Gen I, cast iron)
• 12558060 (Gen I, aluminum)
• 12529093 (Gen II, L31)

Double Hump Heads

• 3927186 (early 1960s)
• 3782461 (mid-1960s)
• 3927186X (remanufactured)
• 3917291 (fuelie heads)

L98 Corvette Heads

• 14101083 (1987-1991)
• 14101128 (1991-1996)

Bowtie Heads

• 14011034 (cast iron)
• 14011049 (aluminum)
• 14011058 (aluminum, CNC ported)

Dart Heads

• 10021070 (Iron Eagle)
• 10024360 (Iron Eagle Platinum)
• 11020075 (Pro 1, aluminum)
• 11020095 (Pro 1, CNC aluminum)

World Products Heads

• 011150 (Sportsman II, iron)
• 011150-051 (Sportsman II, aluminum)
• 011150-051 (Sportsman II, S/R, aluminum)

How to Locate SBC Head Casting Numbers?

numbers of SBC head casting are usually located in specific areas of the cylinder head, such as:

• Near the valve cover mounting surface
• On the underside of the head near the intake manifold
• Behind the rocker arm studs

Decoding Casting Numbers of SBC Head

Decoding Casting Numbers of SBC heads involves using reference guides or online databases specific to Small-Block Chevy engines.

These resources help interpret the prefix, date code, and casting number to reveal details about the cylinder head’s origin, specifications, and compatibility with other components.

Significance of Head Casting Numbers in SBC Engines

Head casting numbers play a crucial role in verifying cylinder head authenticity, identifying replacement parts, and ensuring compatibility with engine upgrades.

They are essential for maintaining engine originality and performance in SBC-powered vehicles.

Here are some key points highlighting their importance:

Identification

Head casting numbers help identify the specific model and year of the cylinder heads installed on an SBC engine.

Compatibility

Knowing the casting numbers ensures compatibility with other engine parts, such as intake manifolds, valve covers, and rocker arms.

Specifications

Casting numbers provide insight into cylinder head specifications, including valve size, combustion chamber volume, and port design.

Authenticity

Matching casting numbers verifies the authenticity of cylinder heads, which is crucial for restoration projects and maintaining engine originality.

Performance Upgrades

Understanding casting numbers helps in selecting the right cylinder heads for performance upgrades, such as aftermarket heads with improved flow characteristics.

Maintenance

When replacing or upgrading cylinder heads, matching casting numbers ensures proper fitment and functionality within the engine system.

Value

Original and matching casting numbers enhance the value of SBC engines, especially in collector cars and vintage vehicles.

Conclusion

In Conclusion, (SBC) head casting numbers are valuable identifiers that provide insight into Small-Block Chevy engine history, specifications, and compatibility.

Understanding how to decode and interpret these numbers can benefit enthusiasts, mechanics, and collectors in various automotive endeavors.